#2557 DMR improved error detection in voice frames and voice events. (#2608)

Co-authored-by: denny <dennis.sheirer@gmail.com>

.github/workflows/gradle.yml

@@ -21,14 +21,14 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - name: Set up JDK 27
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@v6
         with:
           java-version: '27'
           distribution: 'liberica'
           java-package: 'jdk+fx'
+      - name: Set up Gradle
+        uses: gradle/actions/setup-gradle@v6
       - name: Build with Gradle
-        uses: gradle/gradle-build-action@v2
-        with:
-          arguments: clean build
+        run: ./gradlew clean build

.github/workflows/nightly.yml

@@ -13,32 +13,31 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
 
       - name: Set up JDK 27
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@v6
         with:
           # Must match the JDK version downloaded in build.gradle (jdk_download_base) - jlink requires an exact version match
           java-version: '27.0.0'
           distribution: 'liberica'
           java-package: 'jdk+fx'
 
+      - name: Set up Gradle
+        uses: gradle/actions/setup-gradle@v6
+
       - name: Build Linux and Mac releases with Gradle
-        uses: gradle/gradle-build-action@v2
-        with:
-          arguments: runtimeZipOthers -PprojectVersion=nightly
+        run: ./gradlew runtimeZipOthers -PprojectVersion=nightly
 
       - name: Build Windows release with Gradle
-        uses: gradle/gradle-build-action@v2
-        with:
-          arguments: runtimeZipWindows -PprojectVersion=nightly
+        run: ./gradlew runtimeZipWindows -PprojectVersion=nightly
 
       - name: Create Build Info file
         run: |
           echo -e "ref: $GITHUB_REF \ncommit: $GITHUB_SHA\nbuild: $(date +"%Y-%m-%dT%H:%M:%SZ")" > build/image/build_info.txt
 
       - name: Add build artifacts to nightly release
-        uses: softprops/action-gh-release@v2
+        uses: softprops/action-gh-release@v3
         with:
           tag_name: nightly
           prerelease: true

.github/workflows/release.yml

@@ -0,0 +1,130 @@
+# Publishes a release when a version tag is pushed. The tag has to match
+# projectVersion in gradle.properties with a leading 'v': v0.6.2 for a final
+# release, or v0.6.2-beta-1 / v0.6.2-alpha-1 for a pre-release.
+name: Release
+
+on:
+  push:
+    tags: ['v[0-9]+.[0-9]+.[0-9]+*']
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    outputs:
+      version: ${{ steps.version.outputs.version }}
+      previous_tag: ${{ steps.previous.outputs.tag }}
+    steps:
+      - uses: actions/checkout@v7
+        with:
+          # Full history and tags, to find the previous release tag for the release notes
+          fetch-depth: 0
+
+      - id: version
+        run: |
+          expected="v$(sed -n 's/^projectVersion=//p' gradle.properties | tr -d '[:space:]')"
+          if [ "$GITHUB_REF_NAME" != "$expected" ]; then
+            echo "::error::Tag $GITHUB_REF_NAME does not match projectVersion in gradle.properties ($expected)"
+            exit 1
+          fi
+          echo "version=${GITHUB_REF_NAME#v}" >> "$GITHUB_OUTPUT"
+
+      # Release notes list the PRs since the previous version tag (never 'nightly'). A final release
+      # starts from the previous final release, so it covers every alpha and beta in between.
+      - id: previous
+        run: |
+          exclude=(--exclude "$GITHUB_REF_NAME")
+          if [[ "$GITHUB_REF_NAME" != *-* ]]; then
+            exclude+=(--exclude '*-*')
+          fi
+          tag="$(git describe --tags --abbrev=0 --match 'v[0-9]*' "${exclude[@]}" HEAD 2>/dev/null || true)"
+          echo "Release notes start from: ${tag:-(GitHub default)}"
+          echo "tag=$tag" >> "$GITHUB_OUTPUT"
+
+      - name: Set up JDK 27
+        uses: actions/setup-java@v6
+        with:
+          # Must match the JDK version downloaded in build.gradle (jdk_download_base) - jlink requires an exact version match
+          java-version: '27.0.0'
+          distribution: 'liberica'
+          java-package: 'jdk+fx'
+
+      - name: Set up Gradle
+        uses: gradle/actions/setup-gradle@v6
+
+      - name: Build and test
+        run: ./gradlew clean build --console=plain
+
+      # The runtime plugin can't build Windows and the other platforms in the same invocation.
+      - name: Build Linux and Mac releases
+        run: ./gradlew runtimeZipOthers --console=plain
+
+      - name: Build Windows release
+        run: ./gradlew runtimeZipWindows --console=plain
+
+      - name: Check release zips
+        env:
+          VERSION: ${{ steps.version.outputs.version }}
+        run: |
+          missing=0
+          for platform in linux-aarch64 linux-x86_64 osx-aarch64 osx-x86_64 windows-aarch64 windows-x86_64; do
+            zip="build/image/sdr-trunk-${platform}-v${VERSION}.zip"
+            if [ ! -f "$zip" ]; then
+              echo "::error::Missing $zip"
+              missing=1
+            fi
+          done
+          ls -l build/image/*.zip
+          exit $missing
+
+      - uses: actions/upload-artifact@v7
+        with:
+          name: release-zips
+          path: build/image/*.zip
+          if-no-files-found: error
+          retention-days: 7
+
+  publish:
+    needs: build
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/download-artifact@v8
+        with:
+          name: release-zips
+          path: zips
+
+      # Publishing is split into steps that can all be repeated, so a failed
+      # upload or a re-run finishes the draft left behind rather than failing on
+      # it: gh retries uploads, and a retry of an upload that had in fact
+      # succeeded fails with "ReleaseAsset.name already exists" unless clobbering.
+      - name: Create release
+        env:
+          GH_TOKEN: ${{ github.token }}
+          GH_REPO: ${{ github.repository }}
+          VERSION: ${{ needs.build.outputs.version }}
+          PREVIOUS_TAG: ${{ needs.build.outputs.previous_tag }}
+        run: |
+          (cd zips && sha256sum *.zip > SHA256SUMS)
+          prerelease=()
+          if [[ "$GITHUB_REF_NAME" == *-* ]]; then
+            prerelease=(--prerelease)
+          fi
+          notes_start=()
+          if [ -n "$PREVIOUS_TAG" ]; then
+            notes_start=(--notes-start-tag "$PREVIOUS_TAG")
+          fi
+          if gh release view "$GITHUB_REF_NAME" --json isDraft --jq .isDraft 2>/dev/null | grep -qx false; then
+            echo "::error::Release $GITHUB_REF_NAME is already published"
+            exit 1
+          elif gh release view "$GITHUB_REF_NAME" >/dev/null 2>&1; then
+            echo "Reusing the draft release $GITHUB_REF_NAME"
+          else
+            gh release create "$GITHUB_REF_NAME" --draft "${prerelease[@]}" \
+              --verify-tag --generate-notes "${notes_start[@]}" --title "Version $VERSION"
+          fi
+          gh release upload "$GITHUB_REF_NAME" zips/* --clobber
+          gh release edit "$GITHUB_REF_NAME" --draft=false

README.md

@@ -49,3 +49,28 @@ committed to the code base, so it's not really 'nightly' as much as it is 'curre
 * **Operating System:** Windows (~~32 or~~ 64-bit), Linux (~~32 or~~ 64-bit) or Mac (64-bit, 12.x or higher)
 * **CPU:** 4-core
 * **RAM:** 8GB or more (preferred).  Depending on usage, 4GB may be sufficient.
+
+## Creating a Release (Maintainers)
+Releases are built and published automatically by the [Release](.github/workflows/release.yml) GitHub workflow
+whenever a version tag is pushed to the repository.
+
+1. Update `projectVersion` in `gradle.properties` to the new version, following the naming convention described in
+that file (e.g. `0.6.2-alpha-1`, `0.6.2-beta-1` or `0.6.2`).
+2. Commit and push the change to `master`.
+3. Create and push a tag that matches the version with a leading `v`:
+```
+git tag v0.6.2-beta-1
+git push origin v0.6.2-beta-1
+```
+
+The workflow then:
+* Verifies that the tag matches `projectVersion` in `gradle.properties` and fails if it does not.
+* Builds and tests the code, then creates the release zips for Linux, Mac and Windows (x86-64 and aarch64).
+* Creates a GitHub release titled `Version <version>` with auto-generated release notes (a "What's Changed" list of
+the PRs merged since the previous version tag), and attaches the six zip
+files plus a `SHA256SUMS` checksum file.
+* Marks tags containing a dash (alpha and beta versions) as pre-releases. Tags without a dash become full releases.
+
+If the workflow fails part way through, fix the problem and re-run it from the Actions tab. It resumes from the
+draft release left behind. It won't modify a release that has already been published. To rebuild a published
+release, delete the release and the tag on GitHub, then push the tag again.

artifacts/sdrplay-api-headers/v3_07/sdrplay_api.h

@@ -1,229 +0,0 @@
-#ifndef SDRPLAY_API_H
-#define SDRPLAY_API_H
-
-#include "sdrplay_api_dev.h"
-#include "sdrplay_api_rx_channel.h"
-#include "sdrplay_api_callback.h"
-
-//#if defined(_M_X64) || defined(_M_IX86)
-//#include "windows.h"
-//#elif defined (__GNUC__)
-typedef void *HANDLE;
-//#endif
-
-//#ifndef _SDRPLAY_DLL_QUALIFIER
-//#if !defined(STATIC_LIB) && (defined(_M_X64) || defined(_M_IX86))
-//#define _SDRPLAY_DLL_QUALIFIER __declspec(dllimport)
-//#elif defined(STATIC_LIB) || defined(__GNUC__)
-//#define _SDRPLAY_DLL_QUALIFIER
-//#endif
-//#endif  // _SDRPLAY_DLL_QUALIFIER
-
-// Application code should check that it is compiled against the same API version
-// sdrplay_api_ApiVersion() returns the API version 
-#define SDRPLAY_API_VERSION                   (float)(3.07)
-
-// API Constants
-#define SDRPLAY_MAX_DEVICES                   (16)
-#define SDRPLAY_MAX_TUNERS_PER_DEVICE         (2)
-
-#define SDRPLAY_MAX_SER_NO_LEN                (64)
-#define SDRPLAY_MAX_ROOT_NM_LEN               (32)
-
-#define SDRPLAY_RSP1_ID                       (1)
-#define SDRPLAY_RSP1A_ID                      (255)
-#define SDRPLAY_RSP2_ID                       (2)
-#define SDRPLAY_RSPduo_ID                     (3)
-#define SDRPLAY_RSPdx_ID                      (4)
-
-// Enum types
-typedef enum
-{
-    sdrplay_api_Success               = 0,
-    sdrplay_api_Fail                  = 1,
-    sdrplay_api_InvalidParam          = 2,
-    sdrplay_api_OutOfRange            = 3,
-    sdrplay_api_GainUpdateError       = 4,
-    sdrplay_api_RfUpdateError         = 5,
-    sdrplay_api_FsUpdateError         = 6,
-    sdrplay_api_HwError               = 7,
-    sdrplay_api_AliasingError         = 8,
-    sdrplay_api_AlreadyInitialised    = 9,
-    sdrplay_api_NotInitialised        = 10,
-    sdrplay_api_NotEnabled            = 11,
-    sdrplay_api_HwVerError            = 12,
-    sdrplay_api_OutOfMemError         = 13,
-    sdrplay_api_ServiceNotResponding  = 14,
-    sdrplay_api_StartPending          = 15,
-    sdrplay_api_StopPending           = 16,
-    sdrplay_api_InvalidMode           = 17,
-    sdrplay_api_FailedVerification1   = 18,
-    sdrplay_api_FailedVerification2   = 19,
-    sdrplay_api_FailedVerification3   = 20,
-    sdrplay_api_FailedVerification4   = 21,
-    sdrplay_api_FailedVerification5   = 22,
-    sdrplay_api_FailedVerification6   = 23,
-    sdrplay_api_InvalidServiceVersion = 24
-} sdrplay_api_ErrT;
-
-typedef enum
-{
-    sdrplay_api_Update_None                        = 0x00000000,
-
-    // Reasons for master only mode 
-    sdrplay_api_Update_Dev_Fs                      = 0x00000001,
-    sdrplay_api_Update_Dev_Ppm                     = 0x00000002,
-    sdrplay_api_Update_Dev_SyncUpdate              = 0x00000004,
-    sdrplay_api_Update_Dev_ResetFlags              = 0x00000008,
-
-    sdrplay_api_Update_Rsp1a_BiasTControl          = 0x00000010,
-    sdrplay_api_Update_Rsp1a_RfNotchControl        = 0x00000020,
-    sdrplay_api_Update_Rsp1a_RfDabNotchControl     = 0x00000040,
-
-    sdrplay_api_Update_Rsp2_BiasTControl           = 0x00000080,
-    sdrplay_api_Update_Rsp2_AmPortSelect           = 0x00000100,
-    sdrplay_api_Update_Rsp2_AntennaControl         = 0x00000200,
-    sdrplay_api_Update_Rsp2_RfNotchControl         = 0x00000400,
-    sdrplay_api_Update_Rsp2_ExtRefControl          = 0x00000800,
-
-    sdrplay_api_Update_RspDuo_ExtRefControl        = 0x00001000,
-
-    sdrplay_api_Update_Master_Spare_1              = 0x00002000,
-    sdrplay_api_Update_Master_Spare_2              = 0x00004000,
-
-    // Reasons for master and slave mode
-    // Note: sdrplay_api_Update_Tuner_Gr MUST be the first value defined in this section!
-    sdrplay_api_Update_Tuner_Gr                    = 0x00008000,
-    sdrplay_api_Update_Tuner_GrLimits              = 0x00010000,
-    sdrplay_api_Update_Tuner_Frf                   = 0x00020000,
-    sdrplay_api_Update_Tuner_BwType                = 0x00040000,
-    sdrplay_api_Update_Tuner_IfType                = 0x00080000,
-    sdrplay_api_Update_Tuner_DcOffset              = 0x00100000,
-    sdrplay_api_Update_Tuner_LoMode                = 0x00200000,
-
-    sdrplay_api_Update_Ctrl_DCoffsetIQimbalance    = 0x00400000,
-    sdrplay_api_Update_Ctrl_Decimation             = 0x00800000,
-    sdrplay_api_Update_Ctrl_Agc                    = 0x01000000,
-    sdrplay_api_Update_Ctrl_AdsbMode               = 0x02000000,
-    sdrplay_api_Update_Ctrl_OverloadMsgAck         = 0x04000000,
-
-    sdrplay_api_Update_RspDuo_BiasTControl         = 0x08000000,
-    sdrplay_api_Update_RspDuo_AmPortSelect         = 0x10000000,
-    sdrplay_api_Update_RspDuo_Tuner1AmNotchControl = 0x20000000,
-    sdrplay_api_Update_RspDuo_RfNotchControl       = 0x40000000,
-    sdrplay_api_Update_RspDuo_RfDabNotchControl    = 0x80000000,
-} sdrplay_api_ReasonForUpdateT;
-
-typedef enum
-{
-    sdrplay_api_Update_Ext1_None                   = 0x00000000,
-
-    // Reasons for master only mode 
-    sdrplay_api_Update_RspDx_HdrEnable             = 0x00000001,
-    sdrplay_api_Update_RspDx_BiasTControl          = 0x00000002,
-    sdrplay_api_Update_RspDx_AntennaControl        = 0x00000004,
-    sdrplay_api_Update_RspDx_RfNotchControl        = 0x00000008,
-    sdrplay_api_Update_RspDx_RfDabNotchControl     = 0x00000010,
-    sdrplay_api_Update_RspDx_HdrBw                 = 0x00000020,
-
-    // Reasons for master and slave mode
-} sdrplay_api_ReasonForUpdateExtension1T;
-
-typedef enum
-{
-    sdrplay_api_DbgLvl_Disable       = 0,
-    sdrplay_api_DbgLvl_Verbose       = 1,
-    sdrplay_api_DbgLvl_Warning       = 2,
-    sdrplay_api_DbgLvl_Error         = 3,
-    sdrplay_api_DbgLvl_Message       = 4,
-} sdrplay_api_DbgLvl_t;
-
-// Device structure 
-typedef struct 
-{
-    char SerNo[SDRPLAY_MAX_SER_NO_LEN];
-    unsigned char hwVer;
-    sdrplay_api_TunerSelectT tuner;
-    sdrplay_api_RspDuoModeT rspDuoMode;
-    double rspDuoSampleFreq;
-    HANDLE dev;
-} sdrplay_api_DeviceT;
-
-// Device parameter structure
-typedef struct 
-{
-    sdrplay_api_DevParamsT       *devParams;
-    sdrplay_api_RxChannelParamsT *rxChannelA;
-    sdrplay_api_RxChannelParamsT *rxChannelB;
-} sdrplay_api_DeviceParamsT;
-
-// Extended error message structure
-typedef struct 
-{
-    char file[256];
-    char function[256];
-    int  line;
-    char message[1024];
-} sdrplay_api_ErrorInfoT;
-
-// Comman API function types
-typedef sdrplay_api_ErrT        (*sdrplay_api_Open_t)(void);    
-typedef sdrplay_api_ErrT        (*sdrplay_api_Close_t)(void);    
-typedef sdrplay_api_ErrT        (*sdrplay_api_ApiVersion_t)(float *apiVer);    
-typedef sdrplay_api_ErrT        (*sdrplay_api_LockDeviceApi_t)(void);    
-typedef sdrplay_api_ErrT        (*sdrplay_api_UnlockDeviceApi_t)(void);    
-typedef sdrplay_api_ErrT        (*sdrplay_api_GetDevices_t)(sdrplay_api_DeviceT *devices, unsigned int *numDevs, unsigned int maxDevs);    
-typedef sdrplay_api_ErrT        (*sdrplay_api_SelectDevice_t)(sdrplay_api_DeviceT *device);    
-typedef sdrplay_api_ErrT        (*sdrplay_api_ReleaseDevice_t)(sdrplay_api_DeviceT *device);    
-typedef const char*             (*sdrplay_api_GetErrorString_t)(sdrplay_api_ErrT err);
-typedef sdrplay_api_ErrorInfoT* (*sdrplay_api_GetLastError_t)(sdrplay_api_DeviceT *device);
-typedef sdrplay_api_ErrT        (*sdrplay_api_DisableHeartbeat_t)(void);
-
-// Device API function types
-typedef sdrplay_api_ErrT        (*sdrplay_api_DebugEnable_t)(HANDLE dev, sdrplay_api_DbgLvl_t dbgLvl); 
-typedef sdrplay_api_ErrT        (*sdrplay_api_GetDeviceParams_t)(HANDLE dev, sdrplay_api_DeviceParamsT **deviceParams); 
-typedef sdrplay_api_ErrT        (*sdrplay_api_Init_t)(HANDLE dev, sdrplay_api_CallbackFnsT *callbackFns, void *cbContext); 
-typedef sdrplay_api_ErrT        (*sdrplay_api_Uninit_t)(HANDLE dev);
-typedef sdrplay_api_ErrT        (*sdrplay_api_Update_t)(HANDLE dev, sdrplay_api_TunerSelectT tuner, sdrplay_api_ReasonForUpdateT reasonForUpdate, sdrplay_api_ReasonForUpdateExtension1T reasonForUpdateExt1);
-typedef sdrplay_api_ErrT        (*sdrplay_api_SwapRspDuoActiveTuner_t)(HANDLE dev, sdrplay_api_TunerSelectT *tuner, sdrplay_api_RspDuo_AmPortSelectT tuner1AmPortSel);
-typedef sdrplay_api_ErrT        (*sdrplay_api_SwapRspDuoDualTunerModeSampleRate_t)(double *currentSampleRate);
-typedef sdrplay_api_ErrT        (*sdrplay_api_SwapRspDuoMode_t)(sdrplay_api_DeviceT *currDevice, sdrplay_api_DeviceParamsT **deviceParams,
-                                                                sdrplay_api_RspDuoModeT rspDuoMode, double sampleRate, sdrplay_api_TunerSelectT tuner,
-                                                                sdrplay_api_Bw_MHzT bwType, sdrplay_api_If_kHzT ifType, sdrplay_api_RspDuo_AmPortSelectT tuner1AmPortSel);
-
-// API function definitions
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-
-    // Comman API function definitions
-    sdrplay_api_ErrT        sdrplay_api_Open(void);
-    sdrplay_api_ErrT        sdrplay_api_Close(void);
-    sdrplay_api_ErrT        sdrplay_api_ApiVersion(float *apiVer);
-    sdrplay_api_ErrT        sdrplay_api_LockDeviceApi(void);
-    sdrplay_api_ErrT        sdrplay_api_UnlockDeviceApi(void);
-    sdrplay_api_ErrT        sdrplay_api_GetDevices(sdrplay_api_DeviceT *devices, unsigned int *numDevs, unsigned int maxDevs);
-    sdrplay_api_ErrT        sdrplay_api_SelectDevice(sdrplay_api_DeviceT *device);
-    sdrplay_api_ErrT        sdrplay_api_ReleaseDevice(sdrplay_api_DeviceT *device);
-    const char*             sdrplay_api_GetErrorString(sdrplay_api_ErrT err);
-    sdrplay_api_ErrorInfoT* sdrplay_api_GetLastError(sdrplay_api_DeviceT *device);
-    sdrplay_api_ErrT        sdrplay_api_DisableHeartbeat(void); // Must be called before sdrplay_api_SelectDevice()
-
-    // Device API function definitions
-    sdrplay_api_ErrT        sdrplay_api_DebugEnable(HANDLE dev, sdrplay_api_DbgLvl_t enable);
-    sdrplay_api_ErrT        sdrplay_api_GetDeviceParams(HANDLE dev, sdrplay_api_DeviceParamsT **deviceParams);
-    sdrplay_api_ErrT        sdrplay_api_Init(HANDLE dev, sdrplay_api_CallbackFnsT *callbackFns, void *cbContext);
-    sdrplay_api_ErrT        sdrplay_api_Uninit(HANDLE dev);
-    sdrplay_api_ErrT        sdrplay_api_Update(HANDLE dev, sdrplay_api_TunerSelectT tuner, sdrplay_api_ReasonForUpdateT reasonForUpdate, sdrplay_api_ReasonForUpdateExtension1T reasonForUpdateExt1);
-    sdrplay_api_ErrT        sdrplay_api_SwapRspDuoActiveTuner(HANDLE dev, sdrplay_api_TunerSelectT *currentTuner, sdrplay_api_RspDuo_AmPortSelectT tuner1AmPortSel);
-    sdrplay_api_ErrT        sdrplay_api_SwapRspDuoDualTunerModeSampleRate(HANDLE dev, double *currentSampleRate);
-    sdrplay_api_ErrT        sdrplay_api_SwapRspDuoMode(sdrplay_api_DeviceT *currDevice, sdrplay_api_DeviceParamsT **deviceParams,
-                                                                              sdrplay_api_RspDuoModeT rspDuoMode, double sampleRate, sdrplay_api_TunerSelectT tuner,
-                                                                              sdrplay_api_Bw_MHzT bwType, sdrplay_api_If_kHzT ifType, sdrplay_api_RspDuo_AmPortSelectT tuner1AmPortSel);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif //SDRPLAY_API_H

artifacts/sdrplay-api-headers/v3_07/sdrplay_api_callback.h

@@ -1,78 +0,0 @@
-#ifndef SDRPLAY_API_CALLBACK_H
-#define SDRPLAY_API_CALLBACK_H
-
-// Event callback enums
-typedef enum
-{
-    sdrplay_api_Overload_Detected     = 0,
-    sdrplay_api_Overload_Corrected    = 1,
-} sdrplay_api_PowerOverloadCbEventIdT;
-
-typedef enum
-{
-    sdrplay_api_MasterInitialised      = 0,
-    sdrplay_api_SlaveAttached          = 1,
-    sdrplay_api_SlaveDetached          = 2,
-    sdrplay_api_SlaveInitialised       = 3,
-    sdrplay_api_SlaveUninitialised     = 4,
-    sdrplay_api_MasterDllDisappeared   = 5,
-    sdrplay_api_SlaveDllDisappeared    = 6,
-} sdrplay_api_RspDuoModeCbEventIdT;
-
-typedef enum
-{
-    sdrplay_api_GainChange            = 0,
-    sdrplay_api_PowerOverloadChange   = 1,
-    sdrplay_api_DeviceRemoved         = 2,
-    sdrplay_api_RspDuoModeChange      = 3,
-} sdrplay_api_EventT;
-
-// Event callback parameter structs
-typedef struct 
-{
-    unsigned int gRdB;
-    unsigned int lnaGRdB;
-    double currGain;
-} sdrplay_api_GainCbParamT;
-
-typedef struct 
-{
-    sdrplay_api_PowerOverloadCbEventIdT powerOverloadChangeType;
-} sdrplay_api_PowerOverloadCbParamT;
-
-typedef struct 
-{
-    sdrplay_api_RspDuoModeCbEventIdT modeChangeType;
-} sdrplay_api_RspDuoModeCbParamT;
-
-// Event parameters overlay
-typedef union
-{
-    sdrplay_api_GainCbParamT          gainParams;
-    sdrplay_api_PowerOverloadCbParamT powerOverloadParams;
-    sdrplay_api_RspDuoModeCbParamT    rspDuoModeParams;
-} sdrplay_api_EventParamsT;
-
-// Stream callback parameter structs
-typedef struct 
-{
-    unsigned int firstSampleNum;
-    int grChanged;
-    int rfChanged;
-    int fsChanged;
-    unsigned int numSamples;
-} sdrplay_api_StreamCbParamsT;
-
-// Callback function prototypes
-typedef void (*sdrplay_api_StreamCallback_t)(short *xi, short *xq, sdrplay_api_StreamCbParamsT *params, unsigned int numSamples, unsigned int reset, void *cbContext); 
-typedef void (*sdrplay_api_EventCallback_t)(sdrplay_api_EventT eventId, sdrplay_api_TunerSelectT tuner, sdrplay_api_EventParamsT *params, void *cbContext); 
-
-// Callback function struct
-typedef struct 
-{
-    sdrplay_api_StreamCallback_t StreamACbFn;
-    sdrplay_api_StreamCallback_t StreamBCbFn;
-    sdrplay_api_EventCallback_t  EventCbFn;
-} sdrplay_api_CallbackFnsT;
-
-#endif //SDRPLAY_API_CALLBACK_H

artifacts/sdrplay-api-headers/v3_07/sdrplay_api_control.h

@@ -1,55 +0,0 @@
-#ifndef SDRPLAY_API_CONTROL_H
-#define SDRPLAY_API_CONTROL_H
-
-// Control parameter enums
-typedef enum
-{
-    sdrplay_api_AGC_DISABLE  = 0,
-    sdrplay_api_AGC_100HZ    = 1,
-    sdrplay_api_AGC_50HZ     = 2,
-    sdrplay_api_AGC_5HZ      = 3,
-    sdrplay_api_AGC_CTRL_EN  = 4
-} sdrplay_api_AgcControlT;
-
-typedef enum
-{
-    sdrplay_api_ADSB_DECIMATION                  = 0,
-    sdrplay_api_ADSB_NO_DECIMATION_LOWPASS       = 1,
-    sdrplay_api_ADSB_NO_DECIMATION_BANDPASS_2MHZ = 2,
-    sdrplay_api_ADSB_NO_DECIMATION_BANDPASS_3MHZ = 3
-} sdrplay_api_AdsbModeT;
-
-// Control parameter structs
-typedef struct 
-{
-    unsigned char DCenable;          // default: 1
-    unsigned char IQenable;          // default: 1
-} sdrplay_api_DcOffsetT;
-
-typedef struct 
-{
-    unsigned char enable;            // default: 0
-    unsigned char decimationFactor;  // default: 1
-    unsigned char wideBandSignal;    // default: 0
-} sdrplay_api_DecimationT;
-
-typedef struct 
-{
-    sdrplay_api_AgcControlT enable;    // default: sdrplay_api_AGC_50HZ
-    int setPoint_dBfs;                 // default: -60
-    unsigned short attack_ms;          // default: 0
-    unsigned short decay_ms;           // default: 0
-    unsigned short decay_delay_ms;     // default: 0
-    unsigned short decay_threshold_dB; // default: 0
-    int syncUpdate;                    // default: 0
-} sdrplay_api_AgcT;
-
-typedef struct 
-{
-    sdrplay_api_DcOffsetT dcOffset;
-    sdrplay_api_DecimationT decimation;
-    sdrplay_api_AgcT agc;
-    sdrplay_api_AdsbModeT adsbMode;  //default: sdrplay_api_ADSB_DECIMATION
-} sdrplay_api_ControlParamsT;
-
-#endif //SDRPLAY_API_CONTROL_H

artifacts/sdrplay-api-headers/v3_07/sdrplay_api_dev.h

@@ -1,51 +0,0 @@
-#ifndef SDRPLAY_API_DEV_H
-#define SDRPLAY_API_DEV_H
-
-#include "sdrplay_api_rsp1a.h"
-#include "sdrplay_api_rsp2.h"
-#include "sdrplay_api_rspDuo.h"
-#include "sdrplay_api_rspDx.h"
-
-// Dev parameter enums
-typedef enum
-{
-    sdrplay_api_ISOCH = 0,
-    sdrplay_api_BULK  = 1
-} sdrplay_api_TransferModeT;
-
-// Dev parameter structs
-typedef struct 
-{
-    double fsHz;                        // default: 2000000.0
-    unsigned char syncUpdate;           // default: 0
-    unsigned char reCal;                // default: 0
-} sdrplay_api_FsFreqT;
-
-typedef struct 
-{
-    unsigned int sampleNum;             // default: 0
-    unsigned int period;                // default: 0
-} sdrplay_api_SyncUpdateT;
-
-typedef struct 
-{
-    unsigned char resetGainUpdate;      // default: 0
-    unsigned char resetRfUpdate;        // default: 0
-    unsigned char resetFsUpdate;        // default: 0
-} sdrplay_api_ResetFlagsT;   
-
-typedef struct 
-{
-    double ppm;                         // default: 0.0
-    sdrplay_api_FsFreqT fsFreq;
-    sdrplay_api_SyncUpdateT syncUpdate; 
-    sdrplay_api_ResetFlagsT resetFlags; 
-    sdrplay_api_TransferModeT mode;     // default: sdrplay_api_ISOCH
-    unsigned int samplesPerPkt;         // default: 0 (output param)
-    sdrplay_api_Rsp1aParamsT rsp1aParams;
-    sdrplay_api_Rsp2ParamsT rsp2Params;
-    sdrplay_api_RspDuoParamsT rspDuoParams;
-    sdrplay_api_RspDxParamsT rspDxParams;
-} sdrplay_api_DevParamsT;
-
-#endif //SDRPLAY_API_DEV_H

artifacts/sdrplay-api-headers/v3_07/sdrplay_api_rsp1a.h

@@ -1,22 +0,0 @@
-#ifndef SDRPLAY_API_RSP1A_H
-#define SDRPLAY_API_RSP1A_H
-
-#define RSPIA_NUM_LNA_STATES         10
-#define RSPIA_NUM_LNA_STATES_AM      7
-#define RSPIA_NUM_LNA_STATES_LBAND   9
-
-// RSP1A parameter enums
-
-// RSP1A parameter structs
-typedef struct 
-{
-    unsigned char rfNotchEnable;                              // default: 0
-    unsigned char rfDabNotchEnable;                           // default: 0
-} sdrplay_api_Rsp1aParamsT;
-
-typedef struct 
-{
-    unsigned char biasTEnable;                   // default: 0
-} sdrplay_api_Rsp1aTunerParamsT;
-
-#endif //SDRPLAY_API_RSP1A_H

artifacts/sdrplay-api-headers/v3_07/sdrplay_api_rsp2.h

@@ -1,35 +0,0 @@
-#ifndef SDRPLAY_API_RSP2_H
-#define SDRPLAY_API_RSP2_H
-
-#define RSPII_NUM_LNA_STATES         9
-#define RSPII_NUM_LNA_STATES_AMPORT  5
-#define RSPII_NUM_LNA_STATES_420MHZ  6
-
-// RSP2 parameter enums
-typedef enum
-{
-    sdrplay_api_Rsp2_ANTENNA_A = 5,
-    sdrplay_api_Rsp2_ANTENNA_B = 6,
-} sdrplay_api_Rsp2_AntennaSelectT;
-
-typedef enum
-{
-    sdrplay_api_Rsp2_AMPORT_1 = 1,
-    sdrplay_api_Rsp2_AMPORT_2 = 0,
-} sdrplay_api_Rsp2_AmPortSelectT;
-
-// RSP2 parameter structs
-typedef struct 
-{
-    unsigned char extRefOutputEn;                // default: 0
-} sdrplay_api_Rsp2ParamsT;
-
-typedef struct 
-{
-    unsigned char biasTEnable;                   // default: 0
-    sdrplay_api_Rsp2_AmPortSelectT amPortSel;    // default: sdrplay_api_Rsp2_AMPORT_2
-    sdrplay_api_Rsp2_AntennaSelectT antennaSel;  // default: sdrplay_api_Rsp2_ANTENNA_A
-    unsigned char rfNotchEnable;                 // default: 0
-} sdrplay_api_Rsp2TunerParamsT;
-
-#endif //SDRPLAY_API_RSP2_H

artifacts/sdrplay-api-headers/v3_07/sdrplay_api_rspDuo.h

@@ -1,40 +0,0 @@
-#ifndef SDRPLAY_API_RSPduo_H
-#define SDRPLAY_API_RSPduo_H
-
-#define RSPDUO_NUM_LNA_STATES         10
-#define RSPDUO_NUM_LNA_STATES_AMPORT  5
-#define RSPDUO_NUM_LNA_STATES_AM      7
-#define RSPDUO_NUM_LNA_STATES_LBAND   9
-
-// RSPduo parameter enums
-typedef enum
-{
-    sdrplay_api_RspDuoMode_Unknown      = 0,
-    sdrplay_api_RspDuoMode_Single_Tuner = 1,
-    sdrplay_api_RspDuoMode_Dual_Tuner   = 2,
-    sdrplay_api_RspDuoMode_Master       = 4,
-    sdrplay_api_RspDuoMode_Slave        = 8,
-} sdrplay_api_RspDuoModeT;
-
-typedef enum
-{
-    sdrplay_api_RspDuo_AMPORT_1 = 1,
-    sdrplay_api_RspDuo_AMPORT_2 = 0,
-} sdrplay_api_RspDuo_AmPortSelectT;
-
-// RSPduo parameter structs
-typedef struct 
-{
-    int extRefOutputEn;                             // default: 0
-} sdrplay_api_RspDuoParamsT;
-
-typedef struct 
-{
-    unsigned char biasTEnable;                      // default: 0
-    sdrplay_api_RspDuo_AmPortSelectT tuner1AmPortSel; // default: sdrplay_api_RspDuo_AMPORT_2
-    unsigned char tuner1AmNotchEnable;              // default: 0
-    unsigned char rfNotchEnable;                    // default: 0
-    unsigned char rfDabNotchEnable;                 // default: 0
-} sdrplay_api_RspDuoTunerParamsT;
-
-#endif //SDRPLAY_API_RSPduo_H

artifacts/sdrplay-api-headers/v3_07/sdrplay_api_rspDx.h

@@ -1,45 +0,0 @@
-#ifndef SDRPLAY_API_RSPDX_H
-#define SDRPLAY_API_RSPDX_H
-
-#include "sdrplay_api_tuner.h"
-
-#define RSPDX_NUM_LNA_STATES               28   // Number of LNA states in all bands (except where defined differently below)
-#define RSPDX_NUM_LNA_STATES_AMPORT2_0_12  19   // Number of LNA states when using AM Port 2 between 0 and 12MHz
-#define RSPDX_NUM_LNA_STATES_AMPORT2_12_60 20   // Number of LNA states when using AM Port 2 between 12 and 60MHz
-#define RSPDX_NUM_LNA_STATES_VHF_BAND3     27   // Number of LNA states in VHF and Band3
-#define RSPDX_NUM_LNA_STATES_420MHZ        21   // Number of LNA states in 420MHz band
-#define RSPDX_NUM_LNA_STATES_LBAND         19   // Number of LNA states in L-band
-#define RSPDX_NUM_LNA_STATES_DX            26   // Number of LNA states in DX path
-
-// RSPdx parameter enums
-typedef enum
-{
-    sdrplay_api_RspDx_ANTENNA_A = 0,
-    sdrplay_api_RspDx_ANTENNA_B = 1,
-    sdrplay_api_RspDx_ANTENNA_C = 2,
-} sdrplay_api_RspDx_AntennaSelectT;
-
-typedef enum
-{
-    sdrplay_api_RspDx_HDRMODE_BW_0_200  = 0,
-    sdrplay_api_RspDx_HDRMODE_BW_0_500  = 1,
-    sdrplay_api_RspDx_HDRMODE_BW_1_200  = 2,
-    sdrplay_api_RspDx_HDRMODE_BW_1_700  = 3,
-} sdrplay_api_RspDx_HdrModeBwT;
-
-// RSPdx parameter structs
-typedef struct 
-{
-    unsigned char hdrEnable;                            // default: 0
-    unsigned char biasTEnable;                          // default: 0
-    sdrplay_api_RspDx_AntennaSelectT antennaSel;        // default: sdrplay_api_RspDx_ANTENNA_A
-    unsigned char rfNotchEnable;                        // default: 0
-    unsigned char rfDabNotchEnable;                     // default: 0
-} sdrplay_api_RspDxParamsT;
-
-typedef struct 
-{
-    sdrplay_api_RspDx_HdrModeBwT hdrBw;                 // default: sdrplay_api_RspDx_HDRMODE_BW_1_700
-} sdrplay_api_RspDxTunerParamsT;
-
-#endif //SDRPLAY_API_RSPDX_H

artifacts/sdrplay-api-headers/v3_07/sdrplay_api_rx_channel.h

@@ -1,21 +0,0 @@
-#ifndef SDRPLAY_API_RX_CHANNEL_H
-#define SDRPLAY_API_RX_CHANNEL_H
-
-#include "sdrplay_api_tuner.h"
-#include "sdrplay_api_control.h"
-#include "sdrplay_api_rsp1a.h"
-#include "sdrplay_api_rsp2.h"
-#include "sdrplay_api_rspDuo.h"
-#include "sdrplay_api_rspDx.h"
-
-typedef struct 
-{
-    sdrplay_api_TunerParamsT        tunerParams;    
-    sdrplay_api_ControlParamsT      ctrlParams;     
-    sdrplay_api_Rsp1aTunerParamsT   rsp1aTunerParams; 
-    sdrplay_api_Rsp2TunerParamsT    rsp2TunerParams; 
-    sdrplay_api_RspDuoTunerParamsT  rspDuoTunerParams;    
-    sdrplay_api_RspDxTunerParamsT   rspDxTunerParams;    
-} sdrplay_api_RxChannelParamsT;
-
-#endif //SDRPLAY_API_RX_CHANNEL_H

artifacts/sdrplay-api-headers/v3_07/sdrplay_api_tuner.h

@@ -1,93 +0,0 @@
-#ifndef SDRPLAY_API_TUNER_H
-#define SDRPLAY_API_TUNER_H
-
-#define MAX_BB_GR                         (59)
-
-// Tuner parameter enums
-typedef enum
-{
-    sdrplay_api_BW_Undefined = 0,
-    sdrplay_api_BW_0_200     = 200,
-    sdrplay_api_BW_0_300     = 300,
-    sdrplay_api_BW_0_600     = 600,
-    sdrplay_api_BW_1_536     = 1536,
-    sdrplay_api_BW_5_000     = 5000,
-    sdrplay_api_BW_6_000     = 6000,
-    sdrplay_api_BW_7_000     = 7000,
-    sdrplay_api_BW_8_000     = 8000
-} sdrplay_api_Bw_MHzT;
-
-typedef enum
-{
-    sdrplay_api_IF_Undefined = -1,
-    sdrplay_api_IF_Zero      = 0,
-    sdrplay_api_IF_0_450     = 450,
-    sdrplay_api_IF_1_620     = 1620,
-    sdrplay_api_IF_2_048     = 2048
-} sdrplay_api_If_kHzT;
-
-typedef enum
-{
-    sdrplay_api_LO_Undefined = 0,
-    sdrplay_api_LO_Auto      = 1,
-    sdrplay_api_LO_120MHz    = 2,
-    sdrplay_api_LO_144MHz    = 3,
-    sdrplay_api_LO_168MHz    = 4
-} sdrplay_api_LoModeT;
-
-typedef enum
-{
-    sdrplay_api_EXTENDED_MIN_GR = 0,
-    sdrplay_api_NORMAL_MIN_GR   = 20
-} sdrplay_api_MinGainReductionT;
-
-typedef enum
-{
-    sdrplay_api_Tuner_Neither  = 0,
-    sdrplay_api_Tuner_A        = 1,
-    sdrplay_api_Tuner_B        = 2,
-    sdrplay_api_Tuner_Both     = 3,
-} sdrplay_api_TunerSelectT;
-
-// Tuner parameter structs
-typedef struct
-{
-    float curr;
-    float max;
-    float min;
-} sdrplay_api_GainValuesT;
-
-typedef struct 
-{
-    int gRdB;                            // default: 50
-    unsigned char LNAstate;              // default: 0
-    unsigned char syncUpdate;            // default: 0
-    sdrplay_api_MinGainReductionT minGr; // default: sdrplay_api_NORMAL_MIN_GR
-    sdrplay_api_GainValuesT gainVals;    // output parameter
-} sdrplay_api_GainT;
-
-typedef struct 
-{
-    double rfHz;                         // default: 200000000.0
-    unsigned char syncUpdate;            // default: 0
-} sdrplay_api_RfFreqT;
-
-typedef struct 
-{
-    unsigned char dcCal;                 // default: 3 (Periodic mode)
-    unsigned char speedUp;               // default: 0 (No speedup)
-    int trackTime;                       // default: 1    (=> time in uSec = (72 * 3 * trackTime) / 24e6       = 9uSec)
-    int refreshRateTime;                 // default: 2048 (=> time in uSec = (72 * 3 * refreshRateTime) / 24e6 = 18432uSec)
-} sdrplay_api_DcOffsetTunerT;
-
-typedef struct 
-{
-    sdrplay_api_Bw_MHzT bwType;          // default: sdrplay_api_BW_0_200
-    sdrplay_api_If_kHzT ifType;          // default: sdrplay_api_IF_Zero
-    sdrplay_api_LoModeT loMode;          // default: sdrplay_api_LO_Auto
-    sdrplay_api_GainT gain;
-    sdrplay_api_RfFreqT rfFreq;
-    sdrplay_api_DcOffsetTunerT dcOffsetTuner;
-} sdrplay_api_TunerParamsT;
-
-#endif //SDRPLAY_API_TUNER_H

artifacts/sdrplay-api-headers/v3_08/sdrplay_api.h

@@ -1,230 +0,0 @@
-#ifndef SDRPLAY_API_H
-#define SDRPLAY_API_H
-
-#include "sdrplay_api_dev.h"
-#include "sdrplay_api_rx_channel.h"
-#include "sdrplay_api_callback.h"
-
-//#if defined(_M_X64) || defined(_M_IX86)
-//#include "windows.h"
-//#elif defined (__GNUC__)
-typedef void *HANDLE;
-//#endif
-//
-//#ifndef _SDRPLAY_DLL_QUALIFIER
-//#if !defined(STATIC_LIB) && (defined(_M_X64) || defined(_M_IX86))
-//#define _SDRPLAY_DLL_QUALIFIER __declspec(dllimport)
-//#elif defined(STATIC_LIB) || defined(__GNUC__)
-//#define _SDRPLAY_DLL_QUALIFIER
-//#endif
-//#endif  // _SDRPLAY_DLL_QUALIFIER
-
-// Application code should check that it is compiled against the same API version
-// sdrplay_api_ApiVersion() returns the API version 
-#define SDRPLAY_API_VERSION                   (float)(3.08)
-
-// API Constants
-#define SDRPLAY_MAX_DEVICES                   (16)
-#define SDRPLAY_MAX_TUNERS_PER_DEVICE         (2)
-
-#define SDRPLAY_MAX_SER_NO_LEN                (64)
-#define SDRPLAY_MAX_ROOT_NM_LEN               (32)
-
-#define SDRPLAY_RSP1_ID                       (1)
-#define SDRPLAY_RSP1A_ID                      (255)
-#define SDRPLAY_RSP2_ID                       (2)
-#define SDRPLAY_RSPduo_ID                     (3)
-#define SDRPLAY_RSPdx_ID                      (4)
-
-// Enum types
-typedef enum
-{
-    sdrplay_api_Success               = 0,
-    sdrplay_api_Fail                  = 1,
-    sdrplay_api_InvalidParam          = 2,
-    sdrplay_api_OutOfRange            = 3,
-    sdrplay_api_GainUpdateError       = 4,
-    sdrplay_api_RfUpdateError         = 5,
-    sdrplay_api_FsUpdateError         = 6,
-    sdrplay_api_HwError               = 7,
-    sdrplay_api_AliasingError         = 8,
-    sdrplay_api_AlreadyInitialised    = 9,
-    sdrplay_api_NotInitialised        = 10,
-    sdrplay_api_NotEnabled            = 11,
-    sdrplay_api_HwVerError            = 12,
-    sdrplay_api_OutOfMemError         = 13,
-    sdrplay_api_ServiceNotResponding  = 14,
-    sdrplay_api_StartPending          = 15,
-    sdrplay_api_StopPending           = 16,
-    sdrplay_api_InvalidMode           = 17,
-    sdrplay_api_FailedVerification1   = 18,
-    sdrplay_api_FailedVerification2   = 19,
-    sdrplay_api_FailedVerification3   = 20,
-    sdrplay_api_FailedVerification4   = 21,
-    sdrplay_api_FailedVerification5   = 22,
-    sdrplay_api_FailedVerification6   = 23,
-    sdrplay_api_InvalidServiceVersion = 24
-} sdrplay_api_ErrT;
-
-typedef enum
-{
-    sdrplay_api_Update_None                        = 0x00000000,
-
-    // Reasons for master only mode 
-    sdrplay_api_Update_Dev_Fs                      = 0x00000001,
-    sdrplay_api_Update_Dev_Ppm                     = 0x00000002,
-    sdrplay_api_Update_Dev_SyncUpdate              = 0x00000004,
-    sdrplay_api_Update_Dev_ResetFlags              = 0x00000008,
-
-    sdrplay_api_Update_Rsp1a_BiasTControl          = 0x00000010,
-    sdrplay_api_Update_Rsp1a_RfNotchControl        = 0x00000020,
-    sdrplay_api_Update_Rsp1a_RfDabNotchControl     = 0x00000040,
-
-    sdrplay_api_Update_Rsp2_BiasTControl           = 0x00000080,
-    sdrplay_api_Update_Rsp2_AmPortSelect           = 0x00000100,
-    sdrplay_api_Update_Rsp2_AntennaControl         = 0x00000200,
-    sdrplay_api_Update_Rsp2_RfNotchControl         = 0x00000400,
-    sdrplay_api_Update_Rsp2_ExtRefControl          = 0x00000800,
-
-    sdrplay_api_Update_RspDuo_ExtRefControl        = 0x00001000,
-
-    sdrplay_api_Update_Master_Spare_1              = 0x00002000,
-    sdrplay_api_Update_Master_Spare_2              = 0x00004000,
-
-    // Reasons for master and slave mode
-    // Note: sdrplay_api_Update_Tuner_Gr MUST be the first value defined in this section!
-    sdrplay_api_Update_Tuner_Gr                    = 0x00008000,
-    sdrplay_api_Update_Tuner_GrLimits              = 0x00010000,
-    sdrplay_api_Update_Tuner_Frf                   = 0x00020000,
-    sdrplay_api_Update_Tuner_BwType                = 0x00040000,
-    sdrplay_api_Update_Tuner_IfType                = 0x00080000,
-    sdrplay_api_Update_Tuner_DcOffset              = 0x00100000,
-    sdrplay_api_Update_Tuner_LoMode                = 0x00200000,
-
-    sdrplay_api_Update_Ctrl_DCoffsetIQimbalance    = 0x00400000,
-    sdrplay_api_Update_Ctrl_Decimation             = 0x00800000,
-    sdrplay_api_Update_Ctrl_Agc                    = 0x01000000,
-    sdrplay_api_Update_Ctrl_AdsbMode               = 0x02000000,
-    sdrplay_api_Update_Ctrl_OverloadMsgAck         = 0x04000000,
-
-    sdrplay_api_Update_RspDuo_BiasTControl         = 0x08000000,
-    sdrplay_api_Update_RspDuo_AmPortSelect         = 0x10000000,
-    sdrplay_api_Update_RspDuo_Tuner1AmNotchControl = 0x20000000,
-    sdrplay_api_Update_RspDuo_RfNotchControl       = 0x40000000,
-    sdrplay_api_Update_RspDuo_RfDabNotchControl    = 0x80000000,
-} sdrplay_api_ReasonForUpdateT;
-
-typedef enum
-{
-    sdrplay_api_Update_Ext1_None                   = 0x00000000,
-
-    // Reasons for master only mode 
-    sdrplay_api_Update_RspDx_HdrEnable             = 0x00000001,
-    sdrplay_api_Update_RspDx_BiasTControl          = 0x00000002,
-    sdrplay_api_Update_RspDx_AntennaControl        = 0x00000004,
-    sdrplay_api_Update_RspDx_RfNotchControl        = 0x00000008,
-    sdrplay_api_Update_RspDx_RfDabNotchControl     = 0x00000010,
-    sdrplay_api_Update_RspDx_HdrBw                 = 0x00000020,
-
-    // Reasons for master and slave mode
-} sdrplay_api_ReasonForUpdateExtension1T;
-
-typedef enum
-{
-    sdrplay_api_DbgLvl_Disable       = 0,
-    sdrplay_api_DbgLvl_Verbose       = 1,
-    sdrplay_api_DbgLvl_Warning       = 2,
-    sdrplay_api_DbgLvl_Error         = 3,
-    sdrplay_api_DbgLvl_Message       = 4,
-} sdrplay_api_DbgLvl_t;
-
-// Device structure 
-typedef struct 
-{
-    char SerNo[SDRPLAY_MAX_SER_NO_LEN];
-    unsigned char hwVer;
-    sdrplay_api_TunerSelectT tuner;
-    sdrplay_api_RspDuoModeT rspDuoMode;
-    unsigned char valid;
-    double rspDuoSampleFreq;
-    HANDLE dev;
-} sdrplay_api_DeviceT;
-
-// Device parameter structure
-typedef struct 
-{
-    sdrplay_api_DevParamsT       *devParams;
-    sdrplay_api_RxChannelParamsT *rxChannelA;
-    sdrplay_api_RxChannelParamsT *rxChannelB;
-} sdrplay_api_DeviceParamsT;
-
-// Extended error message structure
-typedef struct 
-{
-    char file[256];
-    char function[256];
-    int  line;
-    char message[1024];
-} sdrplay_api_ErrorInfoT;
-
-// Comman API function types
-typedef sdrplay_api_ErrT        (*sdrplay_api_Open_t)(void);    
-typedef sdrplay_api_ErrT        (*sdrplay_api_Close_t)(void);    
-typedef sdrplay_api_ErrT        (*sdrplay_api_ApiVersion_t)(float *apiVer);    
-typedef sdrplay_api_ErrT        (*sdrplay_api_LockDeviceApi_t)(void);    
-typedef sdrplay_api_ErrT        (*sdrplay_api_UnlockDeviceApi_t)(void);    
-typedef sdrplay_api_ErrT        (*sdrplay_api_GetDevices_t)(sdrplay_api_DeviceT *devices, unsigned int *numDevs, unsigned int maxDevs);    
-typedef sdrplay_api_ErrT        (*sdrplay_api_SelectDevice_t)(sdrplay_api_DeviceT *device);    
-typedef sdrplay_api_ErrT        (*sdrplay_api_ReleaseDevice_t)(sdrplay_api_DeviceT *device);    
-typedef const char*             (*sdrplay_api_GetErrorString_t)(sdrplay_api_ErrT err);
-typedef sdrplay_api_ErrorInfoT* (*sdrplay_api_GetLastError_t)(sdrplay_api_DeviceT *device);
-typedef sdrplay_api_ErrT        (*sdrplay_api_DisableHeartbeat_t)(void);
-
-// Device API function types
-typedef sdrplay_api_ErrT        (*sdrplay_api_DebugEnable_t)(HANDLE dev, sdrplay_api_DbgLvl_t dbgLvl); 
-typedef sdrplay_api_ErrT        (*sdrplay_api_GetDeviceParams_t)(HANDLE dev, sdrplay_api_DeviceParamsT **deviceParams); 
-typedef sdrplay_api_ErrT        (*sdrplay_api_Init_t)(HANDLE dev, sdrplay_api_CallbackFnsT *callbackFns, void *cbContext); 
-typedef sdrplay_api_ErrT        (*sdrplay_api_Uninit_t)(HANDLE dev);
-typedef sdrplay_api_ErrT        (*sdrplay_api_Update_t)(HANDLE dev, sdrplay_api_TunerSelectT tuner, sdrplay_api_ReasonForUpdateT reasonForUpdate, sdrplay_api_ReasonForUpdateExtension1T reasonForUpdateExt1);
-typedef sdrplay_api_ErrT        (*sdrplay_api_SwapRspDuoActiveTuner_t)(HANDLE dev, sdrplay_api_TunerSelectT *tuner, sdrplay_api_RspDuo_AmPortSelectT tuner1AmPortSel);
-typedef sdrplay_api_ErrT        (*sdrplay_api_SwapRspDuoDualTunerModeSampleRate_t)(double *currentSampleRate, double newSampleRate);
-typedef sdrplay_api_ErrT        (*sdrplay_api_SwapRspDuoMode_t)(sdrplay_api_DeviceT *currDevice, sdrplay_api_DeviceParamsT **deviceParams,
-                                                                sdrplay_api_RspDuoModeT rspDuoMode, double sampleRate, sdrplay_api_TunerSelectT tuner,
-                                                                sdrplay_api_Bw_MHzT bwType, sdrplay_api_If_kHzT ifType, sdrplay_api_RspDuo_AmPortSelectT tuner1AmPortSel);
-
-// API function definitions
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-
-//    // Comman API function definitions
-//    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrT        sdrplay_api_Open(void);
-//    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrT        sdrplay_api_Close(void);
-//    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrT        sdrplay_api_ApiVersion(float *apiVer);
-//    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrT        sdrplay_api_LockDeviceApi(void);
-//    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrT        sdrplay_api_UnlockDeviceApi(void);
-//    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrT        sdrplay_api_GetDevices(sdrplay_api_DeviceT *devices, unsigned int *numDevs, unsigned int maxDevs);
-//    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrT        sdrplay_api_SelectDevice(sdrplay_api_DeviceT *device);
-//    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrT        sdrplay_api_ReleaseDevice(sdrplay_api_DeviceT *device);
-//    _SDRPLAY_DLL_QUALIFIER const char*             sdrplay_api_GetErrorString(sdrplay_api_ErrT err);
-//    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrorInfoT* sdrplay_api_GetLastError(sdrplay_api_DeviceT *device);
-//    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrT        sdrplay_api_DisableHeartbeat(void); // Must be called before sdrplay_api_SelectDevice()
-//
-//    // Device API function definitions
-//    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrT        sdrplay_api_DebugEnable(HANDLE dev, sdrplay_api_DbgLvl_t enable);
-//    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrT        sdrplay_api_GetDeviceParams(HANDLE dev, sdrplay_api_DeviceParamsT **deviceParams);
-//    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrT        sdrplay_api_Init(HANDLE dev, sdrplay_api_CallbackFnsT *callbackFns, void *cbContext);
-//    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrT        sdrplay_api_Uninit(HANDLE dev);
-//    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrT        sdrplay_api_Update(HANDLE dev, sdrplay_api_TunerSelectT tuner, sdrplay_api_ReasonForUpdateT reasonForUpdate, sdrplay_api_ReasonForUpdateExtension1T reasonForUpdateExt1);
-//    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrT        sdrplay_api_SwapRspDuoActiveTuner(HANDLE dev, sdrplay_api_TunerSelectT *currentTuner, sdrplay_api_RspDuo_AmPortSelectT tuner1AmPortSel);
-//    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrT        sdrplay_api_SwapRspDuoDualTunerModeSampleRate(HANDLE dev, double *currentSampleRate, double newSampleRate);
-//    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrT        sdrplay_api_SwapRspDuoMode(sdrplay_api_DeviceT *currDevice, sdrplay_api_DeviceParamsT **deviceParams,
-//                                                                              sdrplay_api_RspDuoModeT rspDuoMode, double sampleRate, sdrplay_api_TunerSelectT tuner,
-//                                                                              sdrplay_api_Bw_MHzT bwType, sdrplay_api_If_kHzT ifType, sdrplay_api_RspDuo_AmPortSelectT tuner1AmPortSel);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif //SDRPLAY_API_H

artifacts/sdrplay-api-headers/v3_08/sdrplay_api_callback.h

@@ -1,78 +0,0 @@
-#ifndef SDRPLAY_API_CALLBACK_H
-#define SDRPLAY_API_CALLBACK_H
-
-// Event callback enums
-typedef enum
-{
-    sdrplay_api_Overload_Detected     = 0,
-    sdrplay_api_Overload_Corrected    = 1,
-} sdrplay_api_PowerOverloadCbEventIdT;
-
-typedef enum
-{
-    sdrplay_api_MasterInitialised      = 0,
-    sdrplay_api_SlaveAttached          = 1,
-    sdrplay_api_SlaveDetached          = 2,
-    sdrplay_api_SlaveInitialised       = 3,
-    sdrplay_api_SlaveUninitialised     = 4,
-    sdrplay_api_MasterDllDisappeared   = 5,
-    sdrplay_api_SlaveDllDisappeared    = 6,
-} sdrplay_api_RspDuoModeCbEventIdT;
-
-typedef enum
-{
-    sdrplay_api_GainChange            = 0,
-    sdrplay_api_PowerOverloadChange   = 1,
-    sdrplay_api_DeviceRemoved         = 2,
-    sdrplay_api_RspDuoModeChange      = 3,
-} sdrplay_api_EventT;
-
-// Event callback parameter structs
-typedef struct 
-{
-    unsigned int gRdB;
-    unsigned int lnaGRdB;
-    double currGain;
-} sdrplay_api_GainCbParamT;
-
-typedef struct 
-{
-    sdrplay_api_PowerOverloadCbEventIdT powerOverloadChangeType;
-} sdrplay_api_PowerOverloadCbParamT;
-
-typedef struct 
-{
-    sdrplay_api_RspDuoModeCbEventIdT modeChangeType;
-} sdrplay_api_RspDuoModeCbParamT;
-
-// Event parameters overlay
-typedef union
-{
-    sdrplay_api_GainCbParamT          gainParams;
-    sdrplay_api_PowerOverloadCbParamT powerOverloadParams;
-    sdrplay_api_RspDuoModeCbParamT    rspDuoModeParams;
-} sdrplay_api_EventParamsT;
-
-// Stream callback parameter structs
-typedef struct 
-{
-    unsigned int firstSampleNum;
-    int grChanged;
-    int rfChanged;
-    int fsChanged;
-    unsigned int numSamples;
-} sdrplay_api_StreamCbParamsT;
-
-// Callback function prototypes
-typedef void (*sdrplay_api_StreamCallback_t)(short *xi, short *xq, sdrplay_api_StreamCbParamsT *params, unsigned int numSamples, unsigned int reset, void *cbContext); 
-typedef void (*sdrplay_api_EventCallback_t)(sdrplay_api_EventT eventId, sdrplay_api_TunerSelectT tuner, sdrplay_api_EventParamsT *params, void *cbContext); 
-
-// Callback function struct
-typedef struct 
-{
-    sdrplay_api_StreamCallback_t StreamACbFn;
-    sdrplay_api_StreamCallback_t StreamBCbFn;
-    sdrplay_api_EventCallback_t  EventCbFn;
-} sdrplay_api_CallbackFnsT;
-
-#endif //SDRPLAY_API_CALLBACK_H

artifacts/sdrplay-api-headers/v3_08/sdrplay_api_control.h

@@ -1,55 +0,0 @@
-#ifndef SDRPLAY_API_CONTROL_H
-#define SDRPLAY_API_CONTROL_H
-
-// Control parameter enums
-typedef enum
-{
-    sdrplay_api_AGC_DISABLE  = 0,
-    sdrplay_api_AGC_100HZ    = 1,
-    sdrplay_api_AGC_50HZ     = 2,
-    sdrplay_api_AGC_5HZ      = 3,
-    sdrplay_api_AGC_CTRL_EN  = 4
-} sdrplay_api_AgcControlT;
-
-typedef enum
-{
-    sdrplay_api_ADSB_DECIMATION                  = 0,
-    sdrplay_api_ADSB_NO_DECIMATION_LOWPASS       = 1,
-    sdrplay_api_ADSB_NO_DECIMATION_BANDPASS_2MHZ = 2,
-    sdrplay_api_ADSB_NO_DECIMATION_BANDPASS_3MHZ = 3
-} sdrplay_api_AdsbModeT;
-
-// Control parameter structs
-typedef struct 
-{
-    unsigned char DCenable;          // default: 1
-    unsigned char IQenable;          // default: 1
-} sdrplay_api_DcOffsetT;
-
-typedef struct 
-{
-    unsigned char enable;            // default: 0
-    unsigned char decimationFactor;  // default: 1
-    unsigned char wideBandSignal;    // default: 0
-} sdrplay_api_DecimationT;
-
-typedef struct 
-{
-    sdrplay_api_AgcControlT enable;    // default: sdrplay_api_AGC_50HZ
-    int setPoint_dBfs;                 // default: -60
-    unsigned short attack_ms;          // default: 0
-    unsigned short decay_ms;           // default: 0
-    unsigned short decay_delay_ms;     // default: 0
-    unsigned short decay_threshold_dB; // default: 0
-    int syncUpdate;                    // default: 0
-} sdrplay_api_AgcT;
-
-typedef struct 
-{
-    sdrplay_api_DcOffsetT dcOffset;
-    sdrplay_api_DecimationT decimation;
-    sdrplay_api_AgcT agc;
-    sdrplay_api_AdsbModeT adsbMode;  //default: sdrplay_api_ADSB_DECIMATION
-} sdrplay_api_ControlParamsT;
-
-#endif //SDRPLAY_API_CONTROL_H

artifacts/sdrplay-api-headers/v3_08/sdrplay_api_dev.h

@@ -1,51 +0,0 @@
-#ifndef SDRPLAY_API_DEV_H
-#define SDRPLAY_API_DEV_H
-
-#include "sdrplay_api_rsp1a.h"
-#include "sdrplay_api_rsp2.h"
-#include "sdrplay_api_rspDuo.h"
-#include "sdrplay_api_rspDx.h"
-
-// Dev parameter enums
-typedef enum
-{
-    sdrplay_api_ISOCH = 0,
-    sdrplay_api_BULK  = 1
-} sdrplay_api_TransferModeT;
-
-// Dev parameter structs
-typedef struct 
-{
-    double fsHz;                        // default: 2000000.0
-    unsigned char syncUpdate;           // default: 0
-    unsigned char reCal;                // default: 0
-} sdrplay_api_FsFreqT;
-
-typedef struct 
-{
-    unsigned int sampleNum;             // default: 0
-    unsigned int period;                // default: 0
-} sdrplay_api_SyncUpdateT;
-
-typedef struct 
-{
-    unsigned char resetGainUpdate;      // default: 0
-    unsigned char resetRfUpdate;        // default: 0
-    unsigned char resetFsUpdate;        // default: 0
-} sdrplay_api_ResetFlagsT;   
-
-typedef struct 
-{
-    double ppm;                         // default: 0.0
-    sdrplay_api_FsFreqT fsFreq;
-    sdrplay_api_SyncUpdateT syncUpdate; 
-    sdrplay_api_ResetFlagsT resetFlags; 
-    sdrplay_api_TransferModeT mode;     // default: sdrplay_api_ISOCH
-    unsigned int samplesPerPkt;         // default: 0 (output param)
-    sdrplay_api_Rsp1aParamsT rsp1aParams;
-    sdrplay_api_Rsp2ParamsT rsp2Params;
-    sdrplay_api_RspDuoParamsT rspDuoParams;
-    sdrplay_api_RspDxParamsT rspDxParams;
-} sdrplay_api_DevParamsT;
-
-#endif //SDRPLAY_API_DEV_H

artifacts/sdrplay-api-headers/v3_08/sdrplay_api_rsp1a.h

@@ -1,22 +0,0 @@
-#ifndef SDRPLAY_API_RSP1A_H
-#define SDRPLAY_API_RSP1A_H
-
-#define RSPIA_NUM_LNA_STATES         10
-#define RSPIA_NUM_LNA_STATES_AM      7
-#define RSPIA_NUM_LNA_STATES_LBAND   9
-
-// RSP1A parameter enums
-
-// RSP1A parameter structs
-typedef struct 
-{
-    unsigned char rfNotchEnable;                              // default: 0
-    unsigned char rfDabNotchEnable;                           // default: 0
-} sdrplay_api_Rsp1aParamsT;
-
-typedef struct 
-{
-    unsigned char biasTEnable;                   // default: 0
-} sdrplay_api_Rsp1aTunerParamsT;
-
-#endif //SDRPLAY_API_RSP1A_H

artifacts/sdrplay-api-headers/v3_08/sdrplay_api_rsp2.h

@@ -1,35 +0,0 @@
-#ifndef SDRPLAY_API_RSP2_H
-#define SDRPLAY_API_RSP2_H
-
-#define RSPII_NUM_LNA_STATES         9
-#define RSPII_NUM_LNA_STATES_AMPORT  5
-#define RSPII_NUM_LNA_STATES_420MHZ  6
-
-// RSP2 parameter enums
-typedef enum
-{
-    sdrplay_api_Rsp2_ANTENNA_A = 5,
-    sdrplay_api_Rsp2_ANTENNA_B = 6,
-} sdrplay_api_Rsp2_AntennaSelectT;
-
-typedef enum
-{
-    sdrplay_api_Rsp2_AMPORT_1 = 1,
-    sdrplay_api_Rsp2_AMPORT_2 = 0,
-} sdrplay_api_Rsp2_AmPortSelectT;
-
-// RSP2 parameter structs
-typedef struct 
-{
-    unsigned char extRefOutputEn;                // default: 0
-} sdrplay_api_Rsp2ParamsT;
-
-typedef struct 
-{
-    unsigned char biasTEnable;                   // default: 0
-    sdrplay_api_Rsp2_AmPortSelectT amPortSel;    // default: sdrplay_api_Rsp2_AMPORT_2
-    sdrplay_api_Rsp2_AntennaSelectT antennaSel;  // default: sdrplay_api_Rsp2_ANTENNA_A
-    unsigned char rfNotchEnable;                 // default: 0
-} sdrplay_api_Rsp2TunerParamsT;
-
-#endif //SDRPLAY_API_RSP2_H

artifacts/sdrplay-api-headers/v3_08/sdrplay_api_rspDuo.h

@@ -1,40 +0,0 @@
-#ifndef SDRPLAY_API_RSPduo_H
-#define SDRPLAY_API_RSPduo_H
-
-#define RSPDUO_NUM_LNA_STATES         10
-#define RSPDUO_NUM_LNA_STATES_AMPORT  5
-#define RSPDUO_NUM_LNA_STATES_AM      7
-#define RSPDUO_NUM_LNA_STATES_LBAND   9
-
-// RSPduo parameter enums
-typedef enum
-{
-    sdrplay_api_RspDuoMode_Unknown      = 0,
-    sdrplay_api_RspDuoMode_Single_Tuner = 1,
-    sdrplay_api_RspDuoMode_Dual_Tuner   = 2,
-    sdrplay_api_RspDuoMode_Master       = 4,
-    sdrplay_api_RspDuoMode_Slave        = 8,
-} sdrplay_api_RspDuoModeT;
-
-typedef enum
-{
-    sdrplay_api_RspDuo_AMPORT_1 = 1,
-    sdrplay_api_RspDuo_AMPORT_2 = 0,
-} sdrplay_api_RspDuo_AmPortSelectT;
-
-// RSPduo parameter structs
-typedef struct 
-{
-    int extRefOutputEn;                             // default: 0
-} sdrplay_api_RspDuoParamsT;
-
-typedef struct 
-{
-    unsigned char biasTEnable;                      // default: 0
-    sdrplay_api_RspDuo_AmPortSelectT tuner1AmPortSel; // default: sdrplay_api_RspDuo_AMPORT_2
-    unsigned char tuner1AmNotchEnable;              // default: 0
-    unsigned char rfNotchEnable;                    // default: 0
-    unsigned char rfDabNotchEnable;                 // default: 0
-} sdrplay_api_RspDuoTunerParamsT;
-
-#endif //SDRPLAY_API_RSPduo_H

artifacts/sdrplay-api-headers/v3_08/sdrplay_api_rspDx.h

@@ -1,45 +0,0 @@
-#ifndef SDRPLAY_API_RSPDX_H
-#define SDRPLAY_API_RSPDX_H
-
-#include "sdrplay_api_tuner.h"
-
-#define RSPDX_NUM_LNA_STATES               28   // Number of LNA states in all bands (except where defined differently below)
-#define RSPDX_NUM_LNA_STATES_AMPORT2_0_12  19   // Number of LNA states when using AM Port 2 between 0 and 12MHz
-#define RSPDX_NUM_LNA_STATES_AMPORT2_12_60 20   // Number of LNA states when using AM Port 2 between 12 and 60MHz
-#define RSPDX_NUM_LNA_STATES_VHF_BAND3     27   // Number of LNA states in VHF and Band3
-#define RSPDX_NUM_LNA_STATES_420MHZ        21   // Number of LNA states in 420MHz band
-#define RSPDX_NUM_LNA_STATES_LBAND         19   // Number of LNA states in L-band
-#define RSPDX_NUM_LNA_STATES_DX            26   // Number of LNA states in DX path
-
-// RSPdx parameter enums
-typedef enum
-{
-    sdrplay_api_RspDx_ANTENNA_A = 0,
-    sdrplay_api_RspDx_ANTENNA_B = 1,
-    sdrplay_api_RspDx_ANTENNA_C = 2,
-} sdrplay_api_RspDx_AntennaSelectT;
-
-typedef enum
-{
-    sdrplay_api_RspDx_HDRMODE_BW_0_200  = 0,
-    sdrplay_api_RspDx_HDRMODE_BW_0_500  = 1,
-    sdrplay_api_RspDx_HDRMODE_BW_1_200  = 2,
-    sdrplay_api_RspDx_HDRMODE_BW_1_700  = 3,
-} sdrplay_api_RspDx_HdrModeBwT;
-
-// RSPdx parameter structs
-typedef struct 
-{
-    unsigned char hdrEnable;                            // default: 0
-    unsigned char biasTEnable;                          // default: 0
-    sdrplay_api_RspDx_AntennaSelectT antennaSel;        // default: sdrplay_api_RspDx_ANTENNA_A
-    unsigned char rfNotchEnable;                        // default: 0
-    unsigned char rfDabNotchEnable;                     // default: 0
-} sdrplay_api_RspDxParamsT;
-
-typedef struct 
-{
-    sdrplay_api_RspDx_HdrModeBwT hdrBw;                 // default: sdrplay_api_RspDx_HDRMODE_BW_1_700
-} sdrplay_api_RspDxTunerParamsT;
-
-#endif //SDRPLAY_API_RSPDX_H

artifacts/sdrplay-api-headers/v3_08/sdrplay_api_rx_channel.h

@@ -1,21 +0,0 @@
-#ifndef SDRPLAY_API_RX_CHANNEL_H
-#define SDRPLAY_API_RX_CHANNEL_H
-
-#include "sdrplay_api_tuner.h"
-#include "sdrplay_api_control.h"
-#include "sdrplay_api_rsp1a.h"
-#include "sdrplay_api_rsp2.h"
-#include "sdrplay_api_rspDuo.h"
-#include "sdrplay_api_rspDx.h"
-
-typedef struct 
-{
-    sdrplay_api_TunerParamsT        tunerParams;    
-    sdrplay_api_ControlParamsT      ctrlParams;     
-    sdrplay_api_Rsp1aTunerParamsT   rsp1aTunerParams; 
-    sdrplay_api_Rsp2TunerParamsT    rsp2TunerParams; 
-    sdrplay_api_RspDuoTunerParamsT  rspDuoTunerParams;    
-    sdrplay_api_RspDxTunerParamsT   rspDxTunerParams;    
-} sdrplay_api_RxChannelParamsT;
-
-#endif //SDRPLAY_API_RX_CHANNEL_H

artifacts/sdrplay-api-headers/v3_08/sdrplay_api_tuner.h

@@ -1,93 +0,0 @@
-#ifndef SDRPLAY_API_TUNER_H
-#define SDRPLAY_API_TUNER_H
-
-#define MAX_BB_GR                         (59)
-
-// Tuner parameter enums
-typedef enum
-{
-    sdrplay_api_BW_Undefined = 0,
-    sdrplay_api_BW_0_200     = 200,
-    sdrplay_api_BW_0_300     = 300,
-    sdrplay_api_BW_0_600     = 600,
-    sdrplay_api_BW_1_536     = 1536,
-    sdrplay_api_BW_5_000     = 5000,
-    sdrplay_api_BW_6_000     = 6000,
-    sdrplay_api_BW_7_000     = 7000,
-    sdrplay_api_BW_8_000     = 8000
-} sdrplay_api_Bw_MHzT;
-
-typedef enum
-{
-    sdrplay_api_IF_Undefined = -1,
-    sdrplay_api_IF_Zero      = 0,
-    sdrplay_api_IF_0_450     = 450,
-    sdrplay_api_IF_1_620     = 1620,
-    sdrplay_api_IF_2_048     = 2048
-} sdrplay_api_If_kHzT;
-
-typedef enum
-{
-    sdrplay_api_LO_Undefined = 0,
-    sdrplay_api_LO_Auto      = 1,
-    sdrplay_api_LO_120MHz    = 2,
-    sdrplay_api_LO_144MHz    = 3,
-    sdrplay_api_LO_168MHz    = 4
-} sdrplay_api_LoModeT;
-
-typedef enum
-{
-    sdrplay_api_EXTENDED_MIN_GR = 0,
-    sdrplay_api_NORMAL_MIN_GR   = 20
-} sdrplay_api_MinGainReductionT;
-
-typedef enum
-{
-    sdrplay_api_Tuner_Neither  = 0,
-    sdrplay_api_Tuner_A        = 1,
-    sdrplay_api_Tuner_B        = 2,
-    sdrplay_api_Tuner_Both     = 3,
-} sdrplay_api_TunerSelectT;
-
-// Tuner parameter structs
-typedef struct
-{
-    float curr;
-    float max;
-    float min;
-} sdrplay_api_GainValuesT;
-
-typedef struct 
-{
-    int gRdB;                            // default: 50
-    unsigned char LNAstate;              // default: 0
-    unsigned char syncUpdate;            // default: 0
-    sdrplay_api_MinGainReductionT minGr; // default: sdrplay_api_NORMAL_MIN_GR
-    sdrplay_api_GainValuesT gainVals;    // output parameter
-} sdrplay_api_GainT;
-
-typedef struct 
-{
-    double rfHz;                         // default: 200000000.0
-    unsigned char syncUpdate;            // default: 0
-} sdrplay_api_RfFreqT;
-
-typedef struct 
-{
-    unsigned char dcCal;                 // default: 3 (Periodic mode)
-    unsigned char speedUp;               // default: 0 (No speedup)
-    int trackTime;                       // default: 1    (=> time in uSec = (72 * 3 * trackTime) / 24e6       = 9uSec)
-    int refreshRateTime;                 // default: 2048 (=> time in uSec = (72 * 3 * refreshRateTime) / 24e6 = 18432uSec)
-} sdrplay_api_DcOffsetTunerT;
-
-typedef struct 
-{
-    sdrplay_api_Bw_MHzT bwType;          // default: sdrplay_api_BW_0_200
-    sdrplay_api_If_kHzT ifType;          // default: sdrplay_api_IF_Zero
-    sdrplay_api_LoModeT loMode;          // default: sdrplay_api_LO_Auto
-    sdrplay_api_GainT gain;
-    sdrplay_api_RfFreqT rfFreq;
-    sdrplay_api_DcOffsetTunerT dcOffsetTuner;
-} sdrplay_api_TunerParamsT;
-
-#endif //SDRPLAY_API_TUNER_H

artifacts/sdrplay-api-headers/v3_15/sdrplay_api.h

@@ -1,235 +0,0 @@
-#ifndef SDRPLAY_API_H
-#define SDRPLAY_API_H
-
-#include "sdrplay_api_dev.h"
-#include "sdrplay_api_rx_channel.h"
-#include "sdrplay_api_callback.h"
-
-#if defined(_M_X64) || defined(_M_IX86) || defined(_M_ARM64)
-#include "windows.h"
-#elif defined (__GNUC__)
-typedef void *HANDLE;
-#endif
-
-#ifndef _SDRPLAY_DLL_QUALIFIER
-#if !defined(STATIC_LIB) && (defined(_M_X64) || defined(_M_IX86) || defined(_M_ARM64)) 
-#define _SDRPLAY_DLL_QUALIFIER __declspec(dllimport)
-#elif defined(STATIC_LIB) || defined(__GNUC__) 
-#define _SDRPLAY_DLL_QUALIFIER
-#endif
-#endif  // _SDRPLAY_DLL_QUALIFIER
-
-// Application code should check that it is compiled against the same API version
-// sdrplay_api_ApiVersion() returns the API version 
-#define SDRPLAY_API_VERSION                   (float)(3.15)
-
-// API Constants
-#define SDRPLAY_MAX_DEVICES                   (16)
-#define SDRPLAY_MAX_TUNERS_PER_DEVICE         (2)
-
-#define SDRPLAY_MAX_SER_NO_LEN                (64)
-#define SDRPLAY_MAX_ROOT_NM_LEN               (32)
-
-#define SDRPLAY_RSP1_ID                       (1)
-#define SDRPLAY_RSP1A_ID                      (255)
-#define SDRPLAY_RSP2_ID                       (2)
-#define SDRPLAY_RSPduo_ID                     (3)
-#define SDRPLAY_RSPdx_ID                      (4)
-#define SDRPLAY_RSP1B_ID                      (6)
-#define SDRPLAY_RSPdxR2_ID                    (7)
-
-// Enum types
-typedef enum
-{
-    sdrplay_api_Success               = 0,
-    sdrplay_api_Fail                  = 1,
-    sdrplay_api_InvalidParam          = 2,
-    sdrplay_api_OutOfRange            = 3,
-    sdrplay_api_GainUpdateError       = 4,
-    sdrplay_api_RfUpdateError         = 5,
-    sdrplay_api_FsUpdateError         = 6,
-    sdrplay_api_HwError               = 7,
-    sdrplay_api_AliasingError         = 8,
-    sdrplay_api_AlreadyInitialised    = 9,
-    sdrplay_api_NotInitialised        = 10,
-    sdrplay_api_NotEnabled            = 11,
-    sdrplay_api_HwVerError            = 12,
-    sdrplay_api_OutOfMemError         = 13,
-    sdrplay_api_ServiceNotResponding  = 14,
-    sdrplay_api_StartPending          = 15,
-    sdrplay_api_StopPending           = 16,
-    sdrplay_api_InvalidMode           = 17,
-    sdrplay_api_FailedVerification1   = 18,
-    sdrplay_api_FailedVerification2   = 19,
-    sdrplay_api_FailedVerification3   = 20,
-    sdrplay_api_FailedVerification4   = 21,
-    sdrplay_api_FailedVerification5   = 22,
-    sdrplay_api_FailedVerification6   = 23,
-    sdrplay_api_InvalidServiceVersion = 24
-} sdrplay_api_ErrT;
-
-typedef enum
-{
-    sdrplay_api_Update_None                        = 0x00000000,
-
-    // Reasons for master only mode 
-    sdrplay_api_Update_Dev_Fs                      = 0x00000001,
-    sdrplay_api_Update_Dev_Ppm                     = 0x00000002,
-    sdrplay_api_Update_Dev_SyncUpdate              = 0x00000004,
-    sdrplay_api_Update_Dev_ResetFlags              = 0x00000008,
-
-    sdrplay_api_Update_Rsp1a_BiasTControl          = 0x00000010,
-    sdrplay_api_Update_Rsp1a_RfNotchControl        = 0x00000020,
-    sdrplay_api_Update_Rsp1a_RfDabNotchControl     = 0x00000040,
-
-    sdrplay_api_Update_Rsp2_BiasTControl           = 0x00000080,
-    sdrplay_api_Update_Rsp2_AmPortSelect           = 0x00000100,
-    sdrplay_api_Update_Rsp2_AntennaControl         = 0x00000200,
-    sdrplay_api_Update_Rsp2_RfNotchControl         = 0x00000400,
-    sdrplay_api_Update_Rsp2_ExtRefControl          = 0x00000800,
-
-    sdrplay_api_Update_RspDuo_ExtRefControl        = 0x00001000,
-
-    sdrplay_api_Update_Master_Spare_1              = 0x00002000,
-    sdrplay_api_Update_Master_Spare_2              = 0x00004000,
-
-    // Reasons for master and slave mode
-    // Note: sdrplay_api_Update_Tuner_Gr MUST be the first value defined in this section!
-    sdrplay_api_Update_Tuner_Gr                    = 0x00008000,
-    sdrplay_api_Update_Tuner_GrLimits              = 0x00010000,
-    sdrplay_api_Update_Tuner_Frf                   = 0x00020000,
-    sdrplay_api_Update_Tuner_BwType                = 0x00040000,
-    sdrplay_api_Update_Tuner_IfType                = 0x00080000,
-    sdrplay_api_Update_Tuner_DcOffset              = 0x00100000,
-    sdrplay_api_Update_Tuner_LoMode                = 0x00200000,
-
-    sdrplay_api_Update_Ctrl_DCoffsetIQimbalance    = 0x00400000,
-    sdrplay_api_Update_Ctrl_Decimation             = 0x00800000,
-    sdrplay_api_Update_Ctrl_Agc                    = 0x01000000,
-    sdrplay_api_Update_Ctrl_AdsbMode               = 0x02000000,
-    sdrplay_api_Update_Ctrl_OverloadMsgAck         = 0x04000000,
-
-    sdrplay_api_Update_RspDuo_BiasTControl         = 0x08000000,
-    sdrplay_api_Update_RspDuo_AmPortSelect         = 0x10000000,
-    sdrplay_api_Update_RspDuo_Tuner1AmNotchControl = 0x20000000,
-    sdrplay_api_Update_RspDuo_RfNotchControl       = 0x40000000,
-    sdrplay_api_Update_RspDuo_RfDabNotchControl    = 0x80000000,
-} sdrplay_api_ReasonForUpdateT;
-
-typedef enum
-{
-    sdrplay_api_Update_Ext1_None                   = 0x00000000,
-
-    // Reasons for master only mode 
-    sdrplay_api_Update_RspDx_HdrEnable             = 0x00000001,
-    sdrplay_api_Update_RspDx_BiasTControl          = 0x00000002,
-    sdrplay_api_Update_RspDx_AntennaControl        = 0x00000004,
-    sdrplay_api_Update_RspDx_RfNotchControl        = 0x00000008,
-    sdrplay_api_Update_RspDx_RfDabNotchControl     = 0x00000010,
-    sdrplay_api_Update_RspDx_HdrBw                 = 0x00000020,
-    sdrplay_api_Update_RspDuo_ResetSlaveFlags      = 0x00000040,
-
-    // Reasons for master and slave mode
-} sdrplay_api_ReasonForUpdateExtension1T;
-
-typedef enum
-{
-    sdrplay_api_DbgLvl_Disable       = 0,
-    sdrplay_api_DbgLvl_Verbose       = 1,
-    sdrplay_api_DbgLvl_Warning       = 2,
-    sdrplay_api_DbgLvl_Error         = 3,
-    sdrplay_api_DbgLvl_Message       = 4,
-} sdrplay_api_DbgLvl_t;
-
-// Device structure 
-typedef struct 
-{
-    char SerNo[SDRPLAY_MAX_SER_NO_LEN];
-    unsigned char hwVer;
-    sdrplay_api_TunerSelectT tuner;
-    sdrplay_api_RspDuoModeT rspDuoMode;
-    unsigned char valid;
-    double rspDuoSampleFreq;
-    HANDLE dev;
-} sdrplay_api_DeviceT;
-
-// Device parameter structure
-typedef struct 
-{
-    sdrplay_api_DevParamsT       *devParams;
-    sdrplay_api_RxChannelParamsT *rxChannelA;
-    sdrplay_api_RxChannelParamsT *rxChannelB;
-} sdrplay_api_DeviceParamsT;
-
-// Extended error message structure
-typedef struct 
-{
-    char file[256];
-    char function[256];
-    int  line;
-    char message[1024];
-} sdrplay_api_ErrorInfoT;
-
-// Comman API function types
-typedef sdrplay_api_ErrT        (*sdrplay_api_Open_t)(void);    
-typedef sdrplay_api_ErrT        (*sdrplay_api_Close_t)(void);    
-typedef sdrplay_api_ErrT        (*sdrplay_api_ApiVersion_t)(float *apiVer);    
-typedef sdrplay_api_ErrT        (*sdrplay_api_LockDeviceApi_t)(void);    
-typedef sdrplay_api_ErrT        (*sdrplay_api_UnlockDeviceApi_t)(void);    
-typedef sdrplay_api_ErrT        (*sdrplay_api_GetDevices_t)(sdrplay_api_DeviceT *devices, unsigned int *numDevs, unsigned int maxDevs);    
-typedef sdrplay_api_ErrT        (*sdrplay_api_SelectDevice_t)(sdrplay_api_DeviceT *device);    
-typedef sdrplay_api_ErrT        (*sdrplay_api_ReleaseDevice_t)(sdrplay_api_DeviceT *device);    
-typedef const char*             (*sdrplay_api_GetErrorString_t)(sdrplay_api_ErrT err);
-typedef sdrplay_api_ErrorInfoT* (*sdrplay_api_GetLastError_t)(sdrplay_api_DeviceT *device);
-typedef sdrplay_api_ErrorInfoT* (*sdrplay_api_GetLastErrorByType_t)(sdrplay_api_DeviceT *device, int type, unsigned long long *time);
-typedef sdrplay_api_ErrT        (*sdrplay_api_DisableHeartbeat_t)(void);
-
-// Device API function types
-typedef sdrplay_api_ErrT        (*sdrplay_api_DebugEnable_t)(HANDLE dev, sdrplay_api_DbgLvl_t dbgLvl); 
-typedef sdrplay_api_ErrT        (*sdrplay_api_GetDeviceParams_t)(HANDLE dev, sdrplay_api_DeviceParamsT **deviceParams); 
-typedef sdrplay_api_ErrT        (*sdrplay_api_Init_t)(HANDLE dev, sdrplay_api_CallbackFnsT *callbackFns, void *cbContext); 
-typedef sdrplay_api_ErrT        (*sdrplay_api_Uninit_t)(HANDLE dev);
-typedef sdrplay_api_ErrT        (*sdrplay_api_Update_t)(HANDLE dev, sdrplay_api_TunerSelectT tuner, sdrplay_api_ReasonForUpdateT reasonForUpdate, sdrplay_api_ReasonForUpdateExtension1T reasonForUpdateExt1);
-typedef sdrplay_api_ErrT        (*sdrplay_api_SwapRspDuoActiveTuner_t)(HANDLE dev, sdrplay_api_TunerSelectT *tuner, sdrplay_api_RspDuo_AmPortSelectT tuner1AmPortSel);
-typedef sdrplay_api_ErrT        (*sdrplay_api_SwapRspDuoDualTunerModeSampleRate_t)(double *currentSampleRate, double newSampleRate);
-typedef sdrplay_api_ErrT        (*sdrplay_api_SwapRspDuoMode_t)(sdrplay_api_DeviceT *currDevice, sdrplay_api_DeviceParamsT **deviceParams,
-                                                                sdrplay_api_RspDuoModeT rspDuoMode, double sampleRate, sdrplay_api_TunerSelectT tuner,
-                                                                sdrplay_api_Bw_MHzT bwType, sdrplay_api_If_kHzT ifType, sdrplay_api_RspDuo_AmPortSelectT tuner1AmPortSel);
-
-// API function definitions
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-
-    // Comman API function definitions
-    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrT        sdrplay_api_Open(void);    
-    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrT        sdrplay_api_Close(void);    
-    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrT        sdrplay_api_ApiVersion(float *apiVer);    
-    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrT        sdrplay_api_LockDeviceApi(void);    
-    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrT        sdrplay_api_UnlockDeviceApi(void);    
-    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrT        sdrplay_api_GetDevices(sdrplay_api_DeviceT *devices, unsigned int *numDevs, unsigned int maxDevs);    
-    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrT        sdrplay_api_SelectDevice(sdrplay_api_DeviceT *device);   
-    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrT        sdrplay_api_ReleaseDevice(sdrplay_api_DeviceT *device);   
-    _SDRPLAY_DLL_QUALIFIER const char*             sdrplay_api_GetErrorString(sdrplay_api_ErrT err);
-    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrorInfoT* sdrplay_api_GetLastError(sdrplay_api_DeviceT *device);
-    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrorInfoT* sdrplay_api_GetLastErrorByType(sdrplay_api_DeviceT *device, int type, unsigned long long *time);
-    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrT        sdrplay_api_DisableHeartbeat(void); // Must be called before sdrplay_api_SelectDevice()
-
-    // Device API function definitions
-    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrT        sdrplay_api_DebugEnable(HANDLE dev, sdrplay_api_DbgLvl_t enable); 
-    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrT        sdrplay_api_GetDeviceParams(HANDLE dev, sdrplay_api_DeviceParamsT **deviceParams); 
-    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrT        sdrplay_api_Init(HANDLE dev, sdrplay_api_CallbackFnsT *callbackFns, void *cbContext); 
-    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrT        sdrplay_api_Uninit(HANDLE dev);
-    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrT        sdrplay_api_Update(HANDLE dev, sdrplay_api_TunerSelectT tuner, sdrplay_api_ReasonForUpdateT reasonForUpdate, sdrplay_api_ReasonForUpdateExtension1T reasonForUpdateExt1);
-    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrT        sdrplay_api_SwapRspDuoActiveTuner(HANDLE dev, sdrplay_api_TunerSelectT *currentTuner, sdrplay_api_RspDuo_AmPortSelectT tuner1AmPortSel);
-    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrT        sdrplay_api_SwapRspDuoDualTunerModeSampleRate(HANDLE dev, double *currentSampleRate, double newSampleRate);
-    _SDRPLAY_DLL_QUALIFIER sdrplay_api_ErrT        sdrplay_api_SwapRspDuoMode(sdrplay_api_DeviceT *currDevice, sdrplay_api_DeviceParamsT **deviceParams,
-                                                                              sdrplay_api_RspDuoModeT rspDuoMode, double sampleRate, sdrplay_api_TunerSelectT tuner,
-                                                                              sdrplay_api_Bw_MHzT bwType, sdrplay_api_If_kHzT ifType, sdrplay_api_RspDuo_AmPortSelectT tuner1AmPortSel);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif //SDRPLAY_API_H

artifacts/sdrplay-api-headers/v3_15/sdrplay_api_callback.h

@@ -1,79 +0,0 @@
-#ifndef SDRPLAY_API_CALLBACK_H
-#define SDRPLAY_API_CALLBACK_H
-
-// Event callback enums
-typedef enum
-{
-    sdrplay_api_Overload_Detected     = 0,
-    sdrplay_api_Overload_Corrected    = 1,
-} sdrplay_api_PowerOverloadCbEventIdT;
-
-typedef enum
-{
-    sdrplay_api_MasterInitialised      = 0,
-    sdrplay_api_SlaveAttached          = 1,
-    sdrplay_api_SlaveDetached          = 2,
-    sdrplay_api_SlaveInitialised       = 3,
-    sdrplay_api_SlaveUninitialised     = 4,
-    sdrplay_api_MasterDllDisappeared   = 5,
-    sdrplay_api_SlaveDllDisappeared    = 6,
-} sdrplay_api_RspDuoModeCbEventIdT;
-
-typedef enum
-{
-    sdrplay_api_GainChange            = 0,
-    sdrplay_api_PowerOverloadChange   = 1,
-    sdrplay_api_DeviceRemoved         = 2,
-    sdrplay_api_RspDuoModeChange      = 3,
-    sdrplay_api_DeviceFailure         = 4,
-} sdrplay_api_EventT;
-
-// Event callback parameter structs
-typedef struct 
-{
-    unsigned int gRdB;
-    unsigned int lnaGRdB;
-    double currGain;
-} sdrplay_api_GainCbParamT;
-
-typedef struct 
-{
-    sdrplay_api_PowerOverloadCbEventIdT powerOverloadChangeType;
-} sdrplay_api_PowerOverloadCbParamT;
-
-typedef struct 
-{
-    sdrplay_api_RspDuoModeCbEventIdT modeChangeType;
-} sdrplay_api_RspDuoModeCbParamT;
-
-// Event parameters overlay
-typedef union
-{
-    sdrplay_api_GainCbParamT          gainParams;
-    sdrplay_api_PowerOverloadCbParamT powerOverloadParams;
-    sdrplay_api_RspDuoModeCbParamT    rspDuoModeParams;
-} sdrplay_api_EventParamsT;
-
-// Stream callback parameter structs
-typedef struct 
-{
-    unsigned int firstSampleNum;
-    int grChanged;
-    int rfChanged;
-    int fsChanged;
-    unsigned int numSamples;
-} sdrplay_api_StreamCbParamsT;
-
-// Callback function prototypes
-typedef void (*sdrplay_api_StreamCallback_t)(short *xi, short *xq, sdrplay_api_StreamCbParamsT *params, unsigned int numSamples, unsigned int reset, void *cbContext); 
-typedef void (*sdrplay_api_EventCallback_t)(sdrplay_api_EventT eventId, sdrplay_api_TunerSelectT tuner, sdrplay_api_EventParamsT *params, void *cbContext); 
-
-// Callback function struct
-typedef struct 
-{
-    sdrplay_api_StreamCallback_t StreamACbFn;
-    sdrplay_api_StreamCallback_t StreamBCbFn;
-    sdrplay_api_EventCallback_t  EventCbFn;
-} sdrplay_api_CallbackFnsT;
-
-#endif //SDRPLAY_API_CALLBACK_H

artifacts/sdrplay-api-headers/v3_15/sdrplay_api_control.h

@@ -1,55 +0,0 @@
-#ifndef SDRPLAY_API_CONTROL_H
-#define SDRPLAY_API_CONTROL_H
-
-// Control parameter enums
-typedef enum
-{
-    sdrplay_api_AGC_DISABLE  = 0,
-    sdrplay_api_AGC_100HZ    = 1,
-    sdrplay_api_AGC_50HZ     = 2,
-    sdrplay_api_AGC_5HZ      = 3,
-    sdrplay_api_AGC_CTRL_EN  = 4
-} sdrplay_api_AgcControlT;
-
-typedef enum
-{
-    sdrplay_api_ADSB_DECIMATION                  = 0,
-    sdrplay_api_ADSB_NO_DECIMATION_LOWPASS       = 1,
-    sdrplay_api_ADSB_NO_DECIMATION_BANDPASS_2MHZ = 2,
-    sdrplay_api_ADSB_NO_DECIMATION_BANDPASS_3MHZ = 3
-} sdrplay_api_AdsbModeT;
-
-// Control parameter structs
-typedef struct 
-{
-    unsigned char DCenable;          // default: 1
-    unsigned char IQenable;          // default: 1
-} sdrplay_api_DcOffsetT;
-
-typedef struct 
-{
-    unsigned char enable;            // default: 0
-    unsigned char decimationFactor;  // default: 1
-    unsigned char wideBandSignal;    // default: 0
-} sdrplay_api_DecimationT;
-
-typedef struct 
-{
-    sdrplay_api_AgcControlT enable;    // default: sdrplay_api_AGC_50HZ
-    int setPoint_dBfs;                 // default: -60
-    unsigned short attack_ms;          // default: 0
-    unsigned short decay_ms;           // default: 0
-    unsigned short decay_delay_ms;     // default: 0
-    unsigned short decay_threshold_dB; // default: 0
-    int syncUpdate;                    // default: 0
-} sdrplay_api_AgcT;
-
-typedef struct 
-{
-    sdrplay_api_DcOffsetT dcOffset;
-    sdrplay_api_DecimationT decimation;
-    sdrplay_api_AgcT agc;
-    sdrplay_api_AdsbModeT adsbMode;  //default: sdrplay_api_ADSB_DECIMATION
-} sdrplay_api_ControlParamsT;
-
-#endif //SDRPLAY_API_CONTROL_H

artifacts/sdrplay-api-headers/v3_15/sdrplay_api_dev.h

@@ -1,51 +0,0 @@
-#ifndef SDRPLAY_API_DEV_H
-#define SDRPLAY_API_DEV_H
-
-#include "sdrplay_api_rsp1a.h"
-#include "sdrplay_api_rsp2.h"
-#include "sdrplay_api_rspDuo.h"
-#include "sdrplay_api_rspDx.h"
-
-// Dev parameter enums
-typedef enum
-{
-    sdrplay_api_ISOCH = 0,
-    sdrplay_api_BULK  = 1
-} sdrplay_api_TransferModeT;
-
-// Dev parameter structs
-typedef struct 
-{
-    double fsHz;                        // default: 2000000.0
-    unsigned char syncUpdate;           // default: 0
-    unsigned char reCal;                // default: 0
-} sdrplay_api_FsFreqT;
-
-typedef struct 
-{
-    unsigned int sampleNum;             // default: 0
-    unsigned int period;                // default: 0
-} sdrplay_api_SyncUpdateT;
-
-typedef struct 
-{
-    unsigned char resetGainUpdate;      // default: 0
-    unsigned char resetRfUpdate;        // default: 0
-    unsigned char resetFsUpdate;        // default: 0
-} sdrplay_api_ResetFlagsT;   
-
-typedef struct 
-{
-    double ppm;                         // default: 0.0
-    sdrplay_api_FsFreqT fsFreq;
-    sdrplay_api_SyncUpdateT syncUpdate; 
-    sdrplay_api_ResetFlagsT resetFlags; 
-    sdrplay_api_TransferModeT mode;     // default: sdrplay_api_ISOCH
-    unsigned int samplesPerPkt;         // default: 0 (output param)
-    sdrplay_api_Rsp1aParamsT rsp1aParams;
-    sdrplay_api_Rsp2ParamsT rsp2Params;
-    sdrplay_api_RspDuoParamsT rspDuoParams;
-    sdrplay_api_RspDxParamsT rspDxParams;
-} sdrplay_api_DevParamsT;
-
-#endif //SDRPLAY_API_DEV_H

artifacts/sdrplay-api-headers/v3_15/sdrplay_api_rsp1a.h

@@ -1,22 +0,0 @@
-#ifndef SDRPLAY_API_RSP1A_H
-#define SDRPLAY_API_RSP1A_H
-
-#define RSPIA_NUM_LNA_STATES         10
-#define RSPIA_NUM_LNA_STATES_AM      7
-#define RSPIA_NUM_LNA_STATES_LBAND   9
-
-// RSP1A parameter enums
-
-// RSP1A parameter structs
-typedef struct 
-{
-    unsigned char rfNotchEnable;                              // default: 0
-    unsigned char rfDabNotchEnable;                           // default: 0
-} sdrplay_api_Rsp1aParamsT;
-
-typedef struct 
-{
-    unsigned char biasTEnable;                   // default: 0
-} sdrplay_api_Rsp1aTunerParamsT;
-
-#endif //SDRPLAY_API_RSP1A_H

artifacts/sdrplay-api-headers/v3_15/sdrplay_api_rsp2.h

@@ -1,35 +0,0 @@
-#ifndef SDRPLAY_API_RSP2_H
-#define SDRPLAY_API_RSP2_H
-
-#define RSPII_NUM_LNA_STATES         9
-#define RSPII_NUM_LNA_STATES_AMPORT  5
-#define RSPII_NUM_LNA_STATES_420MHZ  6
-
-// RSP2 parameter enums
-typedef enum
-{
-    sdrplay_api_Rsp2_ANTENNA_A = 5,
-    sdrplay_api_Rsp2_ANTENNA_B = 6,
-} sdrplay_api_Rsp2_AntennaSelectT;
-
-typedef enum
-{
-    sdrplay_api_Rsp2_AMPORT_1 = 1,
-    sdrplay_api_Rsp2_AMPORT_2 = 0,
-} sdrplay_api_Rsp2_AmPortSelectT;
-
-// RSP2 parameter structs
-typedef struct 
-{
-    unsigned char extRefOutputEn;                // default: 0
-} sdrplay_api_Rsp2ParamsT;
-
-typedef struct 
-{
-    unsigned char biasTEnable;                   // default: 0
-    sdrplay_api_Rsp2_AmPortSelectT amPortSel;    // default: sdrplay_api_Rsp2_AMPORT_2
-    sdrplay_api_Rsp2_AntennaSelectT antennaSel;  // default: sdrplay_api_Rsp2_ANTENNA_A
-    unsigned char rfNotchEnable;                 // default: 0
-} sdrplay_api_Rsp2TunerParamsT;
-
-#endif //SDRPLAY_API_RSP2_H

artifacts/sdrplay-api-headers/v3_15/sdrplay_api_rspDuo.h

@@ -1,47 +0,0 @@
-#ifndef SDRPLAY_API_RSPduo_H
-#define SDRPLAY_API_RSPduo_H
-
-#define RSPDUO_NUM_LNA_STATES         10
-#define RSPDUO_NUM_LNA_STATES_AMPORT  5
-#define RSPDUO_NUM_LNA_STATES_AM      7
-#define RSPDUO_NUM_LNA_STATES_LBAND   9
-
-// RSPduo parameter enums
-typedef enum
-{
-    sdrplay_api_RspDuoMode_Unknown      = 0,
-    sdrplay_api_RspDuoMode_Single_Tuner = 1,
-    sdrplay_api_RspDuoMode_Dual_Tuner   = 2,
-    sdrplay_api_RspDuoMode_Master       = 4,
-    sdrplay_api_RspDuoMode_Slave        = 8,
-} sdrplay_api_RspDuoModeT;
-
-typedef enum
-{
-    sdrplay_api_RspDuo_AMPORT_1 = 1,
-    sdrplay_api_RspDuo_AMPORT_2 = 0,
-} sdrplay_api_RspDuo_AmPortSelectT;
-
-// RSPduo parameter structs
-typedef struct 
-{
-    int extRefOutputEn;                             // default: 0
-} sdrplay_api_RspDuoParamsT;
-
-typedef struct 
-{
-   unsigned char resetGainUpdate;      // default: 0
-   unsigned char resetRfUpdate;        // default: 0
-} sdrplay_api_RspDuo_ResetSlaveFlagsT;
-
-typedef struct
-{
-    unsigned char biasTEnable;                      // default: 0
-    sdrplay_api_RspDuo_AmPortSelectT tuner1AmPortSel; // default: sdrplay_api_RspDuo_AMPORT_2
-    unsigned char tuner1AmNotchEnable;              // default: 0
-    unsigned char rfNotchEnable;                    // default: 0
-    unsigned char rfDabNotchEnable;                 // default: 0
-    sdrplay_api_RspDuo_ResetSlaveFlagsT resetSlaveFlags;
-} sdrplay_api_RspDuoTunerParamsT;
-
-#endif //SDRPLAY_API_RSPduo_H

artifacts/sdrplay-api-headers/v3_15/sdrplay_api_rspDx.h

@@ -1,46 +0,0 @@
-#ifndef SDRPLAY_API_RSPDX_H
-#define SDRPLAY_API_RSPDX_H
-
-#include "sdrplay_api_tuner.h"
-
-#define RSPDX_NUM_LNA_STATES               28   // Number of LNA states in all bands (except where defined differently below)
-#define RSPDX_NUM_LNA_STATES_AMPORT2_0_12  19   // Number of LNA states when using AM Port 2 between 0 and 12MHz
-#define RSPDX_NUM_LNA_STATES_AMPORT2_12_50 20   // Number of LNA states when using AM Port 2 between 12 and 50MHz
-#define RSPDX_NUM_LNA_STATES_AMPORT2_50_60 25   // Number of LNA states when using AM Port 2 between 50 and 60MHz
-#define RSPDX_NUM_LNA_STATES_VHF_BAND3     27   // Number of LNA states in VHF and Band3
-#define RSPDX_NUM_LNA_STATES_420MHZ        21   // Number of LNA states in 420MHz band
-#define RSPDX_NUM_LNA_STATES_LBAND         19   // Number of LNA states in L-band
-#define RSPDX_NUM_LNA_STATES_DX            22   // Number of LNA states in DX path
-
-// RSPdx parameter enums
-typedef enum
-{
-    sdrplay_api_RspDx_ANTENNA_A = 0,
-    sdrplay_api_RspDx_ANTENNA_B = 1,
-    sdrplay_api_RspDx_ANTENNA_C = 2,
-} sdrplay_api_RspDx_AntennaSelectT;
-
-typedef enum
-{
-    sdrplay_api_RspDx_HDRMODE_BW_0_200  = 0,
-    sdrplay_api_RspDx_HDRMODE_BW_0_500  = 1,
-    sdrplay_api_RspDx_HDRMODE_BW_1_200  = 2,
-    sdrplay_api_RspDx_HDRMODE_BW_1_700  = 3,
-} sdrplay_api_RspDx_HdrModeBwT;
-
-// RSPdx parameter structs
-typedef struct 
-{
-    unsigned char hdrEnable;                            // default: 0
-    unsigned char biasTEnable;                          // default: 0
-    sdrplay_api_RspDx_AntennaSelectT antennaSel;        // default: sdrplay_api_RspDx_ANTENNA_A
-    unsigned char rfNotchEnable;                        // default: 0
-    unsigned char rfDabNotchEnable;                     // default: 0
-} sdrplay_api_RspDxParamsT;
-
-typedef struct 
-{
-    sdrplay_api_RspDx_HdrModeBwT hdrBw;                 // default: sdrplay_api_RspDx_HDRMODE_BW_1_700
-} sdrplay_api_RspDxTunerParamsT;
-
-#endif //SDRPLAY_API_RSPDX_H

artifacts/sdrplay-api-headers/v3_15/sdrplay_api_rx_channel.h

@@ -1,21 +0,0 @@
-#ifndef SDRPLAY_API_RX_CHANNEL_H
-#define SDRPLAY_API_RX_CHANNEL_H
-
-#include "sdrplay_api_tuner.h"
-#include "sdrplay_api_control.h"
-#include "sdrplay_api_rsp1a.h"
-#include "sdrplay_api_rsp2.h"
-#include "sdrplay_api_rspDuo.h"
-#include "sdrplay_api_rspDx.h"
-
-typedef struct 
-{
-    sdrplay_api_TunerParamsT        tunerParams;    
-    sdrplay_api_ControlParamsT      ctrlParams;     
-    sdrplay_api_Rsp1aTunerParamsT   rsp1aTunerParams; 
-    sdrplay_api_Rsp2TunerParamsT    rsp2TunerParams; 
-    sdrplay_api_RspDuoTunerParamsT  rspDuoTunerParams;    
-    sdrplay_api_RspDxTunerParamsT   rspDxTunerParams;    
-} sdrplay_api_RxChannelParamsT;
-
-#endif //SDRPLAY_API_RX_CHANNEL_H

artifacts/sdrplay-api-headers/v3_15/sdrplay_api_tuner.h

@@ -1,93 +0,0 @@
-#ifndef SDRPLAY_API_TUNER_H
-#define SDRPLAY_API_TUNER_H
-
-#define MAX_BB_GR                         (59)
-
-// Tuner parameter enums
-typedef enum
-{
-    sdrplay_api_BW_Undefined = 0,
-    sdrplay_api_BW_0_200     = 200,
-    sdrplay_api_BW_0_300     = 300,
-    sdrplay_api_BW_0_600     = 600,
-    sdrplay_api_BW_1_536     = 1536,
-    sdrplay_api_BW_5_000     = 5000,
-    sdrplay_api_BW_6_000     = 6000,
-    sdrplay_api_BW_7_000     = 7000,
-    sdrplay_api_BW_8_000     = 8000
-} sdrplay_api_Bw_MHzT;
-
-typedef enum
-{
-    sdrplay_api_IF_Undefined = -1,
-    sdrplay_api_IF_Zero      = 0,
-    sdrplay_api_IF_0_450     = 450,
-    sdrplay_api_IF_1_620     = 1620,
-    sdrplay_api_IF_2_048     = 2048
-} sdrplay_api_If_kHzT;
-
-typedef enum
-{
-    sdrplay_api_LO_Undefined = 0,
-    sdrplay_api_LO_Auto      = 1,
-    sdrplay_api_LO_120MHz    = 2,
-    sdrplay_api_LO_144MHz    = 3,
-    sdrplay_api_LO_168MHz    = 4
-} sdrplay_api_LoModeT;
-
-typedef enum
-{
-    sdrplay_api_EXTENDED_MIN_GR = 0,
-    sdrplay_api_NORMAL_MIN_GR   = 20
-} sdrplay_api_MinGainReductionT;
-
-typedef enum
-{
-    sdrplay_api_Tuner_Neither  = 0,
-    sdrplay_api_Tuner_A        = 1,
-    sdrplay_api_Tuner_B        = 2,
-    sdrplay_api_Tuner_Both     = 3,
-} sdrplay_api_TunerSelectT;
-
-// Tuner parameter structs
-typedef struct
-{
-    float curr;
-    float max;
-    float min;
-} sdrplay_api_GainValuesT;
-
-typedef struct 
-{
-    int gRdB;                            // default: 50
-    unsigned char LNAstate;              // default: 0
-    unsigned char syncUpdate;            // default: 0
-    sdrplay_api_MinGainReductionT minGr; // default: sdrplay_api_NORMAL_MIN_GR
-    sdrplay_api_GainValuesT gainVals;    // output parameter
-} sdrplay_api_GainT;
-
-typedef struct 
-{
-    double rfHz;                         // default: 200000000.0
-    unsigned char syncUpdate;            // default: 0
-} sdrplay_api_RfFreqT;
-
-typedef struct 
-{
-    unsigned char dcCal;                 // default: 3 (Periodic mode)
-    unsigned char speedUp;               // default: 0 (No speedup)
-    int trackTime;                       // default: 1    (=> time in uSec = (72 * 3 * trackTime) / 24e6       = 9uSec)
-    int refreshRateTime;                 // default: 2048 (=> time in uSec = (72 * 3 * refreshRateTime) / 24e6 = 18432uSec)
-} sdrplay_api_DcOffsetTunerT;
-
-typedef struct 
-{
-    sdrplay_api_Bw_MHzT bwType;          // default: sdrplay_api_BW_0_200
-    sdrplay_api_If_kHzT ifType;          // default: sdrplay_api_IF_Zero
-    sdrplay_api_LoModeT loMode;          // default: sdrplay_api_LO_Auto
-    sdrplay_api_GainT gain;
-    sdrplay_api_RfFreqT rfFreq;
-    sdrplay_api_DcOffsetTunerT dcOffsetTuner;
-} sdrplay_api_TunerParamsT;
-
-#endif //SDRPLAY_API_TUNER_H

build.gradle

@@ -124,12 +124,16 @@ dependencies {
     implementation 'com.mpatric:mp3agic:0.9.1'
     implementation 'commons-io:commons-io:2.22.0'
     implementation 'eu.hansolo:charts:1.0.5'
-    implementation 'io.github.dsheirer:jbladerf:2.6.0' //bladeRF tuners - GitHub release, see settings.gradle
-    implementation 'io.github.dsheirer:jhydrasdr:1.1.3' //HydraSDR tuners - GitHub release, see settings.gradle
+    implementation 'io.github.dsheirer:jairspy:1.0.12.1' //Airspy tuners - GitHub release, see settings.gradle
+    implementation 'io.github.dsheirer:jairspyhf:1.8.1.1' //Airspy HF+ tuners - GitHub release, see settings.gradle
+    implementation 'io.github.dsheirer:jbladerf:2.6.0.1' //bladeRF tuners - GitHub release, see settings.gradle
+    implementation 'io.github.dsheirer:jhackrf:2026.01.3.1' //HackRF tuners - GitHub release, see settings.gradle
+    implementation 'io.github.dsheirer:jlibusb:1.0.30.1' //libusb and USB hotplug for the tuner libraries - GitHub release; not pulled in transitively
+    implementation 'io.github.dsheirer:jhydrasdr:1.1.4.1' //HydraSDR tuners - GitHub release, see settings.gradle
+    implementation 'io.github.dsheirer:jlimesdr:25.1.0.2' //LimeSDR tuners - GitHub release, see settings.gradle
+    implementation 'io.github.dsheirer:jrtl:1.4.0.2' //RTL-SDR tuners - GitHub release, see settings.gradle
+    implementation 'io.github.dsheirer:jsdrplay:3.15.3' //SDRplay RSP tuners - GitHub release, see settings.gradle
     implementation 'io.github.dsheirer:radio-reference-api:18.0.0'
-    implementation 'io.github.dsheirer:usb4java-native-libraries:1.3.3' //OSX & Windows aarch64 native libs
-    implementation 'io.github.dsheirer:usb4java:1.3.5' //Fork with Loader support for OSX Multi-Version
-    implementation 'javax.usb:usb-api:1.0.2'
     implementation 'net.coderazzi:tablefilter-swing:5.5.4'
     implementation 'org.apache.commons:commons-compress:1.28.0'
     implementation 'org.apache.commons:commons-lang3:3.20.0'
@@ -140,8 +144,6 @@ dependencies {
     implementation 'org.controlsfx:controlsfx:11.2.3'
     implementation 'org.rauschig:jarchivelib:1.2.0'
     implementation 'org.slf4j:slf4j-api:2.0.17'
-    implementation 'org.usb4java:libusb4java:1.3.0'
-    implementation 'org.usb4java:usb4java-javax:1.3.0'
     implementation 'pl.edu.icm:JLargeArrays:1.6'
 }
 
@@ -165,8 +167,7 @@ def jvmArgsWindows =
          '--enable-preview', //Project Panama Vector API is still in incubator
          '--enable-native-access=ALL-UNNAMED', //Suppress unsafe warnings for FFM API Foreign Memory calls
          '--enable-native-access=javafx.graphics', //JDK24 - suppress restricted java.lang.System calls
-         '--sun-misc-unsafe-memory-access=allow', //JDK24 - suppress sun.misc.Unsafe::allocateMemory warning
-         '-Djava.library.path=c:\\Program Files\\SDRplay\\API\\x64'] //SDRPlay API library path
+         '--sun-misc-unsafe-memory-access=allow'] //JDK24 - suppress sun.misc.Unsafe::allocateMemory warning
 
 /**
  * JVM Arguments for running the application on Linux.
@@ -177,7 +178,7 @@ def jvmArgsLinux =
          '--enable-preview', //Project Panama Vector & Foreign Function APIs remain in incubator
          '--sun-misc-unsafe-memory-access=allow', //JDK24 - suppress sun.misc.Unsafe::allocateMemory warning
          '--enable-native-access=javafx.graphics', //JDK24 - suppress restricted java.lang.System calls
-         '--enable-native-access=ALL-UNNAMED'] //SDRPlay API library path
+         '--enable-native-access=ALL-UNNAMED'] //Suppress warnings for FFM API native calls (tuner libraries)
 
 application {
     mainClass = "io.github.dsheirer.gui.SDRTrunk"

gradle.properties

@@ -28,4 +28,4 @@
 # tag name, specifically the dashes inserted before and after the alpha/beta labels.
 # See: https://github.com/DSheirer/sdrtrunk/issues/1651
 
-projectVersion=0.6.2-beta-1
+projectVersion=1.0.0-beta-1

settings.gradle

@@ -9,6 +9,47 @@ dependencyResolutionManagement {
         mavenCentral()
         maven { url 'https://jitpack.io' }
 
+        //jAirspy is published as a GitHub release, with the native libraries for all platforms in the jar
+        ivy {
+            url = 'https://github.com/DSheirer/jAirspy/releases/download'
+            patternLayout { artifact 'v[revision]/[artifact]-[revision].[ext]' }
+            metadataSources { artifact() }
+            content { includeModule 'io.github.dsheirer', 'jairspy' }
+        }
+
+        //jAirspyHF is published as a GitHub release, with the native libraries for all platforms in the jar
+        ivy {
+            url = 'https://github.com/DSheirer/jAirspyHF/releases/download'
+            patternLayout { artifact 'v[revision]/[artifact]-[revision].[ext]' }
+            metadataSources { artifact() }
+            content { includeModule 'io.github.dsheirer', 'jairspyhf' }
+        }
+
+        //jRTL is published as a GitHub release, with the native libraries for all platforms in the jar
+        ivy {
+            url = 'https://github.com/DSheirer/jRTL/releases/download'
+            patternLayout { artifact 'v[revision]/[artifact]-[revision].[ext]' }
+            metadataSources { artifact() }
+            content { includeModule 'io.github.dsheirer', 'jrtl' }
+        }
+
+        //jlibusb is published as a GitHub release, with libusb for all platforms in the jar.  Tuner libraries built on
+        //jlibusb (jAirspy, jAirspyHF, jBladeRF, jHackRF, jHydraSDR, jLimeSDR, jRTL) load their native library next to its libusb, so the process shares one copy.
+        ivy {
+            url = 'https://github.com/DSheirer/jlibusb/releases/download'
+            patternLayout { artifact 'v[revision]/[artifact]-[revision].[ext]' }
+            metadataSources { artifact() }
+            content { includeModule 'io.github.dsheirer', 'jlibusb' }
+        }
+
+        //jHackRF is published as a GitHub release, with the native libraries for all platforms in the jar
+        ivy {
+            url = 'https://github.com/DSheirer/jHackRF/releases/download'
+            patternLayout { artifact 'v[revision]/[artifact]-[revision].[ext]' }
+            metadataSources { artifact() }
+            content { includeModule 'io.github.dsheirer', 'jhackrf' }
+        }
+
         //jHydraSDR is published as a GitHub release, with the native libraries for all platforms in the jar
         ivy {
             url = 'https://github.com/DSheirer/jHydraSDR/releases/download'
@@ -17,6 +58,23 @@ dependencyResolutionManagement {
             content { includeModule 'io.github.dsheirer', 'jhydrasdr' }
         }
 
+        //jLimeSDR is published as a GitHub release, with the native libraries for all platforms in the jar
+        ivy {
+            url = 'https://github.com/DSheirer/jLimeSDR/releases/download'
+            patternLayout { artifact 'v[revision]/[artifact]-[revision].[ext]' }
+            metadataSources { artifact() }
+            content { includeModule 'io.github.dsheirer', 'jlimesdr' }
+        }
+
+        //jsdrplay is published as a GitHub release.  The jar does not contain the SDRplay API native library, which
+        //users install separately from sdrplay.com
+        ivy {
+            url = 'https://github.com/DSheirer/jsdrplay/releases/download'
+            patternLayout { artifact 'v[revision]/[artifact]-[revision].[ext]' }
+            metadataSources { artifact() }
+            content { includeModule 'io.github.dsheirer', 'jsdrplay' }
+        }
+
         //jBladeRF is published as a GitHub release, with the native libraries for all platforms in the jar
         ivy {
             url = 'https://github.com/DSheirer/jBladeRF/releases/download'

src/main/java/io/github/dsheirer/audio/AbstractAudioModule.java

@@ -35,7 +35,7 @@ import org.slf4j.LoggerFactory;
 public abstract class AbstractAudioModule extends Module implements IAudioSegmentProvider, IdentifierUpdateListener
 {
     private final static Logger mLog = LoggerFactory.getLogger(AbstractAudioModule.class);
-    public static final long DEFAULT_SEGMENT_AUDIO_SAMPLE_LENGTH = 60 * 8000; // 1 minute @ 8kHz
+    public static final long DEFAULT_MAX_SEGMENT_LENGTH_MILLIS = 60_000; // 1 minute
     public static final int DEFAULT_TIMESLOT = 0;
     private final int mMaxSegmentAudioSampleLength;
     private Listener<AudioSegment> mAudioSegmentListener;
@@ -51,12 +51,12 @@ public abstract class AbstractAudioModule extends Module implements IAudioSegmen
      * Constructs an abstract audio module
      *
      * @param aliasList for aliasing identifiers
-     * @param maxSegmentAudioSampleLength in milliseconds
+     * @param maxSegmentLengthMillis maximum audio segment length in milliseconds
      */
-    public AbstractAudioModule(AliasList aliasList, int timeslot, long maxSegmentAudioSampleLength)
+    public AbstractAudioModule(AliasList aliasList, int timeslot, long maxSegmentLengthMillis)
     {
         mAliasList = aliasList;
-        mMaxSegmentAudioSampleLength = (int)(maxSegmentAudioSampleLength * 8); //Convert milliseconds to samples
+        mMaxSegmentAudioSampleLength = (int)(maxSegmentLengthMillis * 8); //Convert milliseconds to samples
         mTimeslot = timeslot;
         mIdentifierCollection = new MutableIdentifierCollection(getTimeslot());
         mIdentifierUpdateNotificationBroadcaster.addListener(mIdentifierCollection);
@@ -67,7 +67,7 @@ public abstract class AbstractAudioModule extends Module implements IAudioSegmen
      */
     public AbstractAudioModule(AliasList aliasList)
     {
-        this(aliasList, DEFAULT_TIMESLOT, DEFAULT_SEGMENT_AUDIO_SAMPLE_LENGTH);
+        this(aliasList, DEFAULT_TIMESLOT, DEFAULT_MAX_SEGMENT_LENGTH_MILLIS);
     }
 
     /**

src/main/java/io/github/dsheirer/audio/codec/mbe/JmbeAudioModule.java

@@ -59,7 +59,7 @@ public abstract class JmbeAudioModule extends AbstractAudioModule implements Lis
 
     public JmbeAudioModule(UserPreferences userPreferences, AliasList aliasList, int timeslot)
     {
-        super(aliasList, timeslot, DEFAULT_SEGMENT_AUDIO_SAMPLE_LENGTH);
+        super(aliasList, timeslot, DEFAULT_MAX_SEGMENT_LENGTH_MILLIS);
         mUserPreferences = userPreferences;
         MyEventBus.getGlobalEventBus().register(this);
         loadConverter();

src/main/java/io/github/dsheirer/audio/playback/AudioChannel.java

@@ -46,6 +46,12 @@ public class AudioChannel implements Listener<IdentifierUpdateNotification>
      * sample rate.
      */
     public static final int SAMPLES_PER_INTERVAL = 160;
+    /**
+     * Quantity of consecutive intervals without new audio (1 second) before an incomplete audio segment is treated as
+     * stalled and abandoned.  An audio segment is delivered once to a single channel, so abandoning a segment that is
+     * still live loses the rest of the call.  This has to tolerate decoder gaps, such as a missed P25 LDU (180 ms).
+     */
+    static final int MAX_STALLED_INTERVALS = 50;
     private static final Logger LOGGER = LoggerFactory.getLogger(AudioChannel.class);
     private final AudioBuffer mAudioBuffer = new AudioBuffer();
     private final Broadcaster<AudioEvent> mAudioEventBroadcaster = new Broadcaster<>();
@@ -225,7 +231,7 @@ public class AudioChannel implements Listener<IdentifierUpdateNotification>
         }
 
         //Dispose completed/fully-played audio segments and segments that have stalled/failed to progress
-        if(mCurrentAudioSegment != null && ((mNoAudioFromSegmentIntervalCount >= 6) ||
+        if(mCurrentAudioSegment != null && ((mNoAudioFromSegmentIntervalCount >= MAX_STALLED_INTERVALS) ||
           (mCurrentAudioSegment.isComplete() && (mCurrentBufferIndex >= mCurrentAudioSegment.getAudioBufferCount()))))
         {
             disposeCurrentAudioSegment();
@@ -401,6 +407,24 @@ public class AudioChannel implements Listener<IdentifierUpdateNotification>
         return mAudioSegmentQueue.isEmpty();
     }
 
+    /**
+     * Next audio segment queued for playback, without removing it from the queue.
+     * @return queued audio segment or null if the queue is empty.
+     */
+    AudioSegment peekQueuedAudioSegment()
+    {
+        return mAudioSegmentQueue.peek();
+    }
+
+    /**
+     * Removes the next audio segment from the queue, transferring it (and its consumer count) to the caller.
+     * @return queued audio segment or null if the queue is empty.
+     */
+    AudioSegment pollQueuedAudioSegment()
+    {
+        return mAudioSegmentQueue.poll();
+    }
+
     /**
      * Schedules the audio segment for playback.  The audio segment user count should already be incremented by the
      * calling entity.
@@ -475,6 +499,7 @@ public class AudioChannel implements Listener<IdentifierUpdateNotification>
         }
 
         mCurrentBufferIndex = -1;
+        mNoAudioFromSegmentIntervalCount = 0;
     }
 
     /**

src/main/java/io/github/dsheirer/audio/playback/AudioPlaybackManager.java

@@ -173,6 +173,7 @@ public class AudioPlaybackManager implements Listener<AudioSegment>, IAudioContr
         {
             Iterator<AudioSegment> it = mAudioSegments.iterator();
             AudioSegment audioSegment;
+            List<AudioSegment> displaced = new ArrayList<>();
 
             //Remove any audio segments flagged as do not monitor.  Don't remove completed segments yet, because
             //we want to give them a brief chance at playback.  Automatically assign linked audio segments to the
@@ -200,6 +201,16 @@ public class AudioPlaybackManager implements Listener<AudioSegment>, IAudioContr
                                 if(audioOutput.isLinkedTo(audioSegment))
                                 {
                                     it.remove();
+
+                                    //Linked audio continues the current call, so it goes ahead of anything queued
+                                    AudioSegment queued = audioOutput.pollQueuedAudioSegment();
+
+                                    while(queued != null)
+                                    {
+                                        displaced.add(queued);
+                                        queued = audioOutput.pollQueuedAudioSegment();
+                                    }
+
                                     audioOutput.play(audioSegment);
                                 }
                             }
@@ -212,6 +223,8 @@ public class AudioPlaybackManager implements Listener<AudioSegment>, IAudioContr
                 }
             }
 
+            mAudioSegments.addAll(displaced);
+
             //Sort audio segments by playback priority and assign to empty audio outputs
             if(!mAudioSegments.isEmpty() && mAudioOutput != null)
             {
@@ -232,6 +245,8 @@ public class AudioPlaybackManager implements Listener<AudioSegment>, IAudioContr
                             }
                         }
                     }
+
+                    replaceLowerPriorityQueuedSegments(mAudioSegments, mAudioOutput.getAudioProvider().getAudioChannels());
                 }
                 finally
                 {
@@ -255,6 +270,40 @@ public class AudioPlaybackManager implements Listener<AudioSegment>, IAudioContr
         }
     }
 
+    /**
+     * Swaps audio segments queued on the audio channels for waiting audio segments that have a higher playback priority,
+     * so that a segment queued behind the current playback can't hold a higher priority segment out of the channel.
+     * Audio that is currently playing is not interrupted.  Displaced segments are returned to the waiting list.
+     *
+     * @param waiting audio segments, sorted by playback priority.
+     * @param audioChannels to evaluate.
+     */
+    static void replaceLowerPriorityQueuedSegments(List<AudioSegment> waiting, List<AudioChannel> audioChannels)
+    {
+        for(AudioChannel audioChannel: audioChannels)
+        {
+            if(waiting.isEmpty())
+            {
+                return;
+            }
+
+            AudioSegment queued = audioChannel.peekQueuedAudioSegment();
+
+            if(queued != null &&
+               waiting.getFirst().monitorPriorityProperty().get() < queued.monitorPriorityProperty().get())
+            {
+                //The audio thread may have taken the queued segment since the peek, so only return what we removed.
+                queued = audioChannel.pollQueuedAudioSegment();
+                audioChannel.play(waiting.removeFirst());
+
+                if(queued != null)
+                {
+                    waiting.add(queued);
+                }
+            }
+        }
+    }
+
     public void dispose()
     {
         MyEventBus.getGlobalEventBus().unregister(this);

src/main/java/io/github/dsheirer/audio/playback/AudioProvider.java

@@ -30,6 +30,16 @@ import javax.sound.sampled.AudioFormat;
  */
 public abstract class AudioProvider
 {
+    /**
+     * Converts the audio sample to a 16-bit PCM sample, limiting out of range values instead of allowing them to wrap.
+     * @param sample in range -1.0 to 1.0
+     * @return PCM sample
+     */
+    protected static short toPcm(float sample)
+    {
+        return (short)(Math.clamp(sample, -1.0f, 1.0f) * Short.MAX_VALUE);
+    }
+
     /**
      * Audio format for this provider
      */

src/main/java/io/github/dsheirer/audio/playback/AudioProviderMono.java

@@ -77,7 +77,7 @@ public class AudioProviderMono extends AudioProvider
 
         for(int x = 0; x < AudioChannel.SAMPLES_PER_INTERVAL; x++)
         {
-            shortBuffer.put((short) (audio[x] * Short.MAX_VALUE));
+            shortBuffer.put(toPcm(audio[x]));
         }
 
         return buffer;

src/main/java/io/github/dsheirer/audio/playback/AudioProviderMultiChannel.java

@@ -108,7 +108,7 @@ public class AudioProviderMultiChannel extends AudioProvider
         {
             for(int channelNumber = 0; channelNumber < mAudioChannels.size(); channelNumber++)
             {
-                shortBuffer.put((short)(samples[channelNumber][sampleCounter] * Short.MAX_VALUE));
+                shortBuffer.put(toPcm(samples[channelNumber][sampleCounter]));
             }
         }
 

src/main/java/io/github/dsheirer/audio/playback/AudioProviderStereo.java

@@ -102,8 +102,8 @@ public class AudioProviderStereo extends AudioProvider
 
         for(int x = 0; x < AudioChannel.SAMPLES_PER_INTERVAL; x++)
         {
-            shortBuffer.put((short)(left[x] * Short.MAX_VALUE));
-            shortBuffer.put((short)(right[x] * Short.MAX_VALUE));
+            shortBuffer.put(toPcm(left[x]));
+            shortBuffer.put(toPcm(right[x]));
         }
 
         return buffer;

src/main/java/io/github/dsheirer/buffer/airspy/AirspyHfNativeBuffer.java

@@ -1,132 +0,0 @@
-/*
- * *****************************************************************************
- * Copyright (C) 2014-2025 Dennis Sheirer
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- * ****************************************************************************
- */
-
-package io.github.dsheirer.buffer.airspy;
-
-import io.github.dsheirer.buffer.AbstractNativeBuffer;
-import io.github.dsheirer.sample.complex.ComplexSamples;
-import io.github.dsheirer.sample.complex.InterleavedComplexSamples;
-import java.util.Iterator;
-
-/**
- * Native buffer implementation for Airspy HF+ & Discovery tuners.
- */
-public class AirspyHfNativeBuffer extends AbstractNativeBuffer
-{
-    public static final float SCALE = 1.0f / 32768.0f;
-    private short[] mInterleavedSamples;
-    private float mAverageDc;
-
-    /**
-     * Constructs an instance.
-     * @param timestamp of the first sample of the buffer
-     * @param interleavedSamples pairs of 16-bit complex samples.
-     */
-    public AirspyHfNativeBuffer(long timestamp, float samplesPerMillisecond, float averageDc, short[] interleavedSamples)
-    {
-        super(timestamp, samplesPerMillisecond);
-        mInterleavedSamples = interleavedSamples;
-        mAverageDc = averageDc;
-    }
-
-    @Override
-    public Iterator<ComplexSamples> iterator()
-    {
-        return new IteratorComplexSamples();
-    }
-
-    @Override
-    public Iterator<InterleavedComplexSamples> iteratorInterleaved()
-    {
-        return new IteratorInterleaved();
-    }
-
-    @Override
-    public int sampleCount()
-    {
-        return mInterleavedSamples.length / 2;
-    }
-
-    /**
-     * Scalar implementation of complex samples buffer iterator
-     */
-    public class IteratorComplexSamples implements Iterator<ComplexSamples>
-    {
-        private boolean mHasNext = true;
-
-        @Override
-        public boolean hasNext()
-        {
-            return mHasNext;
-        }
-
-        @Override
-        public ComplexSamples next()
-        {
-            int length = mInterleavedSamples.length / 2;
-            float[] i = new float[length];
-            float[] q = new float[length];
-
-            int index = 0;
-
-            for(int x = 0; x < mInterleavedSamples.length; x += 2)
-            {
-                index = x / 2;
-                //Native ordering is in Q, I, Q, I ... reverse it to I, Q, I, Q
-                i[index] = (mInterleavedSamples[x + 1] * SCALE) - mAverageDc;
-                q[index] = (mInterleavedSamples[x] * SCALE) - mAverageDc;
-            }
-
-            mHasNext = false;
-
-            return new ComplexSamples(i, q, getTimestamp());
-        }
-    }
-
-    /**
-     * Scalar implementation of interleaved sample buffer iterator.
-     */
-    public class IteratorInterleaved implements Iterator<InterleavedComplexSamples>
-    {
-        private boolean mHasNext = true;
-
-        @Override
-        public boolean hasNext()
-        {
-            return mHasNext;
-        }
-
-        @Override
-        public InterleavedComplexSamples next()
-        {
-            float[] samples = new float[mInterleavedSamples.length];
-
-            for(int x = 0; x < mInterleavedSamples.length; x += 2)
-            {
-                //Native ordering is in Q, I, Q, I ... reverse it to I, Q, I, Q
-                samples[x] = (mInterleavedSamples[x + 1] * SCALE) - mAverageDc;
-                samples[x + 1] = (mInterleavedSamples[x] * SCALE) - mAverageDc;
-            }
-
-            mHasNext = false;
-
-            return new InterleavedComplexSamples(samples, getTimestamp());
-        }
-    }
-}

src/main/java/io/github/dsheirer/buffer/airspy/AirspyHfNativeBufferFactory.java

@@ -1,83 +0,0 @@
-/*
- * *****************************************************************************
- * Copyright (C) 2014-2025 Dennis Sheirer
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- * ****************************************************************************
- */
-
-package io.github.dsheirer.buffer.airspy;
-
-import io.github.dsheirer.buffer.AbstractNativeBufferFactory;
-import io.github.dsheirer.buffer.DcCorrectionManager;
-import io.github.dsheirer.buffer.INativeBuffer;
-import java.nio.ByteBuffer;
-import java.nio.ByteOrder;
-import java.nio.ShortBuffer;
-
-/**
- * Airspy HF+ native buffer factory.
- *
- * Note: the tuner provides 1024 samples in each transfer where samples are 16-bit interleaved complex.
- */
-public class AirspyHfNativeBufferFactory extends AbstractNativeBufferFactory
-{
-    private DcCorrectionManager mDcCorrectionManager = new DcCorrectionManager();
-
-    /**
-     * Constructs an instance
-     */
-    public AirspyHfNativeBufferFactory()
-    {
-    }
-
-    /**
-     * Converts the samples byte buffer into a native buffer and calculates DC offset
-     * @param samples byte array copied from native memory
-     * @param timestamp of the samples
-     * @return constructed native buffer
-     */
-    @Override
-    public INativeBuffer getBuffer(ByteBuffer samples, long timestamp)
-    {
-        ShortBuffer shortBuffer = samples.order(ByteOrder.LITTLE_ENDIAN).asShortBuffer();
-        short[] converted = new short[shortBuffer.capacity()];
-        shortBuffer.get(converted);
-
-        if(mDcCorrectionManager.shouldCalculateDc())
-        {
-            calculateDc(converted);
-        }
-
-        return new AirspyHfNativeBuffer(timestamp, getSamplesPerMillisecond(), mDcCorrectionManager.getAverageDc(), converted);
-    }
-
-    /**
-     * Calculates the average DC in the sample stream so that it can be subtracted from the samples when the
-     * native buffer is used.
-     * @param samples containing DC offset
-     */
-    private void calculateDc(short[] samples)
-    {
-        float dcAccumulator = 0;
-
-        for(short sample: samples)
-        {
-            dcAccumulator += sample;
-        }
-
-        dcAccumulator /= samples.length;
-        mDcCorrectionManager.adjust(dcAccumulator * AirspyHfNativeBuffer.SCALE);
-    }
-}

src/main/java/io/github/dsheirer/buffer/sample/SampleBufferIterator.java

@@ -1,119 +0,0 @@
-/*
- * *****************************************************************************
- * Copyright (C) 2014-2025 Dennis Sheirer
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- * ****************************************************************************
- */
-
-package io.github.dsheirer.buffer.sample;
-
-import io.github.dsheirer.dsp.filter.hilbert.HilbertTransform;
-import java.util.Iterator;
-
-/**
- * Base complex samples iterator for raw sample buffers.  Incorporates a Hilbert transform filter
- * for converting the real sample array to complex samples.
- * @param <T> either ComplexSamples or InterleavedComplexSamples
- */
-public abstract class SampleBufferIterator<T> implements Iterator<T>
-{
-    protected static final float SCALE_SIGNED_12_BIT_TO_FLOAT = 1.0f / 2048.0f;
-    protected static final int FRAGMENT_SIZE = 4096;
-    protected static final float[] COEFFICIENTS =
-            HilbertTransform.convertHalfBandToHilbert(HilbertTransform.HALF_BAND_FILTER_47_TAP);
-
-    public static final int I_OVERLAP = 11;
-    public static final int Q_OVERLAP = 23;
-
-    protected float[] mIBuffer = new float[FRAGMENT_SIZE + I_OVERLAP];
-    protected float[] mQBuffer = new float[FRAGMENT_SIZE + Q_OVERLAP];
-    protected short[] mSamples;
-    protected int mSamplesPointer = 0;
-    protected float mAverageDc;
-    private long mTimestamp;
-    private float mSamplesPerMillisecond;
-
-    /**
-     * Constructs an instance
-     * @param samples from the tuner.
-     * @param residualI samples from previous buffer
-     * @param residualQ samples from previous buffer
-     * @param averageDc as measured
-     * @param timestamp of the buffer
-     * @param samplesPerMillisecond to calculate sub-buffer fragment timestamps
-     */
-    public SampleBufferIterator(short[] samples, short[] residualI, short[] residualQ, float averageDc, long timestamp,
-                                float samplesPerMillisecond)
-    {
-        if(residualI.length != I_OVERLAP || residualQ.length != Q_OVERLAP)
-        {
-            throw new IllegalArgumentException("Residual I length [" + residualI.length +
-                    "] must be " + I_OVERLAP + " and Residual Q length [" + residualQ.length +
-                    "] must be " + Q_OVERLAP);
-        }
-
-        int requiredInterval = FRAGMENT_SIZE * 2; //requires 4 bytes (2 samples) per fragment
-
-        if(samples.length % requiredInterval != 0)
-        {
-            throw new IllegalArgumentException("Samples short array length [" + mSamples.length +
-                    "]must be an integer multiple of " + requiredInterval);
-        }
-
-        mAverageDc = averageDc;
-        mSamples = samples;
-        mTimestamp = timestamp;
-        mSamplesPerMillisecond = samplesPerMillisecond;
-
-        //Transfer and scale the residual I & Q samples from the previous buffer
-        for(int i = 0; i < residualI.length; i++)
-        {
-            mIBuffer[i] = scale(residualI[i], averageDc);
-        }
-
-        for(int q = 0; q < residualQ.length; q++)
-        {
-            mQBuffer[q] = scale(residualQ[q], averageDc);
-        }
-    }
-
-    /**
-     * Calculates the timestamp for a samples buffer fragment based on where it is extracted from relative to the
-     * native buffer starting timestamp.
-     * @param samplesPointer for the start of the fragment.  Note: this value will be divided by 2 to account for I/Q sample pairs.
-     * @return timestamp adjusted to the fragment or sub-buffer start sample.
-     */
-    protected long getFragmentTimestamp(int samplesPointer)
-    {
-        return mTimestamp + (long)(samplesPointer / 2 / mSamplesPerMillisecond);
-    }
-
-    @Override
-    public boolean hasNext()
-    {
-        return mSamplesPointer < mSamples.length;
-    }
-
-    /**
-     * Scales the short sample value to a 12-bit floating point and subtracts the average DC offset
-     * @param value to scale
-     * @param averageDc detected
-     * @return scaled and normalized sample
-     */
-    public static float scale(short value, float averageDc)
-    {
-        return ((float)value - 2048) * SCALE_SIGNED_12_BIT_TO_FLOAT - averageDc;
-    }
-}

src/main/java/io/github/dsheirer/buffer/sample/SampleBufferIteratorScalar.java

@@ -1,98 +0,0 @@
-/*
- * *****************************************************************************
- * Copyright (C) 2014-2025 Dennis Sheirer
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- * ****************************************************************************
- */
-
-package io.github.dsheirer.buffer.sample;
-
-import io.github.dsheirer.sample.complex.ComplexSamples;
-import java.util.Arrays;
-
-/**
- * Scalar implementation for non-packed native buffers
- */
-public class SampleBufferIteratorScalar extends SampleBufferIterator<ComplexSamples>
-{
-    /**
-     * Constructs an instance
-     *
-     * @param samples from the device, either packed or unpacked.
-     * @param residualI samples from last buffer
-     * @param residualQ samples from last buffer
-     * @param averageDc measured
-     * @param timestamp of the buffer
-     * @param samplesPerMillisecond to calculate sub-buffer fragment timestamps
-     */
-    public SampleBufferIteratorScalar(short[] samples, short[] residualI, short[] residualQ, float averageDc, long timestamp, float samplesPerMillisecond)
-    {
-        super(samples, residualI, residualQ, averageDc, timestamp, samplesPerMillisecond);
-    }
-
-    @Override
-    public ComplexSamples next()
-    {
-        if(mSamplesPointer >= mSamples.length)
-        {
-            throw new IllegalStateException("End of buffer exceeded");
-        }
-
-        long timestamp = getFragmentTimestamp(mSamplesPointer);
-
-        int offset = mSamplesPointer;
-
-        for(int x = 0; x < FRAGMENT_SIZE; x++)
-        {
-            mIBuffer[x + I_OVERLAP] = scale(mSamples[offset++], mAverageDc);
-            mQBuffer[x + Q_OVERLAP] = scale(mSamples[offset++], mAverageDc);
-        }
-
-        mSamplesPointer = offset;
-
-        //The i line is a simple delay line, so we'll just copy those as a new array here.
-        float[] i = Arrays.copyOf(mIBuffer, FRAGMENT_SIZE);
-        float[] q = new float[FRAGMENT_SIZE];
-
-        float accumulator;
-
-        for(int x = 0; x < FRAGMENT_SIZE; x++)
-        {
-            accumulator = 0;
-
-            for(int tap = 0; tap < COEFFICIENTS.length; tap++)
-            {
-                accumulator += COEFFICIENTS[tap] * mQBuffer[x + tap];
-            }
-
-            //Perform FS/2 frequency translation on final filtered values ... multiply sequence by 1, -1, etc.
-            if(x % 2 == 0)
-            {
-                q[x] = accumulator;
-            }
-            else
-            {
-                i[x] = -i[x];
-                q[x] = -accumulator;
-            }
-        }
-
-        //Copy residual end samples to beginning of buffers for the next iteration
-        System.arraycopy(mIBuffer, FRAGMENT_SIZE, mIBuffer, 0, I_OVERLAP);
-        System.arraycopy(mQBuffer, FRAGMENT_SIZE, mQBuffer, 0, Q_OVERLAP);
-
-        return new ComplexSamples(i, q, timestamp);
-    }
-}

src/main/java/io/github/dsheirer/buffer/sample/SampleBufferIteratorVector128Bits.java

@@ -1,128 +0,0 @@
-/*
- * *****************************************************************************
- * Copyright (C) 2014-2025 Dennis Sheirer
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- * ****************************************************************************
- */
-
-package io.github.dsheirer.buffer.sample;
-
-import io.github.dsheirer.sample.complex.ComplexSamples;
-import java.util.Arrays;
-import jdk.incubator.vector.FloatVector;
-import jdk.incubator.vector.VectorOperators;
-import jdk.incubator.vector.VectorSpecies;
-
-/**
- * Vector SIMD implementation for non-packed native buffers
- */
-public class SampleBufferIteratorVector128Bits extends SampleBufferIterator<ComplexSamples>
-{
-    private static final VectorSpecies<Float> VECTOR_SPECIES = FloatVector.SPECIES_128;
-
-    /**
-     * Constructs an instance
-     *
-     * @param samples from the device, either packed or unpacked.
-     * @param residualI samples from last buffer
-     * @param residualQ samples from last buffer
-     * @param averageDc measured
-     * @param timestamp of the buffer
-     * @param samplesPerMillisecond to calculate sub-buffer fragment timestamps
-     */
-    public SampleBufferIteratorVector128Bits(short[] samples, short[] residualI, short[] residualQ, float averageDc,
-                                             long timestamp, float samplesPerMillisecond)
-    {
-        super(samples, residualI, residualQ, averageDc, timestamp, samplesPerMillisecond);
-    }
-
-    @Override
-    public ComplexSamples next()
-    {
-        if(mSamplesPointer >= mSamples.length)
-        {
-            throw new IllegalStateException("End of buffer exceeded");
-        }
-
-        long timestamp = getFragmentTimestamp(mSamplesPointer);
-        int offset = mSamplesPointer;
-        int fragmentPointer = 0;
-        float[] scaledSamples = new float[VECTOR_SPECIES.length()];
-
-        while(fragmentPointer < FRAGMENT_SIZE)
-        {
-            for(int y = 0; y < VECTOR_SPECIES.length(); y++)
-            {
-                //Couldn't figure out an easy way to load as a short vector and recast to a float vector
-                scaledSamples[y] = mSamples[offset++];
-            }
-
-            //SIMD scaling operation
-            FloatVector.fromArray(VECTOR_SPECIES, scaledSamples, 0)
-                    .sub(2048.0f)
-                    .mul(SCALE_SIGNED_12_BIT_TO_FLOAT)
-                    .sub(mAverageDc)
-                    .intoArray(scaledSamples, 0);
-
-            for(int y = 0; y < VECTOR_SPECIES.length(); y += 2)
-            {
-                mIBuffer[fragmentPointer + I_OVERLAP] = scaledSamples[y];
-                mQBuffer[fragmentPointer++ + Q_OVERLAP] = scaledSamples[y + 1];
-            }
-        }
-
-        mSamplesPointer = offset;
-
-        //The i line is a simple delay line, so we'll just copy those as a new array here.
-        float[] i = Arrays.copyOf(mIBuffer, FRAGMENT_SIZE);
-        float[] q = new float[FRAGMENT_SIZE];
-
-        FloatVector accumulator;
-        FloatVector f1 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 0);
-        FloatVector f2 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 4);
-        FloatVector f3 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 8);
-        FloatVector f4 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 12);
-        FloatVector f5 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 16);
-        FloatVector f6 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 20);
-
-        for(int x = 0; x < FRAGMENT_SIZE; x++)
-        {
-            accumulator = FloatVector.zero(VECTOR_SPECIES);
-            accumulator = f1.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x), accumulator);
-            accumulator = f2.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 4), accumulator);
-            accumulator = f3.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 8), accumulator);
-            accumulator = f4.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 12), accumulator);
-            accumulator = f5.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 16), accumulator);
-            accumulator = f6.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 20), accumulator);
-
-            //Perform FS/2 frequency translation on final filtered values ... multiply sequence by 1, -1, etc.
-            if(x % 2 == 0)
-            {
-                q[x] = accumulator.reduceLanes(VectorOperators.ADD);
-            }
-            else
-            {
-                i[x] = -i[x];
-                q[x] = -accumulator.reduceLanes(VectorOperators.ADD);
-            }
-        }
-
-        //Copy residual end samples to beginning of buffers for the next iteration
-        System.arraycopy(mIBuffer, FRAGMENT_SIZE, mIBuffer, 0, I_OVERLAP);
-        System.arraycopy(mQBuffer, FRAGMENT_SIZE, mQBuffer, 0, Q_OVERLAP);
-
-        return new ComplexSamples(i, q, timestamp);
-    }
-}

src/main/java/io/github/dsheirer/buffer/sample/SampleBufferIteratorVector256Bits.java

@@ -1,122 +0,0 @@
-/*
- * *****************************************************************************
- * Copyright (C) 2014-2025 Dennis Sheirer
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- * ****************************************************************************
- */
-
-package io.github.dsheirer.buffer.sample;
-
-import io.github.dsheirer.sample.complex.ComplexSamples;
-import java.util.Arrays;
-import jdk.incubator.vector.FloatVector;
-import jdk.incubator.vector.VectorOperators;
-import jdk.incubator.vector.VectorSpecies;
-
-/**
- * Vector SIMD implementation for non-packed native buffers
- */
-public class SampleBufferIteratorVector256Bits extends SampleBufferIterator<ComplexSamples>
-{
-    private static final VectorSpecies<Float> VECTOR_SPECIES = FloatVector.SPECIES_256;
-
-    /**
-     * Constructs an instance
-     *
-     * @param samples from the device, either packed or unpacked.
-     * @param residualI samples from last buffer
-     * @param residualQ samples from last buffer
-     * @param averageDc measured
-     * @param timestamp of the buffer
-     * @param samplesPerMillisecond to calculate sub-buffer fragment timestamps
-     */
-    public SampleBufferIteratorVector256Bits(short[] samples, short[] residualI, short[] residualQ, float averageDc,
-                                             long timestamp, float samplesPerMillisecond)
-    {
-        super(samples, residualI, residualQ, averageDc, timestamp, samplesPerMillisecond);
-    }
-
-    @Override
-    public ComplexSamples next()
-    {
-        if(mSamplesPointer >= mSamples.length)
-        {
-            throw new IllegalStateException("End of buffer exceeded");
-        }
-
-        long timestamp = getFragmentTimestamp(mSamplesPointer);
-        int offset = mSamplesPointer;
-        int fragmentPointer = 0;
-        float[] scaledSamples = new float[VECTOR_SPECIES.length()];
-
-        while(fragmentPointer < FRAGMENT_SIZE)
-        {
-            for(int y = 0; y < VECTOR_SPECIES.length(); y++)
-            {
-                //Couldn't figure out an easy way to load as a short vector and recast to a float vector
-                scaledSamples[y] = mSamples[offset++];
-            }
-
-            //SIMD scaling operation
-            FloatVector.fromArray(VECTOR_SPECIES, scaledSamples, 0)
-                    .sub(2048.0f)
-                    .mul(SCALE_SIGNED_12_BIT_TO_FLOAT)
-                    .sub(mAverageDc)
-                    .intoArray(scaledSamples, 0);
-
-            for(int y = 0; y < VECTOR_SPECIES.length(); y += 2)
-            {
-                mIBuffer[fragmentPointer + I_OVERLAP] = scaledSamples[y];
-                mQBuffer[fragmentPointer++ + Q_OVERLAP] = scaledSamples[y + 1];
-            }
-        }
-
-        mSamplesPointer = offset;
-
-        //The i line is a simple delay line, so we'll just copy those as a new array here.
-        float[] i = Arrays.copyOf(mIBuffer, FRAGMENT_SIZE);
-        float[] q = new float[FRAGMENT_SIZE];
-
-        FloatVector accumulator;
-        FloatVector f1 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 0);
-        FloatVector f2 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 8);
-        FloatVector f3 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 16);
-
-        for(int x = 0; x < FRAGMENT_SIZE; x++)
-        {
-            accumulator = FloatVector.zero(VECTOR_SPECIES);
-            accumulator = f1.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x), accumulator);
-            accumulator = f2.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 8), accumulator);
-            accumulator = f3.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 16), accumulator);
-
-            //Perform FS/2 frequency translation on final filtered values ... multiply sequence by 1, -1, etc.
-            if(x % 2 == 0)
-            {
-                q[x] = accumulator.reduceLanes(VectorOperators.ADD);
-            }
-            else
-            {
-                i[x] = -i[x];
-                q[x] = -accumulator.reduceLanes(VectorOperators.ADD);
-            }
-        }
-
-        //Copy residual end samples to beginning of buffers for the next iteration
-        System.arraycopy(mIBuffer, FRAGMENT_SIZE, mIBuffer, 0, I_OVERLAP);
-        System.arraycopy(mQBuffer, FRAGMENT_SIZE, mQBuffer, 0, Q_OVERLAP);
-
-        return new ComplexSamples(i, q, timestamp);
-    }
-}

src/main/java/io/github/dsheirer/buffer/sample/SampleBufferIteratorVector512Bits.java

@@ -1,125 +0,0 @@
-/*
- * *****************************************************************************
- * Copyright (C) 2014-2025 Dennis Sheirer
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- * ****************************************************************************
- */
-
-package io.github.dsheirer.buffer.sample;
-
-import io.github.dsheirer.sample.complex.ComplexSamples;
-import java.util.Arrays;
-import jdk.incubator.vector.FloatVector;
-import jdk.incubator.vector.VectorOperators;
-import jdk.incubator.vector.VectorSpecies;
-
-/**
- * Vector SIMD implementation for non-packed native buffers
- */
-public class SampleBufferIteratorVector512Bits extends SampleBufferIterator<ComplexSamples>
-{
-    private static final VectorSpecies<Float> VECTOR_SPECIES = FloatVector.SPECIES_512;
-    private float[] mFilterPart2;
-
-    /**
-     * Constructs an instance
-     *
-     * @param samples from the device, either packed or unpacked.
-     * @param residualI samples from last buffer
-     * @param residualQ samples from last buffer
-     * @param averageDc measured
-     * @param timestamp of the buffer
-     * @param samplesPerMillisecond to calculate sub-buffer fragment timestamps
-     */
-    public SampleBufferIteratorVector512Bits(short[] samples, short[] residualI, short[] residualQ, float averageDc,
-                                             long timestamp, float samplesPerMillisecond)
-    {
-        super(samples, residualI, residualQ, averageDc, timestamp, samplesPerMillisecond);
-        //Arrange the last 8 taps of the filter into the higher indices of an array to align for SIMD
-        mFilterPart2 = new float[16];
-        System.arraycopy(COEFFICIENTS, 16, mFilterPart2, 8, 8);
-    }
-
-    @Override
-    public ComplexSamples next()
-    {
-        if(mSamplesPointer >= mSamples.length)
-        {
-            throw new IllegalStateException("End of buffer exceeded");
-        }
-
-        long timestamp = getFragmentTimestamp(mSamplesPointer);
-
-        int offset = mSamplesPointer;
-        int fragmentPointer = 0;
-        float[] scaledSamples = new float[VECTOR_SPECIES.length()];
-
-        while(fragmentPointer < FRAGMENT_SIZE)
-        {
-            for(int y = 0; y < VECTOR_SPECIES.length(); y++)
-            {
-                //Couldn't figure out an easy way to load as a short vector and recast to a float vector
-                scaledSamples[y] = mSamples[offset++];
-            }
-
-            //SIMD scaling operation
-            FloatVector.fromArray(VECTOR_SPECIES, scaledSamples, 0)
-                    .sub(2048.0f)
-                    .mul(SCALE_SIGNED_12_BIT_TO_FLOAT)
-                    .sub(mAverageDc)
-                    .intoArray(scaledSamples, 0);
-
-            for(int y = 0; y < VECTOR_SPECIES.length(); y += 2)
-            {
-                mIBuffer[fragmentPointer + I_OVERLAP] = scaledSamples[y];
-                mQBuffer[fragmentPointer++ + Q_OVERLAP] = scaledSamples[y + 1];
-            }
-        }
-
-        mSamplesPointer = offset;
-
-        //The i line is a simple delay line, so we'll just copy those as a new array here.
-        float[] i = Arrays.copyOf(mIBuffer, FRAGMENT_SIZE);
-        float[] q = new float[FRAGMENT_SIZE];
-
-        FloatVector accumulator;
-        FloatVector f1 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 0);
-        FloatVector f2 = FloatVector.fromArray(VECTOR_SPECIES, mFilterPart2, 0);
-
-        for(int x = 0; x < FRAGMENT_SIZE; x++)
-        {
-            accumulator = FloatVector.zero(VECTOR_SPECIES);
-            accumulator = f1.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x), accumulator);
-            accumulator = f2.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 8), accumulator);
-
-            //Perform FS/2 frequency translation on final filtered values ... multiply sequence by 1, -1, etc.
-            if(x % 2 == 0)
-            {
-                q[x] = accumulator.reduceLanes(VectorOperators.ADD);
-            }
-            else
-            {
-                i[x] = -i[x];
-                q[x] = -accumulator.reduceLanes(VectorOperators.ADD);
-            }
-        }
-
-        //Copy residual end samples to beginning of buffers for the next iteration
-        System.arraycopy(mIBuffer, FRAGMENT_SIZE, mIBuffer, 0, I_OVERLAP);
-        System.arraycopy(mQBuffer, FRAGMENT_SIZE, mQBuffer, 0, Q_OVERLAP);
-
-        return new ComplexSamples(i, q, timestamp);
-    }
-}

src/main/java/io/github/dsheirer/buffer/sample/SampleBufferIteratorVector64Bits.java

@@ -1,141 +0,0 @@
-/*
- * *****************************************************************************
- * Copyright (C) 2014-2025 Dennis Sheirer
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- * ****************************************************************************
- */
-
-package io.github.dsheirer.buffer.sample;
-
-import io.github.dsheirer.sample.complex.ComplexSamples;
-import java.util.Arrays;
-import jdk.incubator.vector.FloatVector;
-import jdk.incubator.vector.VectorOperators;
-import jdk.incubator.vector.VectorSpecies;
-
-/**
- * Vector SIMD implementation for non-packed native buffers
- */
-public class SampleBufferIteratorVector64Bits extends SampleBufferIterator<ComplexSamples>
-{
-    private static final VectorSpecies<Float> VECTOR_SPECIES = FloatVector.SPECIES_64;
-
-    /**
-     * Constructs an instance
-     *
-     * @param samples from the device, either packed or unpacked.
-     * @param residualI samples from last buffer
-     * @param residualQ samples from last buffer
-     * @param averageDc measured
-     * @param timestamp of the buffer
-     * @param samplesPerMillisecond to calculate sub-buffer fragment timestamps
-     */
-    public SampleBufferIteratorVector64Bits(short[] samples, short[] residualI, short[] residualQ, float averageDc,
-                                            long timestamp, float samplesPerMillisecond)
-    {
-        super(samples, residualI, residualQ, averageDc, timestamp, samplesPerMillisecond);
-    }
-
-    @Override
-    public ComplexSamples next()
-    {
-        if(mSamplesPointer >= mSamples.length)
-        {
-            throw new IllegalStateException("End of buffer exceeded");
-        }
-
-        long timestamp = getFragmentTimestamp(mSamplesPointer);
-
-        int offset = mSamplesPointer;
-        int fragmentPointer = 0;
-        float[] scaledSamples = new float[VECTOR_SPECIES.length()];
-
-        while(fragmentPointer < FRAGMENT_SIZE)
-        {
-            for(int y = 0; y < VECTOR_SPECIES.length(); y++)
-            {
-                //Couldn't figure out an easy way to load as a short vector and recast to a float vector
-                scaledSamples[y] = mSamples[offset++];
-            }
-
-            //SIMD scaling operation
-            FloatVector.fromArray(VECTOR_SPECIES, scaledSamples, 0)
-                    .sub(2048.0f)
-                    .mul(SCALE_SIGNED_12_BIT_TO_FLOAT)
-                    .sub(mAverageDc)
-                    .intoArray(scaledSamples, 0);
-
-            for(int y = 0; y < VECTOR_SPECIES.length(); y += 2)
-            {
-                mIBuffer[fragmentPointer + I_OVERLAP] = scaledSamples[y];
-                mQBuffer[fragmentPointer++ + Q_OVERLAP] = scaledSamples[y + 1];
-            }
-        }
-
-        mSamplesPointer = offset;
-
-        //The i line is a simple delay line, so we'll just copy those as a new array here.
-        float[] i = Arrays.copyOf(mIBuffer, FRAGMENT_SIZE);
-        float[] q = new float[FRAGMENT_SIZE];
-
-        FloatVector accumulator;
-        FloatVector f1 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 0);
-        FloatVector f2 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 2);
-        FloatVector f3 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 4);
-        FloatVector f4 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 6);
-        FloatVector f5 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 8);
-        FloatVector f6 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 10);
-        FloatVector f7 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 12);
-        FloatVector f8 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 14);
-        FloatVector f9 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 16);
-        FloatVector f10 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 18);
-        FloatVector f11 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 20);
-        FloatVector f12 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 22);
-
-        for(int x = 0; x < FRAGMENT_SIZE; x++)
-        {
-            accumulator = FloatVector.zero(VECTOR_SPECIES);
-            accumulator = f1.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x), accumulator);
-            accumulator = f2.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 2), accumulator);
-            accumulator = f3.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 4), accumulator);
-            accumulator = f4.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 6), accumulator);
-            accumulator = f5.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 8), accumulator);
-            accumulator = f6.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 10), accumulator);
-            accumulator = f7.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 12), accumulator);
-            accumulator = f8.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 14), accumulator);
-            accumulator = f9.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 16), accumulator);
-            accumulator = f10.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 18), accumulator);
-            accumulator = f11.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 20), accumulator);
-            accumulator = f12.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 22), accumulator);
-
-            //Perform FS/2 frequency translation on final filtered values ... multiply sequence by 1, -1, etc.
-            if(x % 2 == 0)
-            {
-                q[x] = accumulator.reduceLanes(VectorOperators.ADD);
-            }
-            else
-            {
-                i[x] = -i[x];
-                q[x] = -accumulator.reduceLanes(VectorOperators.ADD);
-            }
-        }
-
-        //Copy residual end samples to beginning of buffers for the next iteration
-        System.arraycopy(mIBuffer, FRAGMENT_SIZE, mIBuffer, 0, I_OVERLAP);
-        System.arraycopy(mQBuffer, FRAGMENT_SIZE, mQBuffer, 0, Q_OVERLAP);
-
-        return new ComplexSamples(i, q, timestamp);
-    }
-}

src/main/java/io/github/dsheirer/buffer/sample/SampleInterleavedBufferIteratorScalar.java

@@ -1,96 +0,0 @@
-/*
- * *****************************************************************************
- * Copyright (C) 2014-2025 Dennis Sheirer
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- * ****************************************************************************
- */
-
-package io.github.dsheirer.buffer.sample;
-
-import io.github.dsheirer.sample.complex.InterleavedComplexSamples;
-
-/**
- * Scalar implementation for non-packed native buffers
- */
-public class SampleInterleavedBufferIteratorScalar extends SampleBufferIterator<InterleavedComplexSamples>
-{
-    /**
-     * Constructs an instance
-     *
-     * @param samples from the device, either packed or unpacked.
-     * @param residualI samples from last buffer
-     * @param residualQ samples from last buffer
-     * @param averageDc measured
-     * @param timestamp of the buffer
-     * @param samplesPerMillisecond to calculate sub-buffer fragment timestamps
-     */
-    public SampleInterleavedBufferIteratorScalar(short[] samples, short[] residualI, short[] residualQ, float averageDc,
-                                                 long timestamp, float samplesPerMillisecond)
-    {
-        super(samples, residualI, residualQ, averageDc, timestamp, samplesPerMillisecond);
-    }
-
-    @Override
-    public InterleavedComplexSamples next()
-    {
-        if(mSamplesPointer >= mSamples.length)
-        {
-            throw new IllegalStateException("End of buffer exceeded");
-        }
-
-        long timestamp = getFragmentTimestamp(mSamplesPointer);
-        int offset = mSamplesPointer;
-
-        for(int x = 0; x < FRAGMENT_SIZE; x++)
-        {
-            mIBuffer[x + I_OVERLAP] = scale(mSamples[offset++], mAverageDc);
-            mQBuffer[x + Q_OVERLAP] = scale(mSamples[offset++], mAverageDc);
-        }
-
-        mSamplesPointer = offset;
-
-        float[] samples = new float[FRAGMENT_SIZE * 2];
-
-        float accumulator;
-
-        for(int x = 0; x < FRAGMENT_SIZE; x++)
-        {
-            accumulator = 0;
-
-            for(int tap = 0; tap < COEFFICIENTS.length; tap++)
-            {
-                accumulator += COEFFICIENTS[tap] * mQBuffer[x + tap];
-            }
-
-            //Perform FS/2 frequency translation on final filtered values ... multiply sequence by 1, -1, etc.
-            if(x % 2 == 0)
-            {
-                samples[2 * x] = mIBuffer[x];
-                samples[2 * x + 1] = accumulator;
-            }
-            else
-            {
-                samples[2 * x] = -mIBuffer[x];
-                samples[2 * x + 1] = -accumulator;
-            }
-        }
-
-        //Copy residual end samples to beginning of buffers for the next iteration
-        System.arraycopy(mIBuffer, FRAGMENT_SIZE, mIBuffer, 0, I_OVERLAP);
-        System.arraycopy(mQBuffer, FRAGMENT_SIZE, mQBuffer, 0, Q_OVERLAP);
-
-        return new InterleavedComplexSamples(samples, timestamp);
-    }
-}

src/main/java/io/github/dsheirer/buffer/sample/SampleInterleavedBufferIteratorVector128Bits.java

@@ -1,125 +0,0 @@
-/*
- * *****************************************************************************
- * Copyright (C) 2014-2025 Dennis Sheirer
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- * ****************************************************************************
- */
-
-package io.github.dsheirer.buffer.sample;
-
-import io.github.dsheirer.sample.complex.InterleavedComplexSamples;
-import jdk.incubator.vector.FloatVector;
-import jdk.incubator.vector.VectorOperators;
-import jdk.incubator.vector.VectorSpecies;
-
-/**
- * Vector SIMD implementation for non-packed native buffers
- */
-public class SampleInterleavedBufferIteratorVector128Bits extends SampleBufferIterator<InterleavedComplexSamples>
-{
-    private static final VectorSpecies<Float> VECTOR_SPECIES = FloatVector.SPECIES_128;
-
-    /**
-     * Constructs an instance
-     *
-     * @param samples from the device, either packed or unpacked.
-     * @param residualI samples from last buffer
-     * @param residualQ samples from last buffer
-     * @param averageDc measured
-     * @param timestamp of the buffer
-     * @param samplesPerMillisecond to calculate sub-buffer fragment timestamps
-     */
-    public SampleInterleavedBufferIteratorVector128Bits(short[] samples, short[] residualI, short[] residualQ, float averageDc,
-                                                        long timestamp, float samplesPerMillisecond)
-    {
-        super(samples, residualI, residualQ, averageDc, timestamp, samplesPerMillisecond);
-    }
-
-    @Override
-    public InterleavedComplexSamples next()
-    {
-        if(mSamplesPointer >= mSamples.length)
-        {
-            throw new IllegalStateException("End of buffer exceeded");
-        }
-
-        long timestamp = getFragmentTimestamp(mSamplesPointer);
-        int offset = mSamplesPointer;
-        int fragmentPointer = 0;
-        float[] scaledSamples = new float[VECTOR_SPECIES.length()];
-
-        while(fragmentPointer < FRAGMENT_SIZE)
-        {
-            for(int y = 0; y < VECTOR_SPECIES.length(); y++)
-            {
-                //Couldn't figure out an easy way to load as a short vector and recast to a float vector
-                scaledSamples[y] = mSamples[offset++];
-            }
-
-            //SIMD scaling operation
-            FloatVector.fromArray(VECTOR_SPECIES, scaledSamples, 0)
-                    .sub(2048.0f)
-                    .mul(SCALE_SIGNED_12_BIT_TO_FLOAT)
-                    .sub(mAverageDc)
-                    .intoArray(scaledSamples, 0);
-
-            for(int y = 0; y < VECTOR_SPECIES.length(); y += 2)
-            {
-                mIBuffer[fragmentPointer + I_OVERLAP] = scaledSamples[y];
-                mQBuffer[fragmentPointer++ + Q_OVERLAP] = scaledSamples[y + 1];
-            }
-        }
-
-        mSamplesPointer = offset;
-
-        float[] samples = new float[FRAGMENT_SIZE * 2];
-        FloatVector accumulator;
-        FloatVector f1 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 0);
-        FloatVector f2 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 4);
-        FloatVector f3 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 8);
-        FloatVector f4 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 12);
-        FloatVector f5 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 16);
-        FloatVector f6 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 20);
-
-        for(int x = 0; x < FRAGMENT_SIZE; x++)
-        {
-            accumulator = FloatVector.zero(VECTOR_SPECIES);
-            accumulator = f1.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x), accumulator);
-            accumulator = f2.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 4), accumulator);
-            accumulator = f3.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 8), accumulator);
-            accumulator = f4.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 12), accumulator);
-            accumulator = f5.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 16), accumulator);
-            accumulator = f6.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 20), accumulator);
-
-            //Perform FS/2 frequency translation on final filtered values ... multiply sequence by 1, -1, etc.
-            if(x % 2 == 0)
-            {
-                samples[2 * x] = mIBuffer[x];
-                samples[2 * x + 1] = accumulator.reduceLanes(VectorOperators.ADD);
-            }
-            else
-            {
-                samples[2 * x] = -mIBuffer[x];
-                samples[2 * x + 1] = -accumulator.reduceLanes(VectorOperators.ADD);
-            }
-        }
-
-        //Copy residual end samples to beginning of buffers for the next iteration
-        System.arraycopy(mIBuffer, FRAGMENT_SIZE, mIBuffer, 0, I_OVERLAP);
-        System.arraycopy(mQBuffer, FRAGMENT_SIZE, mQBuffer, 0, Q_OVERLAP);
-
-        return new InterleavedComplexSamples(samples, timestamp);
-    }
-}

src/main/java/io/github/dsheirer/buffer/sample/SampleInterleavedBufferIteratorVector256Bits.java

@@ -1,119 +0,0 @@
-/*
- * *****************************************************************************
- * Copyright (C) 2014-2025 Dennis Sheirer
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- * ****************************************************************************
- */
-
-package io.github.dsheirer.buffer.sample;
-
-import io.github.dsheirer.sample.complex.InterleavedComplexSamples;
-import jdk.incubator.vector.FloatVector;
-import jdk.incubator.vector.VectorOperators;
-import jdk.incubator.vector.VectorSpecies;
-
-/**
- * Vector SIMD implementation for non-packed native buffers
- */
-public class SampleInterleavedBufferIteratorVector256Bits extends SampleBufferIterator<InterleavedComplexSamples>
-{
-    private static final VectorSpecies<Float> VECTOR_SPECIES = FloatVector.SPECIES_256;
-
-    /**
-     * Constructs an instance
-     *
-     * @param samples from the device, either packed or unpacked.
-     * @param residualI samples from last buffer
-     * @param residualQ samples from last buffer
-     * @param averageDc measured
-     * @param timestamp of the buffer
-     * @param samplesPerMillisecond to calculate sub-buffer fragment timestamps
-     */
-    public SampleInterleavedBufferIteratorVector256Bits(short[] samples, short[] residualI, short[] residualQ, float averageDc,
-                                                        long timestamp, float samplesPerMillisecond)
-    {
-        super(samples, residualI, residualQ, averageDc, timestamp, samplesPerMillisecond);
-    }
-
-    @Override
-    public InterleavedComplexSamples next()
-    {
-        if(mSamplesPointer >= mSamples.length)
-        {
-            throw new IllegalStateException("End of buffer exceeded");
-        }
-
-        long timestamp = getFragmentTimestamp(mSamplesPointer);
-        int offset = mSamplesPointer;
-        int fragmentPointer = 0;
-        float[] scaledSamples = new float[VECTOR_SPECIES.length()];
-
-        while(fragmentPointer < FRAGMENT_SIZE)
-        {
-            for(int y = 0; y < VECTOR_SPECIES.length(); y++)
-            {
-                //Couldn't figure out an easy way to load as a short vector and recast to a float vector
-                scaledSamples[y] = mSamples[offset++];
-            }
-
-            //SIMD scaling operation
-            FloatVector.fromArray(VECTOR_SPECIES, scaledSamples, 0)
-                    .sub(2048.0f)
-                    .mul(SCALE_SIGNED_12_BIT_TO_FLOAT)
-                    .sub(mAverageDc)
-                    .intoArray(scaledSamples, 0);
-
-            for(int y = 0; y < VECTOR_SPECIES.length(); y += 2)
-            {
-                mIBuffer[fragmentPointer + I_OVERLAP] = scaledSamples[y];
-                mQBuffer[fragmentPointer++ + Q_OVERLAP] = scaledSamples[y + 1];
-            }
-        }
-
-        mSamplesPointer = offset;
-
-        float[] samples = new float[FRAGMENT_SIZE * 2];
-        FloatVector accumulator;
-        FloatVector f1 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 0);
-        FloatVector f2 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 8);
-        FloatVector f3 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 16);
-
-        for(int x = 0; x < FRAGMENT_SIZE; x++)
-        {
-            accumulator = FloatVector.zero(VECTOR_SPECIES);
-            accumulator = f1.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x), accumulator);
-            accumulator = f2.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 8), accumulator);
-            accumulator = f3.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 16), accumulator);
-
-            //Perform FS/2 frequency translation on final filtered values ... multiply sequence by 1, -1, etc.
-            if(x % 2 == 0)
-            {
-                samples[2 * x] = mIBuffer[x];
-                samples[2 * x + 1] = accumulator.reduceLanes(VectorOperators.ADD);
-            }
-            else
-            {
-                samples[2 * x] = -mIBuffer[x];
-                samples[2 * x + 1] = -accumulator.reduceLanes(VectorOperators.ADD);
-            }
-        }
-
-        //Copy residual end samples to beginning of buffers for the next iteration
-        System.arraycopy(mIBuffer, FRAGMENT_SIZE, mIBuffer, 0, I_OVERLAP);
-        System.arraycopy(mQBuffer, FRAGMENT_SIZE, mQBuffer, 0, Q_OVERLAP);
-
-        return new InterleavedComplexSamples(samples, timestamp);
-    }
-}

src/main/java/io/github/dsheirer/buffer/sample/SampleInterleavedBufferIteratorVector512Bits.java

@@ -1,122 +0,0 @@
-/*
- * *****************************************************************************
- * Copyright (C) 2014-2025 Dennis Sheirer
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- * ****************************************************************************
- */
-
-package io.github.dsheirer.buffer.sample;
-
-import io.github.dsheirer.sample.complex.InterleavedComplexSamples;
-import jdk.incubator.vector.FloatVector;
-import jdk.incubator.vector.VectorOperators;
-import jdk.incubator.vector.VectorSpecies;
-
-/**
- * Vector SIMD implementation for non-packed native buffers
- */
-public class SampleInterleavedBufferIteratorVector512Bits extends SampleBufferIterator<InterleavedComplexSamples>
-{
-    private static final VectorSpecies<Float> VECTOR_SPECIES = FloatVector.SPECIES_512;
-    private float[] mFilterPart2;
-
-    /**
-     * Constructs an instance
-     *
-     * @param samples from the device, either packed or unpacked.
-     * @param residualI samples from last buffer
-     * @param residualQ samples from last buffer
-     * @param averageDc measured
-     * @param timestamp of the buffer
-     * @param samplesPerMillisecond to calculate sub-buffer fragment timestamps
-     */
-    public SampleInterleavedBufferIteratorVector512Bits(short[] samples, short[] residualI, short[] residualQ, float averageDc,
-                                                        long timestamp, float samplesPerMillisecond)
-    {
-        super(samples, residualI, residualQ, averageDc, timestamp, samplesPerMillisecond);
-
-        //Arrange the last 8 taps of the filter into the higher indices of an array to align for SIMD
-        mFilterPart2 = new float[16];
-        System.arraycopy(COEFFICIENTS, 16, mFilterPart2, 8, 8);
-    }
-
-    @Override
-    public InterleavedComplexSamples next()
-    {
-        if(mSamplesPointer >= mSamples.length)
-        {
-            throw new IllegalStateException("End of buffer exceeded");
-        }
-
-        long timestamp = getFragmentTimestamp(mSamplesPointer);
-        int offset = mSamplesPointer;
-        int fragmentPointer = 0;
-        float[] scaledSamples = new float[VECTOR_SPECIES.length()];
-
-        while(fragmentPointer < FRAGMENT_SIZE)
-        {
-            for(int y = 0; y < VECTOR_SPECIES.length(); y++)
-            {
-                //Couldn't figure out an easy way to load as a short vector and recast to a float vector
-                scaledSamples[y] = mSamples[offset++];
-            }
-
-            //SIMD scaling operation
-            FloatVector.fromArray(VECTOR_SPECIES, scaledSamples, 0)
-                    .sub(2048.0f)
-                    .mul(SCALE_SIGNED_12_BIT_TO_FLOAT)
-                    .sub(mAverageDc)
-                    .intoArray(scaledSamples, 0);
-
-            for(int y = 0; y < VECTOR_SPECIES.length(); y += 2)
-            {
-                mIBuffer[fragmentPointer + I_OVERLAP] = scaledSamples[y];
-                mQBuffer[fragmentPointer++ + Q_OVERLAP] = scaledSamples[y + 1];
-            }
-        }
-
-        mSamplesPointer = offset;
-
-        float[] samples = new float[FRAGMENT_SIZE * 2];
-        FloatVector accumulator;
-        FloatVector f1 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 0);
-        FloatVector f2 = FloatVector.fromArray(VECTOR_SPECIES, mFilterPart2, 0);
-
-        for(int x = 0; x < FRAGMENT_SIZE; x++)
-        {
-            accumulator = FloatVector.zero(VECTOR_SPECIES);
-            accumulator = f1.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x), accumulator);
-            accumulator = f2.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 8), accumulator);
-
-            //Perform FS/2 frequency translation on final filtered values ... multiply sequence by 1, -1, etc.
-            if(x % 2 == 0)
-            {
-                samples[2 * x] = mIBuffer[x];
-                samples[2 * x + 1] = accumulator.reduceLanes(VectorOperators.ADD);
-            }
-            else
-            {
-                samples[2 * x] = -mIBuffer[x];
-                samples[2 * x + 1] = -accumulator.reduceLanes(VectorOperators.ADD);
-            }
-        }
-
-        //Copy residual end samples to beginning of buffers for the next iteration
-        System.arraycopy(mIBuffer, FRAGMENT_SIZE, mIBuffer, 0, I_OVERLAP);
-        System.arraycopy(mQBuffer, FRAGMENT_SIZE, mQBuffer, 0, Q_OVERLAP);
-
-        return new InterleavedComplexSamples(samples, timestamp);
-    }
-}

src/main/java/io/github/dsheirer/buffer/sample/SampleInterleavedBufferIteratorVector64Bits.java

@@ -1,137 +0,0 @@
-/*
- * *****************************************************************************
- * Copyright (C) 2014-2025 Dennis Sheirer
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- * ****************************************************************************
- */
-
-package io.github.dsheirer.buffer.sample;
-
-import io.github.dsheirer.sample.complex.InterleavedComplexSamples;
-import jdk.incubator.vector.FloatVector;
-import jdk.incubator.vector.VectorOperators;
-import jdk.incubator.vector.VectorSpecies;
-
-/**
- * Vector SIMD implementation for non-packed native buffers
- */
-public class SampleInterleavedBufferIteratorVector64Bits extends SampleBufferIterator<InterleavedComplexSamples>
-{
-    private static final VectorSpecies<Float> VECTOR_SPECIES = FloatVector.SPECIES_64;
-
-    /**
-     * Constructs an instance
-     *
-     * @param samples from the device, either packed or unpacked.
-     * @param residualI samples from last buffer
-     * @param residualQ samples from last buffer
-     * @param averageDc measured
-     * @param timestamp of the buffer
-     * @param samplesPerMillisecond to calculate sub-buffer fragment timestamps
-     */
-    public SampleInterleavedBufferIteratorVector64Bits(short[] samples, short[] residualI, short[] residualQ, float averageDc,
-                                                       long timestamp, float samplesPerMillisecond)
-    {
-        super(samples, residualI, residualQ, averageDc, timestamp, samplesPerMillisecond);
-    }
-
-    @Override
-    public InterleavedComplexSamples next()
-    {
-        if(mSamplesPointer >= mSamples.length)
-        {
-            throw new IllegalStateException("End of buffer exceeded");
-        }
-
-        long timestamp = getFragmentTimestamp(mSamplesPointer);
-        int offset = mSamplesPointer;
-        int fragmentPointer = 0;
-        float[] scaledSamples = new float[VECTOR_SPECIES.length()];
-
-        while(fragmentPointer < FRAGMENT_SIZE)
-        {
-            for(int y = 0; y < VECTOR_SPECIES.length(); y++)
-            {
-                //Couldn't figure out an easy way to load as a short vector and recast to a float vector
-                scaledSamples[y] = mSamples[offset++];
-            }
-
-            //SIMD scaling operation
-            FloatVector.fromArray(VECTOR_SPECIES, scaledSamples, 0)
-                    .sub(2048.0f)
-                    .mul(SCALE_SIGNED_12_BIT_TO_FLOAT)
-                    .sub(mAverageDc)
-                    .intoArray(scaledSamples, 0);
-
-            for(int y = 0; y < VECTOR_SPECIES.length(); y += 2)
-            {
-                mIBuffer[fragmentPointer + I_OVERLAP] = scaledSamples[y];
-                mQBuffer[fragmentPointer++ + Q_OVERLAP] = scaledSamples[y + 1];
-            }
-        }
-
-        mSamplesPointer = offset;
-
-        float[] samples = new float[FRAGMENT_SIZE * 2];
-        FloatVector accumulator;
-        FloatVector f1 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 0);
-        FloatVector f2 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 2);
-        FloatVector f3 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 4);
-        FloatVector f4 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 6);
-        FloatVector f5 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 8);
-        FloatVector f6 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 10);
-        FloatVector f7 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 12);
-        FloatVector f8 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 14);
-        FloatVector f9 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 16);
-        FloatVector f10 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 18);
-        FloatVector f11 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 20);
-        FloatVector f12 = FloatVector.fromArray(VECTOR_SPECIES, COEFFICIENTS, 22);
-
-        for(int x = 0; x < FRAGMENT_SIZE; x++)
-        {
-            accumulator = FloatVector.zero(VECTOR_SPECIES);
-            accumulator = f1.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x), accumulator);
-            accumulator = f2.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 2), accumulator);
-            accumulator = f3.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 4), accumulator);
-            accumulator = f4.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 6), accumulator);
-            accumulator = f5.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 8), accumulator);
-            accumulator = f6.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 10), accumulator);
-            accumulator = f7.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 12), accumulator);
-            accumulator = f8.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 14), accumulator);
-            accumulator = f9.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 16), accumulator);
-            accumulator = f10.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 18), accumulator);
-            accumulator = f11.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 20), accumulator);
-            accumulator = f12.fma(FloatVector.fromArray(VECTOR_SPECIES, mQBuffer, x + 22), accumulator);
-
-            //Perform FS/2 frequency translation on final filtered values ... multiply sequence by 1, -1, etc.
-            if(x % 2 == 0)
-            {
-                samples[2 * x] = mIBuffer[x];
-                samples[2 * x + 1] = accumulator.reduceLanes(VectorOperators.ADD);
-            }
-            else
-            {
-                samples[2 * x] = -mIBuffer[x];
-                samples[2 * x + 1] = -accumulator.reduceLanes(VectorOperators.ADD);
-            }
-        }
-
-        //Copy residual end samples to beginning of buffers for the next iteration
-        System.arraycopy(mIBuffer, FRAGMENT_SIZE, mIBuffer, 0, I_OVERLAP);
-        System.arraycopy(mQBuffer, FRAGMENT_SIZE, mQBuffer, 0, Q_OVERLAP);
-
-        return new InterleavedComplexSamples(samples, timestamp);
-    }
-}

src/main/java/io/github/dsheirer/buffer/sample/SampleNativeBuffer.java

@@ -1,103 +0,0 @@
-/*
- * *****************************************************************************
- * Copyright (C) 2014-2026 Dennis Sheirer
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- * ****************************************************************************
- */
-
-package io.github.dsheirer.buffer.sample;
-
-import io.github.dsheirer.buffer.AbstractNativeBuffer;
-import io.github.dsheirer.sample.complex.ComplexSamples;
-import io.github.dsheirer.sample.complex.InterleavedComplexSamples;
-import io.github.dsheirer.vector.calibrate.Implementation;
-import java.util.Iterator;
-
-/**
- * Native buffer scalar implementation for non-packed samples.
- */
-public class SampleNativeBuffer extends AbstractNativeBuffer
-{
-    private final short[] mSamples;
-    private final short[] mResidualI;
-    private final short[] mResidualQ;
-    private final float mAverageDc;
-    private final Implementation mInterleavedImplementation;
-    private final Implementation mNonInterleavedImplementation;
-
-    /**
-     * Constructs an instance
-     * @param samples (non-packed) from the device
-     * @param residualI samples from previous buffer
-     * @param residualQ samples from previous buffer
-     * @param averageDc measured
-     * @param timestamp of the buffer
-     * @param interleavedImplementation optimal, scalar vs vector SIMD
-     * @param nonInterleavedImplementation optimal, scalar vs vector SIMD
-     * @param samplesPerMillisecond used to calculate sub-buffer fragment timestamp offsets from the start of this buffer.
-     */
-    public SampleNativeBuffer(short[] samples, short[] residualI, short[] residualQ, float averageDc,
-                              long timestamp, Implementation interleavedImplementation,
-                              Implementation nonInterleavedImplementation, float samplesPerMillisecond)
-    {
-        super(timestamp, samplesPerMillisecond);
-
-        //Ensure we're an even multiple of the fragment size.  Typically, this will be 64k or 128k
-        if(samples.length % SampleBufferIterator.FRAGMENT_SIZE != 0)
-        {
-            throw new IllegalArgumentException("Samples short[] length [" + samples.length +
-                    "] must be an even multiple of " + SampleBufferIterator.FRAGMENT_SIZE);
-        }
-
-        mSamples = samples;
-        mResidualI = residualI;
-        mResidualQ = residualQ;
-        mAverageDc = averageDc;
-        mInterleavedImplementation = interleavedImplementation;
-        mNonInterleavedImplementation = nonInterleavedImplementation;
-    }
-
-    @Override
-    public int sampleCount()
-    {
-        return mSamples.length / 2;
-    }
-
-    @Override
-    public Iterator<ComplexSamples> iterator()
-    {
-        return switch(mNonInterleavedImplementation)
-        {
-            case VECTOR_SIMD_512 -> new SampleBufferIteratorVector512Bits(mSamples, mResidualI, mResidualQ, mAverageDc, getTimestamp(), getSamplesPerMillisecond());
-            case VECTOR_SIMD_256-> new SampleBufferIteratorVector256Bits(mSamples, mResidualI, mResidualQ, mAverageDc, getTimestamp(), getSamplesPerMillisecond());
-            case VECTOR_SIMD_128-> new SampleBufferIteratorVector128Bits(mSamples, mResidualI, mResidualQ, mAverageDc, getTimestamp(), getSamplesPerMillisecond());
-            case VECTOR_SIMD_64 ->new SampleBufferIteratorVector64Bits(mSamples, mResidualI, mResidualQ, mAverageDc, getTimestamp(), getSamplesPerMillisecond());
-            default -> new SampleBufferIteratorScalar(mSamples, mResidualI, mResidualQ, mAverageDc, getTimestamp(), getSamplesPerMillisecond());
-        };
-    }
-
-    @Override
-    public Iterator<InterleavedComplexSamples> iteratorInterleaved()
-    {
-        return switch(mInterleavedImplementation)
-        {
-            case VECTOR_SIMD_512 -> new SampleInterleavedBufferIteratorVector512Bits(mSamples, mResidualI, mResidualQ, mAverageDc, getTimestamp(), getSamplesPerMillisecond());
-            case VECTOR_SIMD_256-> new SampleInterleavedBufferIteratorVector256Bits(mSamples, mResidualI, mResidualQ, mAverageDc, getTimestamp(), getSamplesPerMillisecond());
-            case VECTOR_SIMD_128-> new SampleInterleavedBufferIteratorVector128Bits(mSamples, mResidualI, mResidualQ, mAverageDc, getTimestamp(), getSamplesPerMillisecond());
-            case VECTOR_SIMD_64 ->new SampleInterleavedBufferIteratorVector64Bits(mSamples, mResidualI, mResidualQ, mAverageDc, getTimestamp(), getSamplesPerMillisecond());
-            default -> new SampleInterleavedBufferIteratorScalar(mSamples, mResidualI, mResidualQ, mAverageDc, getTimestamp(), getSamplesPerMillisecond());
-        };
-    }
-}

src/main/java/io/github/dsheirer/buffer/sample/SampleNativeBufferFactory.java

@@ -1,135 +0,0 @@
-/*
- * *****************************************************************************
- * Copyright (C) 2014-2025 Dennis Sheirer
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- * ****************************************************************************
- */
-
-package io.github.dsheirer.buffer.sample;
-
-import io.github.dsheirer.buffer.AbstractNativeBufferFactory;
-import io.github.dsheirer.buffer.INativeBuffer;
-import io.github.dsheirer.vector.calibrate.CalibrationManager;
-import io.github.dsheirer.vector.calibrate.CalibrationType;
-import io.github.dsheirer.vector.calibrate.Implementation;
-import java.nio.ByteBuffer;
-import java.util.Arrays;
-
-/**
- * Implements a factory for creating SignedByteNativeBuffer instances
- */
-public class SampleNativeBufferFactory extends AbstractNativeBufferFactory
-{
-    private boolean mSamplePacking = false;
-    private short[] mResidualI = new short[SampleBufferIterator.I_OVERLAP];
-    private short[] mResidualQ = new short[SampleBufferIterator.Q_OVERLAP];
-    private ISampleConverter mConverter;
-    private Implementation mInterleavedIteratorImplementation;
-    private Implementation mNonInterleavedIteratorImplementation;
-
-    /**
-     * Constructs an instance
-     */
-    public SampleNativeBufferFactory()
-    {
-        updateConverter();
-
-        mInterleavedIteratorImplementation = CalibrationManager.getInstance()
-                .getImplementation(CalibrationType.SAMPLE_UNPACKED_INTERLEAVED_ITERATOR);
-        mNonInterleavedIteratorImplementation = CalibrationManager.getInstance()
-                .getImplementation(CalibrationType.SAMPLE_UNPACKED_ITERATOR);
-    }
-
-    /**
-     * Sample packing places two 12-bit samples into 3 bytes when enabled or
-     * places two 12-bit samples into 4 bytes when disabled.
-     *
-     * @param enabled
-     */
-    public void setSamplePacking(boolean enabled)
-    {
-        mSamplePacking = enabled;
-        updateConverter();
-    }
-
-    /**
-     * Creates an optimal sample converter instance.
-     */
-    private void updateConverter()
-    {
-        if(mSamplePacking)
-        {
-            if(!(mConverter instanceof ScalarPackedSampleConverter))
-            {
-                mConverter = new ScalarPackedSampleConverter();
-            }
-        }
-        else
-        {
-            Implementation implementation = CalibrationManager.getInstance().getImplementation(CalibrationType.SAMPLE_PACKED_CONVERTER);
-
-            if(implementation == Implementation.VECTOR_SIMD_PREFERRED)
-            {
-                if(!(mConverter instanceof VectorUnpackedSampleConverter))
-                {
-                    mConverter = new VectorUnpackedSampleConverter();
-                }
-            }
-            else
-            {
-                if(!(mConverter instanceof ScalarUnpackedSampleConverter))
-                {
-                    mConverter = new ScalarUnpackedSampleConverter();
-                }
-            }
-        }
-    }
-
-    @Override
-    public INativeBuffer getBuffer(ByteBuffer buffer, long timestamp)
-    {
-        short[] samples = mConverter.convert(buffer);
-
-        INativeBuffer nativeBuffer = new SampleNativeBuffer(samples,
-                Arrays.copyOf(mResidualI, mResidualI.length),
-                Arrays.copyOf(mResidualQ, mResidualQ.length), mConverter.getAverageDc(), timestamp,
-                mInterleavedIteratorImplementation, mNonInterleavedIteratorImplementation, getSamplesPerMillisecond());
-
-        extractResidual(samples);
-
-        return nativeBuffer;
-    }
-
-    /**
-     * Extracts the residual overlap samples needed for continuity in the Hilbert transform filter.
-     * @param samples to extract residual from
-     */
-    private void extractResidual(short[] samples)
-    {
-        int offset = samples.length - (SampleBufferIterator.I_OVERLAP * 2);
-
-        for(int i = 0; i < SampleBufferIterator.I_OVERLAP; i++)
-        {
-            mResidualI[i] = samples[offset + (2 * i)];
-        }
-
-        offset = samples.length - (SampleBufferIterator.Q_OVERLAP * 2) + 1;
-
-        for(int q = 0; q < SampleBufferIterator.Q_OVERLAP; q++)
-        {
-            mResidualQ[q] = samples[offset + (2 * q)];
-        }
-    }
-}

src/main/java/io/github/dsheirer/buffer/sample/ScalarPackedSampleConverter.java

@@ -1,120 +0,0 @@
-/*
- * *****************************************************************************
- * Copyright (C) 2014-2025 Dennis Sheirer
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- * ****************************************************************************
- */
-
-package io.github.dsheirer.buffer.sample;
-
-import io.github.dsheirer.buffer.DcCorrectionManager;
-import java.nio.ByteBuffer;
-
-/**
- * Scalar implementation of sample converter for un-packed samples.
- */
-public class ScalarPackedSampleConverter implements ISampleConverter
-{
-    /**
-     * Manages DC calculations and processing interval
-     */
-    private DcCorrectionManager mDcCalculationManager = new DcCorrectionManager();
-
-    @Override
-    public short[] convert(ByteBuffer buffer)
-    {
-        boolean shouldCalculateDc = mDcCalculationManager.shouldCalculateDc();
-
-        int offset = 0;
-        short sample;
-        short[] samples;
-        byte b1, b2, b3;
-
-        samples = new short[buffer.capacity() / 3 * 2];
-
-        if(shouldCalculateDc)
-        {
-            long dcAccumulator = 0;
-
-            for(int x = 0; x < samples.length; x += 2)
-            {
-                b1 = buffer.get(offset++);
-                b2 = buffer.get(offset++);
-                b3 = buffer.get(offset++);
-
-                sample = (short)(((b1 & 0xFF) << 4) | ((b2 & 0xF0) >> 4));
-                samples[x] = sample;
-                dcAccumulator += sample;
-
-                sample = (short)(((b2 & 0xF) << 8) | (b3 & 0xFF));
-                samples[x] = sample;
-                dcAccumulator += sample;
-            }
-
-            float averageDcNow = ((float)dcAccumulator / (float)samples.length) - 2048.0f;
-            averageDcNow *= SampleBufferIterator.SCALE_SIGNED_12_BIT_TO_FLOAT;
-            mDcCalculationManager.adjust(averageDcNow);
-        }
-        else
-        {
-            for(int x = 0; x < samples.length; x += 2)
-            {
-                b1 = buffer.get(offset++);
-                b2 = buffer.get(offset++);
-                b3 = buffer.get(offset++);
-
-                sample = (short)(((b1 & 0xFF) << 4) | ((b2 & 0xF0) >> 4));
-                samples[x] = sample;
-
-                sample = (short)(((b2 & 0xF) << 8) | (b3 & 0xFF));
-                samples[x] = sample;
-            }
-        }
-
-        return samples;
-    }
-
-    @Override
-    public float getAverageDc()
-    {
-        return mDcCalculationManager.getAverageDc();
-    }
-
-    public static void main(String[] args)
-    {
-        byte[] raw = new byte[262144];
-        ByteBuffer buffer = ByteBuffer.wrap(raw);
-
-        ScalarPackedSampleConverter scalar = new ScalarPackedSampleConverter();
-        VectorUnpackedSampleConverter vector = new VectorUnpackedSampleConverter();
-
-        long accumulator = 0;
-        int iterations = 1_000_000;
-
-        System.out.println("Starting ...");
-        long start = System.currentTimeMillis();
-        for(int count = 0; count < iterations; count++)
-        {
-//            short[] samples = scalar.convert(buffer);
-            short[] samples = vector.convert(buffer);
-            accumulator += samples[1];
-        }
-        long elapsed = System.currentTimeMillis() - start;
-
-        System.out.println("Accumulator: " + accumulator);
-        System.out.println("Elapsed: " + (elapsed / 1000.0f));
-        System.out.println("Finished");
-    }
-}

src/main/java/io/github/dsheirer/buffer/sample/ScalarUnpackedSampleConverter.java

@@ -1,83 +0,0 @@
-/*
- * *****************************************************************************
- * Copyright (C) 2014-2025 Dennis Sheirer
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- * ****************************************************************************
- */
-
-package io.github.dsheirer.buffer.sample;
-
-import io.github.dsheirer.buffer.DcCorrectionManager;
-import java.nio.ByteBuffer;
-
-/**
- * Scalar implementation of sample converter for un-packed samples.
- */
-public class ScalarUnpackedSampleConverter implements ISampleConverter
-{
-    /**
-     * Manages DC calculations and processing interval
-     */
-    private DcCorrectionManager mDcCalculationManager = new DcCorrectionManager();
-
-    @Override
-    public short[] convert(ByteBuffer buffer)
-    {
-        boolean shouldCalculateDc = mDcCalculationManager.shouldCalculateDc();
-
-        int offset = 0;
-        short sample;
-        short[] samples;
-        byte b1, b2;
-
-        samples = new short[buffer.capacity() / 2];
-
-        if(shouldCalculateDc)
-        {
-            long dcAccumulator = 0;
-
-            for(int x = 0; x < samples.length; x++)
-            {
-                b1 = buffer.get(offset++);
-                b2 = buffer.get(offset++);
-                sample = (short)(((b2 & 0x0F) << 8) | (b1 & 0xFF));
-                samples[x] = sample;
-                dcAccumulator += sample;
-            }
-
-            float averageDcNow = ((float)dcAccumulator / (float)samples.length) - 2048.0f;
-            averageDcNow *= SampleBufferIterator.SCALE_SIGNED_12_BIT_TO_FLOAT;
-            mDcCalculationManager.adjust(averageDcNow);
-        }
-        else
-        {
-            for(int x = 0; x < samples.length; x++)
-            {
-                b1 = buffer.get(offset++);
-                b2 = buffer.get(offset++);
-                sample = (short)(((b2 & 0x0F) << 8) | (b1 & 0xFF));
-                samples[x] = sample;
-            }
-        }
-
-        return samples;
-    }
-
-    @Override
-    public float getAverageDc()
-    {
-        return mDcCalculationManager.getAverageDc();
-    }
-}

src/main/java/io/github/dsheirer/buffer/sample/VectorUnpackedSampleConverter.java

@@ -1,129 +0,0 @@
-/*
- * *****************************************************************************
- * Copyright (C) 2014-2025 Dennis Sheirer
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- * ****************************************************************************
- */
-
-package io.github.dsheirer.buffer.sample;
-
-import io.github.dsheirer.buffer.DcCorrectionManager;
-import java.nio.ByteBuffer;
-import jdk.incubator.vector.ShortVector;
-import jdk.incubator.vector.VectorOperators;
-import jdk.incubator.vector.VectorSpecies;
-
-/**
- * Scalar implementation of sample converter for un-packed samples.
- */
-public class VectorUnpackedSampleConverter implements ISampleConverter
-{
-    private static final VectorSpecies<Short> VECTOR_SPECIES = ShortVector.SPECIES_PREFERRED;
-
-    /**
-     * Manages DC calculations and processing interval
-     */
-    private DcCorrectionManager mDcCalculationManager = new DcCorrectionManager();
-
-    @Override
-    public short[] convert(ByteBuffer buffer)
-    {
-        boolean shouldCalculateDc = mDcCalculationManager.shouldCalculateDc();
-
-        short sample;
-        short[] samples;
-        byte b1, b2;
-
-        samples = new short[buffer.capacity() / 2];
-
-        int bytesOffset;
-        int rawPointer = 0;
-        ShortVector vector;
-
-        int samplesOffset = 0;
-
-        short[] bytes1 = new short[VECTOR_SPECIES.length()];
-        short[] bytes2 = new short[VECTOR_SPECIES.length()];
-
-        if(shouldCalculateDc)
-        {
-            long dcAccumulator = 0;
-
-            for(; samplesOffset < VECTOR_SPECIES.loopBound(samples.length); samplesOffset += VECTOR_SPECIES.length())
-            {
-                bytesOffset = 0;
-
-                while(bytesOffset < VECTOR_SPECIES.length())
-                {
-                    bytes1[bytesOffset] = (short)(buffer.get(rawPointer++) & 0xFF);
-                    bytes2[bytesOffset++] = (short)(buffer.get(rawPointer++) & 0x0F);
-                }
-
-                vector = ShortVector.fromArray(VECTOR_SPECIES, bytes1, 0)
-                        .or(ShortVector.fromArray(VECTOR_SPECIES, bytes2, 0).lanewise(VectorOperators.LSHL, 8));
-                dcAccumulator += vector.reduceLanes(VectorOperators.ADD);
-                vector.intoArray(samples, samplesOffset);
-            }
-
-            for(; samplesOffset < samples.length; samplesOffset++)
-            {
-                b1 = buffer.get(rawPointer++);
-                b2 = buffer.get(rawPointer++);
-
-                sample = (short)(((b2 & 0x0F) << 8) | (b1 & 0xFF));
-                samples[samplesOffset] = sample;
-                dcAccumulator += sample;
-            }
-
-            float averageDcNow = ((float)dcAccumulator / (float)samples.length) - 2048.0f;
-            averageDcNow *= SampleBufferIterator.SCALE_SIGNED_12_BIT_TO_FLOAT;
-            mDcCalculationManager.adjust(averageDcNow);
-        }
-        else
-        {
-            for(; samplesOffset < VECTOR_SPECIES.loopBound(samples.length); samplesOffset += VECTOR_SPECIES.length())
-            {
-                bytesOffset = 0;
-
-                while(bytesOffset < VECTOR_SPECIES.length())
-                {
-                    bytes1[bytesOffset] = (short)(buffer.get(rawPointer++) & 0xFF);
-                    bytes2[bytesOffset++] = (short)(buffer.get(rawPointer++) & 0x0F);
-                }
-
-                vector = ShortVector.fromArray(VECTOR_SPECIES, bytes1, 0)
-                        .or(ShortVector.fromArray(VECTOR_SPECIES, bytes2, 0).lanewise(VectorOperators.LSHL, 8));
-                vector.intoArray(samples, samplesOffset);
-            }
-
-            for(; samplesOffset < samples.length; samplesOffset++)
-            {
-                b1 = buffer.get(rawPointer++);
-                b2 = buffer.get(rawPointer++);
-
-                sample = (short)(((b2 & 0x0F) << 8) | (b1 & 0xFF));
-                samples[samplesOffset] = sample;
-            }
-        }
-
-        return samples;
-    }
-
-    @Override
-    public float getAverageDc()
-    {
-        return mDcCalculationManager.getAverageDc();
-    }
-}

src/main/java/io/github/dsheirer/channel/metadata/ChannelMetadata.java

@@ -1,6 +1,6 @@
 /*
  * *****************************************************************************
- * Copyright (C) 2014-2024 Dennis Sheirer
+ * Copyright (C) 2014-2026 Dennis Sheirer
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -429,7 +429,7 @@ public class ChannelMetadata implements Listener<IdentifierUpdateNotification>,
                 {
                     if(identifier.getForm() == Form.TALKER_ALIAS)
                     {
-                        mTalkerAliasIdentifier = identifier;
+                        mTalkerAliasIdentifier = update.isAdd() ? identifier : null;
                     }
                     else
                     {

src/main/java/io/github/dsheirer/dsp/am/AmAudioNormalizer.java

@@ -0,0 +1,117 @@
+/*
+ * *****************************************************************************
+ * Copyright (C) 2014-2026 Dennis Sheirer
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ * ****************************************************************************
+ */
+package io.github.dsheirer.dsp.am;
+
+/**
+ * Converts an AM envelope to audio by removing the carrier (DC) and scaling the audio by the carrier level.
+ *
+ * An AM signal's envelope is carrier * (1 + modulation), so using the carrier as the gain reference gives audio that
+ * follows the modulation depth of the transmission, independent of the received signal strength and without the
+ * pumping of an audio peak based AGC.
+ *
+ * The carrier estimate uses a cumulative mean at the start of a transmission to lock quickly and without a transient,
+ * and then transitions to a low-pass filter.  The DC removal follows the carrier estimate closely.  The gain reference
+ * rises with the carrier but falls slowly so that when the carrier drops, the remaining noise isn't amplified to full
+ * scale before the squelch closes.
+ */
+public class AmAudioNormalizer
+{
+    private static final double CARRIER_CUTOFF_HERTZ = 10.0;
+    private static final double GAIN_DECAY_SECONDS = 2.0;
+
+    /**
+     * Gain reference limit, approximately -80 dBFS, that sets the maximum applied gain.
+     */
+    private static final float MINIMUM_CARRIER_LEVEL = 1E-4f;
+
+    /**
+     * Audio amplitude produced by 100% modulation.
+     */
+    private static final float FULL_MODULATION_AMPLITUDE = 0.75f;
+    private static final float MAXIMUM_AMPLITUDE = 0.95f;
+
+    private float mCarrierAlpha;
+    private float mGainDecayAlpha;
+    private int mSettlingSamples;
+    private int mSampleCount;
+    private float mCarrier;
+    private float mGainReference;
+
+    /**
+     * Constructs an instance
+     * @param sampleRate of the envelope samples in hertz
+     */
+    public AmAudioNormalizer(double sampleRate)
+    {
+        setSampleRate(sampleRate);
+    }
+
+    /**
+     * Sets the sample rate and resets this normalizer.
+     * @param sampleRate of the envelope samples in hertz
+     */
+    public void setSampleRate(double sampleRate)
+    {
+        mCarrierAlpha = (float)(1.0 - Math.exp(-2.0 * Math.PI * CARRIER_CUTOFF_HERTZ / sampleRate));
+        mGainDecayAlpha = (float)(1.0 - Math.exp(-1.0 / (GAIN_DECAY_SECONDS * sampleRate)));
+        mSettlingSamples = (int)Math.ceil(1.0 / mCarrierAlpha);
+        reset();
+    }
+
+    /**
+     * Resets this normalizer to prepare for a new transmission.
+     */
+    public void reset()
+    {
+        mSampleCount = 0;
+        mCarrier = 0.0f;
+        mGainReference = 0.0f;
+    }
+
+    /**
+     * Converts the envelope sample to an audio sample.
+     * @param envelope sample, unscaled
+     * @return audio sample limited to the audio amplitude range.
+     */
+    public float process(float envelope)
+    {
+        if(mSampleCount < mSettlingSamples)
+        {
+            mSampleCount++;
+            mCarrier += (envelope - mCarrier) / mSampleCount;
+            mGainReference = mCarrier;
+        }
+        else
+        {
+            mCarrier += (envelope - mCarrier) * mCarrierAlpha;
+
+            if(mCarrier > mGainReference)
+            {
+                mGainReference = mCarrier;
+            }
+            else
+            {
+                mGainReference += (mCarrier - mGainReference) * mGainDecayAlpha;
+            }
+        }
+
+        float audio = (envelope - mCarrier) / Math.max(mGainReference, MINIMUM_CARRIER_LEVEL) * FULL_MODULATION_AMPLITUDE;
+        return Math.clamp(audio, -MAXIMUM_AMPLITUDE, MAXIMUM_AMPLITUDE);
+    }
+}

src/main/java/io/github/dsheirer/dsp/am/AmDemodulatorFactory.java

@@ -51,8 +51,6 @@ public class AmDemodulatorFactory
                 return new VectorAMDemodulator256(gain);
             case VECTOR_SIMD_512:
                 return new VectorAMDemodulator512(gain);
-            case VECTOR_SIMD_PREFERRED:
-                return new VectorAMDemodulator64(gain);
             case SCALAR:
             case UNCALIBRATED:
                 return new ScalarAMDemodulator(gain);

src/main/java/io/github/dsheirer/dsp/am/ISquelchingDemodulator.java

@@ -17,13 +17,14 @@
  * ****************************************************************************
  */
 
-package io.github.dsheirer.dsp.fm;
+package io.github.dsheirer.dsp.am;
 
+import io.github.dsheirer.dsp.fm.IDemodulator;
 import io.github.dsheirer.sample.Listener;
 import io.github.dsheirer.source.SourceEvent;
 
 /**
- * Interface for FM demodulator that provides squelch control.
+ * Interface for AM demodulator that provides squelch control.
  */
 public interface ISquelchingDemodulator extends IDemodulator
 {

src/main/java/io/github/dsheirer/dsp/am/SquelchingAMDemodulator.java

@@ -19,7 +19,6 @@
 
 package io.github.dsheirer.dsp.am;
 
-import io.github.dsheirer.dsp.fm.ISquelchingDemodulator;
 import io.github.dsheirer.dsp.magnitude.IMagnitudeCalculator;
 import io.github.dsheirer.dsp.magnitude.MagnitudeFactory;
 import io.github.dsheirer.dsp.squelch.AdaptiveSquelch;
@@ -32,32 +31,63 @@ import io.github.dsheirer.source.SourceEvent;
 public class SquelchingAMDemodulator implements ISquelchingDemodulator, Listener<SourceEvent>
 {
     private static final float ZERO = 0.0f;
+    private static final float ENVELOPE_GAIN = 1.0f;
+    private static final double DEFAULT_SAMPLE_RATE = 50000.0;
+    private static final double FADE_SECONDS = 0.005;
+
+    /**
+     * Audio delay, longer than the worst case 25 ms for the squelch to detect loss of signal plus the fade duration, so
+     * that the audio fades out before the carrier drop reaches the audio normalizer, which would otherwise produce a
+     * thump at the end of a transmission.
+     */
+    private static final double AUDIO_DELAY_SECONDS = 0.032;
     private final IMagnitudeCalculator mMagnitudeCalculator = MagnitudeFactory.getMagnitudeCalculator();
     private final IAmDemodulator mAmDemodulator;
     private final AdaptiveSquelch mAdaptiveSquelch;
+    private final AmAudioNormalizer mAudioNormalizer = new AmAudioNormalizer(DEFAULT_SAMPLE_RATE);
+    private float[] mDelayedEnvelope;
+    private boolean[] mDelayedAudioEnabled;
+    private int mDelayPointer = 0;
+    private float mFadeGain = 0.0f;
+    private float mFadeStep = (float)(1.0 / (DEFAULT_SAMPLE_RATE * FADE_SECONDS));
     private boolean mSquelchChanged = false;
 
     /**
      * Constructs an instance
-     * @param gain to apply to the demodulated AM samples (e.g. 500.0f)
-     * @param alpha decay value of the single pole IIR filter in range: 0.0 - 1.0.  The smaller the alpha value,
-     * the slower the squelch response.
      * @param squelchThreshold in decibels.  Signal power must exceed this threshold value for unsquelch.
      * @param squelchAutoTrack to enable the squelch noise floor auto tracking feature.
+     * @param bandwidth of the channel in hertz
      */
-    public SquelchingAMDemodulator(float gain, float alpha, float squelchThreshold, boolean squelchAutoTrack)
+    public SquelchingAMDemodulator(float squelchThreshold, boolean squelchAutoTrack, double bandwidth)
     {
-        mAmDemodulator = AmDemodulatorFactory.getAmDemodulator(gain);
-        mAdaptiveSquelch = new AdaptiveSquelch(alpha, squelchThreshold, squelchAutoTrack);
+        mAmDemodulator = AmDemodulatorFactory.getAmDemodulator(ENVELOPE_GAIN);
+        mAdaptiveSquelch = new AdaptiveSquelch(squelchThreshold, squelchAutoTrack, bandwidth);
+        setAudioDelay(DEFAULT_SAMPLE_RATE);
     }
 
     /**
-     * Set or update the sample rate for the squelch to adjust the power level notification rate.
+     * Set or update the sample rate for the squelch to adjust the power level notification rate and for the audio
+     * normalizer timing.
      * @param sampleRate in hertz
      */
     public void setSampleRate(int sampleRate)
     {
         mAdaptiveSquelch.setSampleRate(sampleRate);
+        mAudioNormalizer.setSampleRate(sampleRate);
+        mFadeStep = (float)Math.min(1.0, 1.0 / (sampleRate * FADE_SECONDS));
+        setAudioDelay(sampleRate);
+    }
+
+    /**
+     * Sizes the audio delay buffers.
+     * @param sampleRate in hertz
+     */
+    private void setAudioDelay(double sampleRate)
+    {
+        int length = (int)Math.ceil(sampleRate * AUDIO_DELAY_SECONDS);
+        mDelayedEnvelope = new float[length];
+        mDelayedAudioEnabled = new boolean[length];
+        mDelayPointer = 0;
     }
 
     /**
@@ -72,7 +102,7 @@ public class SquelchingAMDemodulator implements ISquelchingDemodulator, Listener
      * Demodulates the complex sample arrays.
      * @param i inphase sample array
      * @param q quadrature sample array
-     * @return demodulated AM samples with gain applied.
+     * @return demodulated audio samples, normalized to the carrier level, or zero valued samples while squelched.
      */
     public float[] demodulate(float[] i, float[] q)
     {
@@ -86,9 +116,26 @@ public class SquelchingAMDemodulator implements ISquelchingDemodulator, Listener
         {
             mAdaptiveSquelch.process(magnitude[x]);
 
-            if(!(mAdaptiveSquelch.isUnmuted()))
+            boolean audioEnabled = mAdaptiveSquelch.isAudioEnabled();
+            float envelope = mDelayedEnvelope[mDelayPointer];
+            boolean delayedAudioEnabled = mDelayedAudioEnabled[mDelayPointer];
+            mDelayedEnvelope[mDelayPointer] = demodulated[x];
+            mDelayedAudioEnabled[mDelayPointer] = audioEnabled;
+            mDelayPointer = (mDelayPointer + 1) % mDelayedEnvelope.length;
+
+            //Fade in once the delayed audio reaches the squelch open point and fade out as soon as the squelch detects
+            //loss of signal, ahead of the delayed audio.
+            mFadeGain = (audioEnabled && delayedAudioEnabled) ? Math.min(mFadeGain + mFadeStep, 1.0f) :
+                    Math.max(mFadeGain - mFadeStep, 0.0f);
+
+            if(mFadeGain > ZERO)
+            {
+                demodulated[x] = mAudioNormalizer.process(envelope) * mFadeGain;
+            }
+            else
             {
                 demodulated[x] = ZERO;
+                mAudioNormalizer.reset();
             }
 
             if(mAdaptiveSquelch.isSquelchChanged())

src/main/java/io/github/dsheirer/dsp/am/VectorAMDemodulator128.java

@@ -18,8 +18,6 @@
  */
 package io.github.dsheirer.dsp.am;
 
-import io.github.dsheirer.dsp.magnitude.IMagnitudeCalculator;
-import io.github.dsheirer.dsp.magnitude.MagnitudeFactory;
 import io.github.dsheirer.vector.VectorUtilities;
 import jdk.incubator.vector.FloatVector;
 import jdk.incubator.vector.VectorSpecies;
@@ -32,7 +30,6 @@ public class VectorAMDemodulator128 implements IAmDemodulator
 {
     private static final VectorSpecies<Float> VECTOR_SPECIES = FloatVector.SPECIES_128;
     private float mGain;
-    private IMagnitudeCalculator mMagnitudeCalculator = MagnitudeFactory.getMagnitudeCalculator();
 
     /**
      * Constructs this demodulator where the specified gain is applied to demodulated output samples.

src/main/java/io/github/dsheirer/dsp/am/VectorAMDemodulator256.java

@@ -18,8 +18,6 @@
  */
 package io.github.dsheirer.dsp.am;
 
-import io.github.dsheirer.dsp.magnitude.IMagnitudeCalculator;
-import io.github.dsheirer.dsp.magnitude.MagnitudeFactory;
 import io.github.dsheirer.vector.VectorUtilities;
 import jdk.incubator.vector.FloatVector;
 import jdk.incubator.vector.VectorSpecies;
@@ -32,7 +30,6 @@ public class VectorAMDemodulator256 implements IAmDemodulator
 {
     private static final VectorSpecies<Float> VECTOR_SPECIES = FloatVector.SPECIES_256;
     private float mGain;
-    private IMagnitudeCalculator mMagnitudeCalculator = MagnitudeFactory.getMagnitudeCalculator();
 
     /**
      * Constructs this demodulator where the specified gain is applied to demodulated output samples.

src/main/java/io/github/dsheirer/dsp/am/VectorAMDemodulator512.java

@@ -18,8 +18,6 @@
  */
 package io.github.dsheirer.dsp.am;
 
-import io.github.dsheirer.dsp.magnitude.IMagnitudeCalculator;
-import io.github.dsheirer.dsp.magnitude.MagnitudeFactory;
 import io.github.dsheirer.vector.VectorUtilities;
 import jdk.incubator.vector.FloatVector;
 import jdk.incubator.vector.VectorSpecies;
@@ -32,7 +30,6 @@ public class VectorAMDemodulator512 implements IAmDemodulator
 {
     private static final VectorSpecies<Float> VECTOR_SPECIES = FloatVector.SPECIES_512;
     private float mGain;
-    private IMagnitudeCalculator mMagnitudeCalculator = MagnitudeFactory.getMagnitudeCalculator();
 
     /**
      * Constructs this demodulator where the specified gain is applied to demodulated output samples.

src/main/java/io/github/dsheirer/dsp/am/VectorAMDemodulator64.java

@@ -18,8 +18,6 @@
  */
 package io.github.dsheirer.dsp.am;
 
-import io.github.dsheirer.dsp.magnitude.IMagnitudeCalculator;
-import io.github.dsheirer.dsp.magnitude.MagnitudeFactory;
 import io.github.dsheirer.vector.VectorUtilities;
 import jdk.incubator.vector.FloatVector;
 import jdk.incubator.vector.VectorSpecies;
@@ -32,7 +30,6 @@ public class VectorAMDemodulator64 implements IAmDemodulator
 {
     private static final VectorSpecies<Float> VECTOR_SPECIES = FloatVector.SPECIES_64;
     private float mGain;
-    private IMagnitudeCalculator mMagnitudeCalculator = MagnitudeFactory.getMagnitudeCalculator();
 
     /**
      * Constructs this demodulator where the specified gain is applied to demodulated output samples.

src/main/java/io/github/dsheirer/dsp/c4fm/C4FMSymbolProcessor.java

@@ -257,6 +257,20 @@ public abstract class C4FMSymbolProcessor
         return true;
     }
 
+    /**
+     * Maximum bit errors allowed in a detected sync pattern while acquiring (ie not synchronized), measured from the
+     * symbol decisions at the optimized symbol timing.  Sync detections with more bit errors are rejected.  Bit errors
+     * include symbol magnitude (ie +3 vs +1) errors, so this rejects noise where the symbol signs correlate with the
+     * sync pattern but the symbol magnitudes are inconsistent.  Once synchronized, the limit isn't applied since the
+     * sync detection timing is known and rejecting a valid sync detection costs the burst.  Default implementation
+     * imposes no limit.
+     * @return maximum sync pattern bit error count while acquiring.
+     */
+    public int getSyncAcquisitionMaxBitErrors()
+    {
+        return Integer.MAX_VALUE;
+    }
+
     /**
      * Number of consecutive sync periods (capped at 3) where a sync was detected within the max message length.
      */
@@ -945,12 +959,14 @@ public abstract class C4FMSymbolProcessor
         }
 
         /**
-         * Indicates if this correction has a valid NID or the optimization (or detection) score is high quality.
+         * Indicates if the optimization score is high quality and, while acquiring, the sync pattern bit errors don't
+         * exceed the max.
          * @return true if valid.
          */
         public boolean isValid()
         {
-            return mOptimizationScore > getSyncThresholdEqualized();
+            return mOptimizationScore > getSyncThresholdEqualized() &&
+                    (mSynchronized || mCorrectedBitCount <= getSyncAcquisitionMaxBitErrors());
         }
     }
 

src/main/java/io/github/dsheirer/dsp/fft/MixedRadixComplexFFT.java

@@ -0,0 +1,779 @@
+/*
+ * *****************************************************************************
+ * Copyright (C) 2014-2026 Dennis Sheirer
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ * ****************************************************************************
+ *
+ * The transform kernels in this class are ported from the mixed radix complex FFT (cffti, cfftf and passf2/3/4/5)
+ * in JTransforms org.jtransforms.fft.FloatFFT_1D, which carries the following license:
+ *
+ * JTransforms
+ * Copyright (c) 2007 onward, Piotr Wendykier
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package io.github.dsheirer.dsp.fft;
+
+/**
+ * Allocation-free mixed radix complex FFT for sizes that factor into 2, 3 and 5 only.
+ *
+ * This is a port of the JTransforms FloatFFT_1D mixed radix complex transform path.  JTransforms allocates a new
+ * 2N float scratch array on every mixed radix transform, which creates significant garbage collection pressure when
+ * the transform runs at block rate (e.g. the polyphase channelizer IFFT).  This implementation pre-allocates the
+ * scratch buffer once and reuses it for each transform.
+ *
+ * Results match JTransforms FloatFFT_1D complexForward() and complexInverse(): the forward transform uses the
+ * exp(-j...) kernel, the inverse uses exp(+j...), and the inverse optionally scales by 1/N.  Twiddle factors are
+ * calculated in double precision, so results can differ from JTransforms in the least significant bits.
+ *
+ * Samples are interleaved complex: a[offset + 2k] = Re[k] and a[offset + 2k + 1] = Im[k] for 0 <= k < N.
+ *
+ * Note: this class is NOT thread-safe since it reuses an internal scratch buffer.  Use one instance per thread.
+ */
+public class MixedRadixComplexFFT
+{
+    private static final int[] FACTORS = {4, 2, 3, 5};
+    private static final int FORWARD = -1;
+    private static final int INVERSE = 1;
+
+    private final int mSize;
+    private final int[] mFactors;
+    private final float[] mTwiddles;
+    private final float[] mScratch;
+    private final float mScale;
+
+    /**
+     * Constructs an instance
+     * @param size of the transform in complex samples.  Must be a positive value with no prime factors other than
+     * 2, 3 and 5.
+     * @throws IllegalArgumentException if the size is not supported
+     */
+    public MixedRadixComplexFFT(int size)
+    {
+        if(!isSupported(size))
+        {
+            throw new IllegalArgumentException("Unsupported FFT size [" + size +
+                "] - size must be positive and have no prime factors other than 2, 3 and 5");
+        }
+
+        mSize = size;
+        mFactors = factorize(size);
+        mTwiddles = new float[2 * size + 2];
+        mScratch = new float[2 * size];
+        mScale = 1.0f / size;
+        calculateTwiddles();
+    }
+
+    /**
+     * Indicates if the size can be transformed by this class.
+     * @param size in complex samples
+     * @return true if the size is positive and has no prime factors other than 2, 3 and 5.
+     */
+    public static boolean isSupported(int size)
+    {
+        if(size < 1)
+        {
+            return false;
+        }
+
+        int remainder = size;
+
+        for(int factor: new int[]{2, 3, 5})
+        {
+            while(remainder % factor == 0)
+            {
+                remainder /= factor;
+            }
+        }
+
+        return remainder == 1;
+    }
+
+    /**
+     * Size of this transform
+     * @return size in complex samples
+     */
+    public int getSize()
+    {
+        return mSize;
+    }
+
+    /**
+     * Computes the forward DFT of the interleaved complex samples, in place.  Equivalent to JTransforms
+     * FloatFFT_1D.complexForward(samples, offset).
+     * @param samples interleaved complex, with at least 2N values from the offset
+     * @param offset to the first sample
+     */
+    public void forward(float[] samples, int offset)
+    {
+        transform(samples, offset, FORWARD);
+    }
+
+    /**
+     * Computes the forward DFT of the interleaved complex samples, in place.
+     * @param samples interleaved complex, with at least 2N values
+     */
+    public void forward(float[] samples)
+    {
+        forward(samples, 0);
+    }
+
+    /**
+     * Computes the inverse DFT of the interleaved complex samples, in place.  Equivalent to JTransforms
+     * FloatFFT_1D.complexInverse(samples, offset, scale).
+     * @param samples interleaved complex, with at least 2N values from the offset
+     * @param offset to the first sample
+     * @param scale true to scale the results by 1/N
+     */
+    public void inverse(float[] samples, int offset, boolean scale)
+    {
+        transform(samples, offset, INVERSE);
+
+        if(scale && mSize > 1)
+        {
+            int end = offset + 2 * mSize;
+
+            for(int x = offset; x < end; x++)
+            {
+                samples[x] *= mScale;
+            }
+        }
+    }
+
+    /**
+     * Computes the inverse DFT of the interleaved complex samples, in place.
+     * @param samples interleaved complex, with at least 2N values
+     * @param scale true to scale the results by 1/N
+     */
+    public void inverse(float[] samples, boolean scale)
+    {
+        inverse(samples, 0, scale);
+    }
+
+    /**
+     * Factors the size into the radix sequence used by the transform, ported from JTransforms cffti().  Radix 4 is
+     * preferred, then 2, 3 and 5, and a radix 2 factor is moved to the front of the sequence.
+     */
+    private static int[] factorize(int size)
+    {
+        if(size == 1)
+        {
+            return new int[0];
+        }
+
+        int[] factors = new int[32];
+        int count = 0;
+        int remainder = size;
+
+        for(int factor: FACTORS)
+        {
+            while(remainder % factor == 0)
+            {
+                factors[count++] = factor;
+                remainder /= factor;
+
+                if(factor == 2 && count != 1)
+                {
+                    System.arraycopy(factors, 0, factors, 1, count - 1);
+                    factors[0] = 2;
+                }
+            }
+        }
+
+        if(remainder != 1)
+        {
+            throw new IllegalArgumentException("Unsupported FFT size [" + size + "]");
+        }
+
+        int[] result = new int[count];
+        System.arraycopy(factors, 0, result, 0, count);
+        return result;
+    }
+
+    /**
+     * Calculates the twiddle factor table, ported from JTransforms cffti() with the table offset removed and the
+     * angles calculated in double precision.
+     */
+    private void calculateTwiddles()
+    {
+        if(mSize == 1)
+        {
+            return;
+        }
+
+        double angleIncrement = 2.0 * Math.PI / mSize;
+        int i = 1;
+        int l1 = 1;
+
+        for(int factor: mFactors)
+        {
+            int ld = 0;
+            int l2 = l1 * factor;
+            int ido = mSize / l2;
+            int idot = ido + ido + 2;
+
+            for(int j = 1; j < factor; j++)
+            {
+                mTwiddles[i - 1] = 1;
+                mTwiddles[i] = 0;
+                ld += l1;
+                int fi = 0;
+                double argld = ld * angleIncrement;
+
+                for(int ii = 4; ii <= idot; ii += 2)
+                {
+                    i += 2;
+                    fi++;
+                    double arg = fi * argld;
+                    mTwiddles[i - 1] = (float)Math.cos(arg);
+                    mTwiddles[i] = (float)Math.sin(arg);
+                }
+            }
+
+            l1 = l2;
+        }
+    }
+
+    /**
+     * Performs the transform, ported from JTransforms cfftf() using the reusable scratch buffer.
+     * @param a samples
+     * @param offa offset to first sample
+     * @param isign -1 for forward and +1 for inverse
+     */
+    private void transform(float[] a, int offa, int isign)
+    {
+        if(mSize == 1)
+        {
+            return;
+        }
+
+        float[] ch = mScratch;
+        int twon = 2 * mSize;
+        boolean inScratch = false;
+        int l1 = 1;
+        int iw = 0;
+
+        for(int factor: mFactors)
+        {
+            int l2 = factor * l1;
+            int idot = 2 * (mSize / l2);
+
+            switch(factor)
+            {
+                case 4:
+                    if(inScratch)
+                    {
+                        passf4(idot, l1, ch, 0, a, offa, iw, isign);
+                    }
+                    else
+                    {
+                        passf4(idot, l1, a, offa, ch, 0, iw, isign);
+                    }
+                    break;
+                case 2:
+                    if(inScratch)
+                    {
+                        passf2(idot, l1, ch, 0, a, offa, iw, isign);
+                    }
+                    else
+                    {
+                        passf2(idot, l1, a, offa, ch, 0, iw, isign);
+                    }
+                    break;
+                case 3:
+                    if(inScratch)
+                    {
+                        passf3(idot, l1, ch, 0, a, offa, iw, isign);
+                    }
+                    else
+                    {
+                        passf3(idot, l1, a, offa, ch, 0, iw, isign);
+                    }
+                    break;
+                case 5:
+                    if(inScratch)
+                    {
+                        passf5(idot, l1, ch, 0, a, offa, iw, isign);
+                    }
+                    else
+                    {
+                        passf5(idot, l1, a, offa, ch, 0, iw, isign);
+                    }
+                    break;
+                default:
+                    throw new IllegalStateException("Unsupported radix: " + factor);
+            }
+
+            inScratch = !inScratch;
+            l1 = l2;
+            iw += (factor - 1) * idot;
+        }
+
+        if(inScratch)
+        {
+            System.arraycopy(ch, 0, a, offa, twon);
+        }
+    }
+
+    /**
+     * Radix 2 butterfly, ported from JTransforms passf2().
+     */
+    private void passf2(final int ido, final int l1, final float[] in, final int in_off, final float[] out,
+                        final int out_off, final int offset, final int isign)
+    {
+        final float[] wtable = mTwiddles;
+        int iw1 = offset;
+        int idx = ido * l1;
+
+        if(ido <= 2)
+        {
+            for(int k = 0; k < l1; k++)
+            {
+                int idx0 = k * ido;
+                int iidx1 = in_off + 2 * idx0;
+                int iidx2 = iidx1 + ido;
+                float a1r = in[iidx1];
+                float a1i = in[iidx1 + 1];
+                float a2r = in[iidx2];
+                float a2i = in[iidx2 + 1];
+
+                int oidx1 = out_off + idx0;
+                int oidx2 = oidx1 + idx;
+                out[oidx1] = a1r + a2r;
+                out[oidx1 + 1] = a1i + a2i;
+                out[oidx2] = a1r - a2r;
+                out[oidx2 + 1] = a1i - a2i;
+            }
+        }
+        else
+        {
+            for(int k = 0; k < l1; k++)
+            {
+                for(int i = 0; i < ido - 1; i += 2)
+                {
+                    int idx0 = k * ido;
+                    int iidx1 = in_off + i + 2 * idx0;
+                    int iidx2 = iidx1 + ido;
+                    float i1r = in[iidx1];
+                    float i1i = in[iidx1 + 1];
+                    float i2r = in[iidx2];
+                    float i2i = in[iidx2 + 1];
+
+                    int widx1 = i + iw1;
+                    float w1r = wtable[widx1];
+                    float w1i = isign * wtable[widx1 + 1];
+
+                    float t1r = i1r - i2r;
+                    float t1i = i1i - i2i;
+
+                    int oidx1 = out_off + i + idx0;
+                    int oidx2 = oidx1 + idx;
+                    out[oidx1] = i1r + i2r;
+                    out[oidx1 + 1] = i1i + i2i;
+                    out[oidx2] = w1r * t1r - w1i * t1i;
+                    out[oidx2 + 1] = w1r * t1i + w1i * t1r;
+                }
+            }
+        }
+    }
+
+    /**
+     * Radix 3 butterfly, ported from JTransforms passf3().
+     */
+    private void passf3(final int ido, final int l1, final float[] in, final int in_off, final float[] out,
+                        final int out_off, final int offset, final int isign)
+    {
+        final float taur = -0.5f;
+        final float taui = 0.866025403784438707610604524234076962f;
+        final float[] wtable = mTwiddles;
+        int iw1 = offset;
+        int iw2 = iw1 + ido;
+        final int idxt = l1 * ido;
+
+        if(ido == 2)
+        {
+            for(int k = 1; k <= l1; k++)
+            {
+                int iidx1 = in_off + (3 * k - 2) * ido;
+                int iidx2 = iidx1 + ido;
+                int iidx3 = iidx1 - ido;
+                float i1r = in[iidx1];
+                float i1i = in[iidx1 + 1];
+                float i2r = in[iidx2];
+                float i2i = in[iidx2 + 1];
+                float i3r = in[iidx3];
+                float i3i = in[iidx3 + 1];
+
+                float tr2 = i1r + i2r;
+                float cr2 = i3r + taur * tr2;
+                float ti2 = i1i + i2i;
+                float ci2 = i3i + taur * ti2;
+                float cr3 = isign * taui * (i1r - i2r);
+                float ci3 = isign * taui * (i1i - i2i);
+
+                int oidx1 = out_off + (k - 1) * ido;
+                int oidx2 = oidx1 + idxt;
+                int oidx3 = oidx2 + idxt;
+                out[oidx1] = i3r + tr2;
+                out[oidx1 + 1] = i3i + ti2;
+                out[oidx2] = cr2 - ci3;
+                out[oidx2 + 1] = ci2 + cr3;
+                out[oidx3] = cr2 + ci3;
+                out[oidx3 + 1] = ci2 - cr3;
+            }
+        }
+        else
+        {
+            for(int k = 1; k <= l1; k++)
+            {
+                int idx1 = in_off + (3 * k - 2) * ido;
+                int idx2 = out_off + (k - 1) * ido;
+
+                for(int i = 0; i < ido - 1; i += 2)
+                {
+                    int iidx1 = i + idx1;
+                    int iidx2 = iidx1 + ido;
+                    int iidx3 = iidx1 - ido;
+                    float a1r = in[iidx1];
+                    float a1i = in[iidx1 + 1];
+                    float a2r = in[iidx2];
+                    float a2i = in[iidx2 + 1];
+                    float a3r = in[iidx3];
+                    float a3i = in[iidx3 + 1];
+
+                    float tr2 = a1r + a2r;
+                    float cr2 = a3r + taur * tr2;
+                    float ti2 = a1i + a2i;
+                    float ci2 = a3i + taur * ti2;
+                    float cr3 = isign * taui * (a1r - a2r);
+                    float ci3 = isign * taui * (a1i - a2i);
+                    float dr2 = cr2 - ci3;
+                    float dr3 = cr2 + ci3;
+                    float di2 = ci2 + cr3;
+                    float di3 = ci2 - cr3;
+
+                    int widx1 = i + iw1;
+                    int widx2 = i + iw2;
+                    float w1r = wtable[widx1];
+                    float w1i = isign * wtable[widx1 + 1];
+                    float w2r = wtable[widx2];
+                    float w2i = isign * wtable[widx2 + 1];
+
+                    int oidx1 = i + idx2;
+                    int oidx2 = oidx1 + idxt;
+                    int oidx3 = oidx2 + idxt;
+                    out[oidx1] = a3r + tr2;
+                    out[oidx1 + 1] = a3i + ti2;
+                    out[oidx2] = w1r * dr2 - w1i * di2;
+                    out[oidx2 + 1] = w1r * di2 + w1i * dr2;
+                    out[oidx3] = w2r * dr3 - w2i * di3;
+                    out[oidx3 + 1] = w2r * di3 + w2i * dr3;
+                }
+            }
+        }
+    }
+
+    /**
+     * Radix 4 butterfly, ported from JTransforms passf4().
+     */
+    private void passf4(final int ido, final int l1, final float[] in, final int in_off, final float[] out,
+                        final int out_off, final int offset, final int isign)
+    {
+        final float[] wtable = mTwiddles;
+        int iw1 = offset;
+        int iw2 = iw1 + ido;
+        int iw3 = iw2 + ido;
+        int idx0 = l1 * ido;
+
+        if(ido == 2)
+        {
+            for(int k = 0; k < l1; k++)
+            {
+                int idxt1 = k * ido;
+                int iidx1 = in_off + 4 * idxt1 + 1;
+                int iidx2 = iidx1 + ido;
+                int iidx3 = iidx2 + ido;
+                int iidx4 = iidx3 + ido;
+
+                float i1i = in[iidx1 - 1];
+                float i1r = in[iidx1];
+                float i2i = in[iidx2 - 1];
+                float i2r = in[iidx2];
+                float i3i = in[iidx3 - 1];
+                float i3r = in[iidx3];
+                float i4i = in[iidx4 - 1];
+                float i4r = in[iidx4];
+
+                float ti1 = i1r - i3r;
+                float ti2 = i1r + i3r;
+                float tr4 = i4r - i2r;
+                float ti3 = i2r + i4r;
+                float tr1 = i1i - i3i;
+                float tr2 = i1i + i3i;
+                float ti4 = i2i - i4i;
+                float tr3 = i2i + i4i;
+
+                int oidx1 = out_off + idxt1;
+                int oidx2 = oidx1 + idx0;
+                int oidx3 = oidx2 + idx0;
+                int oidx4 = oidx3 + idx0;
+                out[oidx1] = tr2 + tr3;
+                out[oidx1 + 1] = ti2 + ti3;
+                out[oidx2] = tr1 + isign * tr4;
+                out[oidx2 + 1] = ti1 + isign * ti4;
+                out[oidx3] = tr2 - tr3;
+                out[oidx3 + 1] = ti2 - ti3;
+                out[oidx4] = tr1 - isign * tr4;
+                out[oidx4 + 1] = ti1 - isign * ti4;
+            }
+        }
+        else
+        {
+            for(int k = 0; k < l1; k++)
+            {
+                int idx1 = k * ido;
+                int idx2 = in_off + 1 + 4 * idx1;
+
+                for(int i = 0; i < ido - 1; i += 2)
+                {
+                    int iidx1 = i + idx2;
+                    int iidx2 = iidx1 + ido;
+                    int iidx3 = iidx2 + ido;
+                    int iidx4 = iidx3 + ido;
+                    float i1i = in[iidx1 - 1];
+                    float i1r = in[iidx1];
+                    float i2i = in[iidx2 - 1];
+                    float i2r = in[iidx2];
+                    float i3i = in[iidx3 - 1];
+                    float i3r = in[iidx3];
+                    float i4i = in[iidx4 - 1];
+                    float i4r = in[iidx4];
+
+                    float ti1 = i1r - i3r;
+                    float ti2 = i1r + i3r;
+                    float ti3 = i2r + i4r;
+                    float tr4 = i4r - i2r;
+                    float tr1 = i1i - i3i;
+                    float tr2 = i1i + i3i;
+                    float ti4 = i2i - i4i;
+                    float tr3 = i2i + i4i;
+                    float cr3 = tr2 - tr3;
+                    float ci3 = ti2 - ti3;
+                    float cr2 = tr1 + isign * tr4;
+                    float cr4 = tr1 - isign * tr4;
+                    float ci2 = ti1 + isign * ti4;
+                    float ci4 = ti1 - isign * ti4;
+
+                    int widx1 = i + iw1;
+                    int widx2 = i + iw2;
+                    int widx3 = i + iw3;
+                    float w1r = wtable[widx1];
+                    float w1i = isign * wtable[widx1 + 1];
+                    float w2r = wtable[widx2];
+                    float w2i = isign * wtable[widx2 + 1];
+                    float w3r = wtable[widx3];
+                    float w3i = isign * wtable[widx3 + 1];
+
+                    int oidx1 = out_off + i + idx1;
+                    int oidx2 = oidx1 + idx0;
+                    int oidx3 = oidx2 + idx0;
+                    int oidx4 = oidx3 + idx0;
+                    out[oidx1] = tr2 + tr3;
+                    out[oidx1 + 1] = ti2 + ti3;
+                    out[oidx2] = w1r * cr2 - w1i * ci2;
+                    out[oidx2 + 1] = w1r * ci2 + w1i * cr2;
+                    out[oidx3] = w2r * cr3 - w2i * ci3;
+                    out[oidx3 + 1] = w2r * ci3 + w2i * cr3;
+                    out[oidx4] = w3r * cr4 - w3i * ci4;
+                    out[oidx4 + 1] = w3r * ci4 + w3i * cr4;
+                }
+            }
+        }
+    }
+
+    /**
+     * Radix 5 butterfly, ported from JTransforms passf5().
+     */
+    private void passf5(final int ido, final int l1, final float[] in, final int in_off, final float[] out,
+                        final int out_off, final int offset, final int isign)
+    {
+        final float tr11 = 0.309016994374947451262869435595348477f;
+        final float ti11 = 0.951056516295153531181938433292089030f;
+        final float tr12 = -0.809016994374947340240566973079694435f;
+        final float ti12 = 0.587785252292473248125759255344746634f;
+        final float[] wtable = mTwiddles;
+        int iw1 = offset;
+        int iw2 = iw1 + ido;
+        int iw3 = iw2 + ido;
+        int iw4 = iw3 + ido;
+        int idx0 = l1 * ido;
+
+        if(ido == 2)
+        {
+            for(int k = 1; k <= l1; ++k)
+            {
+                int iidx1 = in_off + (5 * k - 4) * ido + 1;
+                int iidx2 = iidx1 + ido;
+                int iidx3 = iidx1 - ido;
+                int iidx4 = iidx2 + ido;
+                int iidx5 = iidx4 + ido;
+
+                float i1i = in[iidx1 - 1];
+                float i1r = in[iidx1];
+                float i2i = in[iidx2 - 1];
+                float i2r = in[iidx2];
+                float i3i = in[iidx3 - 1];
+                float i3r = in[iidx3];
+                float i4i = in[iidx4 - 1];
+                float i4r = in[iidx4];
+                float i5i = in[iidx5 - 1];
+                float i5r = in[iidx5];
+
+                float ti5 = i1r - i5r;
+                float ti2 = i1r + i5r;
+                float ti4 = i2r - i4r;
+                float ti3 = i2r + i4r;
+                float tr5 = i1i - i5i;
+                float tr2 = i1i + i5i;
+                float tr4 = i2i - i4i;
+                float tr3 = i2i + i4i;
+                float cr2 = i3i + tr11 * tr2 + tr12 * tr3;
+                float ci2 = i3r + tr11 * ti2 + tr12 * ti3;
+                float cr3 = i3i + tr12 * tr2 + tr11 * tr3;
+                float ci3 = i3r + tr12 * ti2 + tr11 * ti3;
+                float cr5 = isign * (ti11 * tr5 + ti12 * tr4);
+                float ci5 = isign * (ti11 * ti5 + ti12 * ti4);
+                float cr4 = isign * (ti12 * tr5 - ti11 * tr4);
+                float ci4 = isign * (ti12 * ti5 - ti11 * ti4);
+
+                int oidx1 = out_off + (k - 1) * ido;
+                int oidx2 = oidx1 + idx0;
+                int oidx3 = oidx2 + idx0;
+                int oidx4 = oidx3 + idx0;
+                int oidx5 = oidx4 + idx0;
+                out[oidx1] = i3i + tr2 + tr3;
+                out[oidx1 + 1] = i3r + ti2 + ti3;
+                out[oidx2] = cr2 - ci5;
+                out[oidx2 + 1] = ci2 + cr5;
+                out[oidx3] = cr3 - ci4;
+                out[oidx3 + 1] = ci3 + cr4;
+                out[oidx4] = cr3 + ci4;
+                out[oidx4 + 1] = ci3 - cr4;
+                out[oidx5] = cr2 + ci5;
+                out[oidx5 + 1] = ci2 - cr5;
+            }
+        }
+        else
+        {
+            for(int k = 1; k <= l1; k++)
+            {
+                int idx1 = in_off + 1 + (k * 5 - 4) * ido;
+                int idx2 = out_off + (k - 1) * ido;
+
+                for(int i = 0; i < ido - 1; i += 2)
+                {
+                    int iidx1 = i + idx1;
+                    int iidx2 = iidx1 + ido;
+                    int iidx3 = iidx1 - ido;
+                    int iidx4 = iidx2 + ido;
+                    int iidx5 = iidx4 + ido;
+                    float i1i = in[iidx1 - 1];
+                    float i1r = in[iidx1];
+                    float i2i = in[iidx2 - 1];
+                    float i2r = in[iidx2];
+                    float i3i = in[iidx3 - 1];
+                    float i3r = in[iidx3];
+                    float i4i = in[iidx4 - 1];
+                    float i4r = in[iidx4];
+                    float i5i = in[iidx5 - 1];
+                    float i5r = in[iidx5];
+
+                    float ti5 = i1r - i5r;
+                    float ti2 = i1r + i5r;
+                    float ti4 = i2r - i4r;
+                    float ti3 = i2r + i4r;
+                    float tr5 = i1i - i5i;
+                    float tr2 = i1i + i5i;
+                    float tr4 = i2i - i4i;
+                    float tr3 = i2i + i4i;
+                    float cr2 = i3i + tr11 * tr2 + tr12 * tr3;
+                    float ci2 = i3r + tr11 * ti2 + tr12 * ti3;
+                    float cr3 = i3i + tr12 * tr2 + tr11 * tr3;
+                    float ci3 = i3r + tr12 * ti2 + tr11 * ti3;
+                    float cr5 = isign * (ti11 * tr5 + ti12 * tr4);
+                    float ci5 = isign * (ti11 * ti5 + ti12 * ti4);
+                    float cr4 = isign * (ti12 * tr5 - ti11 * tr4);
+                    float ci4 = isign * (ti12 * ti5 - ti11 * ti4);
+                    float dr3 = cr3 - ci4;
+                    float dr4 = cr3 + ci4;
+                    float di3 = ci3 + cr4;
+                    float di4 = ci3 - cr4;
+                    float dr5 = cr2 + ci5;
+                    float dr2 = cr2 - ci5;
+                    float di5 = ci2 - cr5;
+                    float di2 = ci2 + cr5;
+
+                    int widx1 = i + iw1;
+                    int widx2 = i + iw2;
+                    int widx3 = i + iw3;
+                    int widx4 = i + iw4;
+                    float w1r = wtable[widx1];
+                    float w1i = isign * wtable[widx1 + 1];
+                    float w2r = wtable[widx2];
+                    float w2i = isign * wtable[widx2 + 1];
+                    float w3r = wtable[widx3];
+                    float w3i = isign * wtable[widx3 + 1];
+                    float w4r = wtable[widx4];
+                    float w4i = isign * wtable[widx4 + 1];
+
+                    int oidx1 = i + idx2;
+                    int oidx2 = oidx1 + idx0;
+                    int oidx3 = oidx2 + idx0;
+                    int oidx4 = oidx3 + idx0;
+                    int oidx5 = oidx4 + idx0;
+                    out[oidx1] = i3i + tr2 + tr3;
+                    out[oidx1 + 1] = i3r + ti2 + ti3;
+                    out[oidx2] = w1r * dr2 - w1i * di2;
+                    out[oidx2 + 1] = w1r * di2 + w1i * dr2;
+                    out[oidx3] = w2r * dr3 - w2i * di3;
+                    out[oidx3 + 1] = w2r * di3 + w2i * dr3;
+                    out[oidx4] = w3r * dr4 - w3i * di4;
+                    out[oidx4 + 1] = w3r * di4 + w3i * dr4;
+                    out[oidx5] = w4r * dr5 - w4i * di5;
+                    out[oidx5 + 1] = w4r * di5 + w4i * dr5;
+                }
+            }
+        }
+    }
+}

src/main/java/io/github/dsheirer/dsp/filter/ChannelFilterDesigner.java

@@ -0,0 +1,148 @@
+/*
+ * *****************************************************************************
+ * Copyright (C) 2014-2026 Dennis Sheirer
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ * ****************************************************************************
+ */
+package io.github.dsheirer.dsp.filter;
+
+import io.github.dsheirer.dsp.filter.design.FilterDesignException;
+import io.github.dsheirer.dsp.filter.fir.FIRFilterSpecification;
+import io.github.dsheirer.dsp.window.WindowType;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Designs low-pass filters for complex sample channels, with a check of the designed frequency response.
+ */
+public class ChannelFilterDesigner
+{
+    private static final Logger LOGGER = LoggerFactory.getLogger(ChannelFilterDesigner.class);
+    private static final double MAXIMUM_STOP_BAND_DB = -40.0;
+    private static final double MAXIMUM_PASS_BAND_DB = 1.0;
+    private static final int FILTER_RESPONSE_CHECK_POINTS = 1024;
+    private static final int FALLBACK_FILTER_SIZING_ATTENUATION_DB = 75;
+    private static final int FALLBACK_FILTER_MAXIMUM_ATTENUATION_DB = 150;
+    private static final int FALLBACK_FILTER_ATTENUATION_STEP_DB = 15;
+
+    /**
+     * Designs the low-pass channel filter for complex samples, where the channel bandwidth spans the two-sided
+     * (positive and negative frequency) signal.  The stop band ripple provides approximately 46 dB of attenuation.
+     *
+     * The remez designer can converge on a filter that meets the specification at the design grid points but has a large
+     * response spike outside of them, so the response of the designed filter is checked before it's used.
+     *
+     * @param sampleRate of the samples to filter in hertz
+     * @param bandwidth of the channel in hertz
+     * @return filter coefficients
+     */
+    public static float[] design(double sampleRate, double bandwidth)
+    {
+        int passBandStop = (int)(bandwidth * .4);
+        int stopBandStart = (int)(bandwidth * .5);
+
+        FIRFilterSpecification specification = FIRFilterSpecification.lowPassBuilder()
+                .sampleRate(sampleRate)
+                .gridDensity(16)
+                .oddLength(true)
+                .passBandCutoff(passBandStop)
+                .passBandAmplitude(1.0)
+                .passBandRipple(0.01)
+                .stopBandStart(stopBandStart)
+                .stopBandAmplitude(0.0)
+                .stopBandRipple(0.005)
+                .build();
+
+        float[] coefficients = null;
+
+        try
+        {
+            coefficients = FilterFactory.getTaps(specification);
+        }
+        catch(FilterDesignException fde)
+        {
+            LOGGER.warn("Couldn't design remez channel filter for sample rate [" + sampleRate +
+                    "] pass frequency [" + passBandStop + "] and stop frequency [" + stopBandStart + "]");
+        }
+
+        if(coefficients == null || !isValidFilterResponse(coefficients, sampleRate, passBandStop, stopBandStart))
+        {
+            LOGGER.info("Unable to use remez filter designer for sample rate [" + sampleRate + "] pass band stop [" +
+                    passBandStop + "] and stop band start [" + stopBandStart +
+                    "] - will proceed using simple low pass filter design");
+            //Center the cutoff so the bandwidth matches the remez design and size the filter to meet the response limits.
+            for(int attenuation = FALLBACK_FILTER_SIZING_ATTENUATION_DB; attenuation <= FALLBACK_FILTER_MAXIMUM_ATTENUATION_DB;
+                attenuation += FALLBACK_FILTER_ATTENUATION_STEP_DB)
+            {
+                int length = FilterFactory.getLowPass(sampleRate, passBandStop, stopBandStart, attenuation,
+                        WindowType.HAMMING, true).length;
+                coefficients = FilterFactory.getLowPass(sampleRate, (passBandStop + stopBandStart) / 2, length, WindowType.HAMMING);
+
+                if(isValidFilterResponse(coefficients, sampleRate, passBandStop, stopBandStart))
+                {
+                    break;
+                }
+            }
+        }
+
+        return coefficients;
+    }
+
+    /**
+     * Checks the frequency response of the low-pass filter, relative to the response at DC.
+     * @param coefficients of the filter
+     * @param sampleRate of the filter in hertz
+     * @param passBandStop frequency in hertz
+     * @param stopBandStart frequency in hertz
+     * @return true if the pass band and stop band responses are within limits, through to half the sample rate.
+     */
+    public static boolean isValidFilterResponse(float[] coefficients, double sampleRate, int passBandStop, int stopBandStart)
+    {
+        double dc = getResponseDb(coefficients, 0.0, sampleRate);
+        double nyquist = sampleRate / 2.0;
+
+        for(int x = 0; x <= FILTER_RESPONSE_CHECK_POINTS; x++)
+        {
+            double frequency = nyquist * x / FILTER_RESPONSE_CHECK_POINTS;
+            double response = getResponseDb(coefficients, frequency, sampleRate) - dc;
+
+            if((frequency <= passBandStop && response > MAXIMUM_PASS_BAND_DB) ||
+               (frequency >= stopBandStart && response > MAXIMUM_STOP_BAND_DB))
+            {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    /**
+     * Calculates the magnitude response of the filter at the specified frequency.
+     */
+    public static double getResponseDb(float[] coefficients, double frequency, double sampleRate)
+    {
+        double radians = 2.0 * Math.PI * frequency / sampleRate;
+        double real = 0.0;
+        double imaginary = 0.0;
+
+        for(int x = 0; x < coefficients.length; x++)
+        {
+            real += coefficients[x] * Math.cos(radians * x);
+            imaginary += coefficients[x] * Math.sin(radians * x);
+        }
+
+        return 20.0 * Math.log10(Math.hypot(real, imaginary));
+    }
+}

src/main/java/io/github/dsheirer/dsp/filter/channelizer/ComplexPolyphaseChannelizerM2.java

@@ -18,6 +18,7 @@
  */
 package io.github.dsheirer.dsp.filter.channelizer;
 
+import io.github.dsheirer.dsp.fft.MixedRadixComplexFFT;
 import io.github.dsheirer.dsp.filter.FilterFactory;
 import io.github.dsheirer.dsp.filter.design.FilterDesignException;
 import io.github.dsheirer.sample.complex.InterleavedComplexSamples;
@@ -27,7 +28,6 @@ import java.util.Arrays;
 import java.util.Queue;
 import java.util.concurrent.ArrayBlockingQueue;
 import org.apache.commons.math3.util.FastMath;
-import org.jtransforms.fft.FloatFFT_1D;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -85,7 +85,8 @@ public class ComplexPolyphaseChannelizerM2 extends AbstractComplexPolyphaseChann
 
     //Sized to process 40 times per second
     private IFFTProcessorDispatcher mIFFTProcessorDispatcher = new IFFTProcessorDispatcher(25);
-    private FloatFFT_1D mFFT;
+    //Allocation-free IFFT.  Only used by the IFFT processor dispatcher thread since it reuses a scratch buffer.
+    private MixedRadixComplexFFT mFFT;
     private ChannelDFT mChannelDFT;
     private float[] mInlineSamples;
     private float[] mInlineFilter;
@@ -453,7 +454,7 @@ public class ComplexPolyphaseChannelizerM2 extends AbstractComplexPolyphaseChann
     private void init(float[] coefficients)
     {
         int channelCount = getChannelCount();
-        mFFT = new FloatFFT_1D(channelCount);
+        mFFT = new MixedRadixComplexFFT(channelCount);
         mChannelDFT = ChannelDFTFactory.getChannelDFT(channelCount);
         int bufferLength = getSubChannelCount() * mTapsPerChannel;
         mSamplesPerBlock = channelCount; //Same as subChannelCount / 2
@@ -505,7 +506,7 @@ public class ComplexPolyphaseChannelizerM2 extends AbstractComplexPolyphaseChann
                         for(int offset = 0; offset < samples.length; offset += blockLength)
                         {
                             //Rotate each of the channels to the correct phase using the IFFT
-                            mFFT.complexInverse(samples, offset, true);
+                            mFFT.inverse(samples, offset, true);
                         }
                     }
 

src/main/java/io/github/dsheirer/dsp/filter/fir/remez/RemezFIRFilterDesigner.java

@@ -100,7 +100,7 @@ public class RemezFIRFilterDesigner
     	}
     	catch( FilterDesignException fde )
     	{
-    		mLog.error( "Filter design error - couldn't find extremal indices at count [" + 
+    		mLog.warn( "Filter design error - couldn't find extremal indices at count [" + 
     				iterationCount + "] try changing filter order up/down from [" +
     				mSpecification.getOrder() + "]" );
     		

src/main/java/io/github/dsheirer/dsp/fm/SquelchingFMDemodulator.java

@@ -1,161 +0,0 @@
-/*
- * *****************************************************************************
- * Copyright (C) 2014-2023 Dennis Sheirer
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>
- * ****************************************************************************
- */
-
-package io.github.dsheirer.dsp.fm;
-
-import io.github.dsheirer.dsp.magnitude.IMagnitudeCalculator;
-import io.github.dsheirer.dsp.magnitude.MagnitudeFactory;
-import io.github.dsheirer.dsp.squelch.AdaptiveSquelch;
-import io.github.dsheirer.sample.Listener;
-import io.github.dsheirer.source.SourceEvent;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-/**
- * FM Demodulator for demodulating complex samples and producing demodulated floating point samples.
- *
- * Implements listener of source events to process runtime squelch threshold change request events
- * which are forwarded to the power squelch control.
- */
-public class SquelchingFMDemodulator implements ISquelchingDemodulator, Listener<SourceEvent>
-{
-    private static final Logger mLog = LoggerFactory.getLogger(SquelchingFMDemodulator.class);
-    private static final float ZERO = 0.0f;
-    private final AdaptiveSquelch mAdaptiveSquelch;
-    private final IMagnitudeCalculator mMagnitude = MagnitudeFactory.getMagnitudeCalculator();
-    private final IDemodulator mFmDemodulator = FmDemodulatorFactory.getFmDemodulator();
-    private boolean mSquelchChanged = false;
-
-    /**
-     * Creates an FM demodulator instance with a default gain of 1.0.
-     *
-     * @param alpha decay value of the single pole IIR filter in range: 0.0 - 1.0.  The smaller the alpha value,
-     * the slower the squelch response.
-     * @param squelchThreshold in decibels.  Signal power must exceed this threshold value for unsquelch.
-     * causes immediate mute and unmute.  Set to higher count to prevent mute/unmute flapping.
-     * @param squelchAutoTrack to enable the squelch noise floor auto-tracking feature.
-     */
-    public SquelchingFMDemodulator(float alpha, float squelchThreshold, boolean squelchAutoTrack)
-    {
-        mAdaptiveSquelch = new AdaptiveSquelch(alpha, squelchThreshold, squelchAutoTrack);
-    }
-
-    /**
-     * Set or update the sample rate for the squelch to adjust the power level notification rate.
-     * @param sampleRate in hertz
-     */
-    public void setSampleRate(int sampleRate)
-    {
-        mAdaptiveSquelch.setSampleRate(sampleRate);
-    }
-
-    /**
-     * Registers the listener to receive notifications of squelch change events from the power squelch.
-     */
-    public void setSourceEventListener(Listener<SourceEvent> listener)
-    {
-        mAdaptiveSquelch.setSourceEventListener(listener);
-    }
-
-    /**
-     * Demodulates the complex (I/Q) sample arrays
-     * @param i inphase samples
-     * @param q quadrature samples
-     * @return demodulated real samples
-     */
-    @Override
-    public float[] demodulate(float[] i, float[] q)
-    {
-        setSquelchChanged(false);
-
-        float[] demodulated = mFmDemodulator.demodulate(i, q);
-        float[] magnitude = mMagnitude.calculate(i, q);
-
-        for(int x = 0; x < magnitude.length; x++)
-        {
-            mAdaptiveSquelch.process(magnitude[x]);
-
-            if(!(mAdaptiveSquelch.isUnmuted()))
-            {
-                demodulated[x] = ZERO;
-            }
-
-            if(mAdaptiveSquelch.isSquelchChanged())
-            {
-                setSquelchChanged(true);
-            }
-        }
-
-        return demodulated;
-    }
-
-    /**
-     * Sets the threshold for squelch control
-     * @param threshold (dB)
-     */
-    public void setSquelchThreshold(float threshold)
-    {
-        mAdaptiveSquelch.setSquelchThreshold(threshold);
-    }
-
-    @Override
-    public void setSquelchAutoTrack(boolean autoTrack)
-    {
-        mAdaptiveSquelch.setSquelchAutoTrack(autoTrack);
-    }
-
-    /**
-     * Indicates if the squelch state has changed during the processing of buffer(s)
-     */
-    public boolean isSquelchChanged()
-    {
-        return mSquelchChanged;
-    }
-
-    /**
-     * Sets or resets the squelch changed flag.
-     */
-    private void setSquelchChanged(boolean changed)
-    {
-        mSquelchChanged = changed;
-    }
-
-    /**
-     * Indicates if the squelch state is currently muted
-     */
-    public boolean isMuted()
-    {
-        return mAdaptiveSquelch.isMuted();
-    }
-
-    @Override
-    public void receive(SourceEvent sourceEvent)
-    {
-        switch(sourceEvent.getEvent())
-        {
-            //Only forward squelch threshold and auto-track current & change requests
-            case REQUEST_CURRENT_SQUELCH_THRESHOLD:
-            case REQUEST_CHANGE_SQUELCH_THRESHOLD:
-            case REQUEST_CURRENT_SQUELCH_AUTO_TRACK:
-            case REQUEST_CHANGE_SQUELCH_AUTO_TRACK:
-                mAdaptiveSquelch.receive(sourceEvent);
-                break;
-        }
-    }
-}

src/main/java/io/github/dsheirer/dsp/squelch/AdaptiveSquelch.java

@@ -19,66 +19,106 @@
 
 package io.github.dsheirer.dsp.squelch;
 
-import io.github.dsheirer.dsp.filter.iir.SinglePoleIirFilter;
 import io.github.dsheirer.sample.Listener;
 import io.github.dsheirer.source.SourceEvent;
-import java.time.Duration;
+import java.util.Arrays;
 import org.apache.commons.math3.util.FastMath;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 /**
- * Adaptive squelch control that optionally tracks the noise floor and auto-adjusts squelch threshold.
+ * Adaptive power squelch control that optionally tracks the noise floor and auto-adjusts squelch threshold.
+ *
+ * Signal power is measured in 5 millisecond blocks so that all timing is independent of the sample rate.  The squelch
+ * opens after consecutive blocks at or above the threshold.  It closes on a 20 millisecond power average that spans at
+ * least one cycle of the lowest voice frequencies, so that modulation doesn't look like a loss of signal, and which
+ * responds in a fixed time regardless of how strong the signal was.
+ *
+ * Closing occurs in two steps.  Audio is disabled as soon as the power average falls below the close threshold, which
+ * limits the noise tail, while the squelch stays open for a hang period to bridge a brief signal fade without ending
+ * the call.
+ *
+ * When auto-track is enabled, the noise floor is the lowest power from the recent intervals that look like noise, using
+ * the ratio mean(power^2) / mean(power)^2, which is 2.0 for gaussian noise and approaches 1.0 for a steady carrier.  The
+ * threshold is held at a margin over the noise floor, so a threshold below the noise floor can't latch the squelch open.
+ * The squelch stays closed until the first noise floor measurement is complete.  A signal that doesn't look like noise
+ * is excluded from the noise floor unless it persists for the carrier timeout, after which it's treated as the noise
+ * floor so that a dead carrier doesn't hold the squelch open.  The noise floor recovers when the carrier ends.  A carrier
+ * with voice modulation, such as a continuous broadcast, doesn't time out, and a timed out carrier that develops voice
+ * modulation is removed from the noise floor.
  *
  * Initially modeled on: https://github.com/gnuradio/gnuradio/blob/master/gr-analog/lib/simple_squelch_cc_impl.cc
  */
 public class AdaptiveSquelch implements Listener<SourceEvent>
 {
     private static final Logger mLog = LoggerFactory.getLogger(AdaptiveSquelch.class);
-    private static final long AUTO_ADJUST_PERIOD_MS = Duration.ofSeconds(5).toMillis();
-    private SinglePoleIirFilter mFilter;
+    private static final double DEFAULT_SAMPLE_RATE = 50000.0;
+    private static final double BLOCK_SECONDS = 0.005;
+    private static final int OPEN_BLOCKS = 2; //10 milliseconds
+    private static final int CLOSE_AVERAGE_BLOCKS = 4; //20 milliseconds
+    private static final int HANG_BLOCKS = 20; //100 milliseconds
+    private static final int POWER_INTERVAL_BLOCKS = 100; //500 milliseconds
+    private static final int NOISE_WINDOW_INTERVALS = 20; //10 seconds
+    private static final int CARRIER_TIMEOUT_INTERVALS = 120; //60 seconds
+    private static final int MINIMUM_VOICE_INTERVALS = 3;
+    private static final double NOISE_POWER_RATIO = 1.85;
+    private static final float MINIMUM_SQUELCH_MARGIN = 4.0f; //6 dB
+    private static final float CLOSE_THRESHOLD_RATIO = 0.5f; //3 dB below the open threshold
+    private final float[] mCloseBlocks = new float[CLOSE_AVERAGE_BLOCKS];
+    private int mCloseBlockPointer = 0;
+    private float mCloseAccumulator = 0.0f;
+    private int mBlockSize = (int)Math.round(DEFAULT_SAMPLE_RATE * BLOCK_SECONDS);
+    private int mBlockSampleCount = 0;
+    private float mBlockAccumulator = 0.0f;
+    private int mOpenCount = 0;
+    private int mHangCount = 0;
     private float mPower = 0.0f;
-    private boolean mSquelch;
-    private float mSquelchThreshold;
+    private double mIntervalPower = 0.0;
+    private double mIntervalPowerSquared = 0.0;
+    private int mIntervalSampleCount = 0;
+    private int mIntervalBlockCount = 0;
+    private boolean mFirstIntervalComplete = false;
+    private final float[] mNoiseHistory = new float[NOISE_WINDOW_INTERVALS];
+    private int mNoiseHistoryPointer = 0;
+    private int mNoiseHistoryCount = 0;
+    private int mCarrierIntervalCount = 0;
+    private int mVoiceIntervalCount = 0;
+    private boolean mCarrierTimedOut = false;
+    private boolean mCarrierDetected = false;
+    private Float mNoiseFloorBeforeCarrier;
+    private final VoiceModulationDetector mVoiceModulationDetector;
     private Float mNoiseFloor;
-    private float mSquelchBuffer;
+    private Float mLowestNoiseFloor;
+    private float mUserThreshold;
+    private boolean mSquelch = true;
+    private float mSquelchThreshold;
     private boolean mSquelchChanged = false;
-    private int mPowerLevelBroadcastCount = 0;
-    private int mPowerLevelBroadcastThreshold;
     private boolean mAutoTrackNoiseFloor;
-    private long mLastAutoAdjustTimestamp;
     private Listener<SourceEvent> mSourceEventListener;
 
     /**
      * Constructs an instance
      *
-     * Testing against a 12.5 kHz analog FM modulated signal, the following parameters provided a
-     * good responsiveness.  A threshold of -80.0 dB seemed to trigger significant flapping during un-squelching.
-     *   - alpha: 0.0001
-     *   - threshold: 78.0 dB
-     *
-     * @param alpha decay value of the single pole IIR filter in range: 0.0 - 1.0.  The smaller the alpha value,
-     * the slower the squelch response.
      * @param squelchThreshold in decibels.  Signal power must exceed this threshold value for unsquelch.
      * @param autoTrack the noise floor when squelched and periodically readjust the squelch threshold.
+     * @param bandwidth of the channel in hertz
      */
-    public AdaptiveSquelch(float alpha, float squelchThreshold, boolean autoTrack)
+    public AdaptiveSquelch(float squelchThreshold, boolean autoTrack, double bandwidth)
     {
-        mFilter = new SinglePoleIirFilter(alpha);
+        mVoiceModulationDetector = new VoiceModulationDetector(DEFAULT_SAMPLE_RATE, bandwidth,
+                (int)Math.round(DEFAULT_SAMPLE_RATE * BLOCK_SECONDS) * POWER_INTERVAL_BLOCKS);
         setSquelchThreshold(squelchThreshold);
         mAutoTrackNoiseFloor = autoTrack;
-        mLastAutoAdjustTimestamp = System.currentTimeMillis();
-        mPowerLevelBroadcastThreshold = 25000; //Based on a default sample rate of 50 kHz, so 2x/second
     }
 
     /**
-     * Sets the sample rate to effect the frequency of power level notifications where the notifications are
-     * sent twice a second.
+     * Sets the sample rate to size the power measurement blocks.
      * @param sampleRate in hertz
      */
     public void setSampleRate(int sampleRate)
     {
-        mPowerLevelBroadcastThreshold = sampleRate / 2;
+        mBlockSize = Math.max(1, (int)Math.round(sampleRate * BLOCK_SECONDS));
+        mVoiceModulationDetector.configure(sampleRate, mBlockSize * POWER_INTERVAL_BLOCKS);
     }
 
     /**
@@ -132,32 +172,36 @@ public class AdaptiveSquelch implements Listener<SourceEvent>
     }
 
     /**
-     * Sets the squelch threshold
+     * Sets the squelch threshold.  With auto-track enabled, the threshold is treated as a margin over the current noise
+     * floor, subject to the minimum squelch margin.  The margin is stored relative to the lowest observed noise floor so
+     * that a change made while a timed out carrier has raised the noise floor applies once that carrier ends.
      * @param squelchThreshold in decibels
      */
     public void setSquelchThreshold(float squelchThreshold)
     {
-        float squelchThresholdDb = fromDb(squelchThreshold);
-        setSquelchThreshold(squelchThresholdDb, true);
+        float threshold = fromDb(squelchThreshold);
+
+        if(mAutoTrackNoiseFloor && mNoiseFloor != null)
+        {
+            mUserThreshold = mLowestNoiseFloor * Math.max(MINIMUM_SQUELCH_MARGIN, threshold / mNoiseFloor);
+            updateTrackedThreshold();
+        }
+        else
+        {
+            mUserThreshold = threshold;
+            applySquelchThreshold(mUserThreshold);
+        }
     }
 
     /**
-     * Sets the squelch threshold.  This method is synchronized to coordinate changes requested by the user/UI thread
+     * Applies the squelch threshold.  This method is synchronized to coordinate changes requested by the user/UI thread
      * and auto-track changes made by the stream processing thread.
      *
      * @param squelchThreshold value
-     * @param resetNoiseFloor to reset the noise floor and squelch threshold
      */
-    private synchronized void setSquelchThreshold(float squelchThreshold, boolean resetNoiseFloor)
+    private synchronized void applySquelchThreshold(float squelchThreshold)
     {
         mSquelchThreshold = squelchThreshold;
-
-        if(resetNoiseFloor)
-        {
-            //Set noise floor to null so that both the noise floor and the squelch buffer get updated after first power reading
-            mNoiseFloor = null;
-        }
-
         broadcast(SourceEvent.squelchThreshold(null, getSquelchThreshold()));
     }
 
@@ -183,59 +227,231 @@ public class AdaptiveSquelch implements Listener<SourceEvent>
     }
 
     /**
-     * Processes a complex IQ sample and changes squelch state when the signal power is above or below the
-     * threshold value.
+     * Processes a complex IQ sample and updates the squelch state at the end of each power measurement block.
      * @param magnitude of a complex sample (inphase * inphase + quadrature * quadrature)
      */
     public void process(float magnitude)
     {
-        mPower = mFilter.filter(magnitude);
+        mBlockAccumulator += magnitude;
+        mBlockSampleCount++;
+        mIntervalPower += magnitude;
+        mIntervalPowerSquared += (double)magnitude * magnitude;
+        mIntervalSampleCount++;
 
-        if(mSquelch && mPower >= mSquelchThreshold)
+        //Voice detection is only needed for a carrier, so that channels with only noise don't incur this cost.
+        if(mCarrierDetected)
         {
-            setSquelch(false);
-        }
-        else if(!mSquelch && mPower < mSquelchThreshold)
-        {
-            setSquelch(true);
+            mVoiceModulationDetector.receive((float)Math.sqrt(magnitude));
         }
 
-        mPowerLevelBroadcastCount++;
-        if(mPowerLevelBroadcastCount % mPowerLevelBroadcastThreshold == 0)
+        if(mBlockSampleCount >= mBlockSize)
         {
-            mPowerLevelBroadcastCount = 0;
-            broadcast(SourceEvent.channelPowerLevel(null, 10.0 * Math.log10(mPower)));
-
-            if(mSquelch)
-            {
-                adjustSquelchThreshold();
-            }
+            float power = mBlockAccumulator / mBlockSampleCount;
+            mBlockAccumulator = 0.0f;
+            mBlockSampleCount = 0;
+            processBlock(power);
         }
     }
 
     /**
-     * With the user specified squelch threshold, establishes a squelch buffer (delta) from the actual noise floor and
-     * then automatically updates the squelch threshold to be the current noise floor plus this threshold value.
-     *
-     * Note: this method should only be invoked from a squelch (true) state.
+     * Updates the squelch state from a block power measurement.
+     * @param power of the block
      */
-    private void adjustSquelchThreshold()
+    private void processBlock(float power)
     {
-        if(mAutoTrackNoiseFloor)
+        mCloseAccumulator += power - mCloseBlocks[mCloseBlockPointer];
+        mCloseBlocks[mCloseBlockPointer] = power;
+        mCloseBlockPointer = (mCloseBlockPointer + 1) % CLOSE_AVERAGE_BLOCKS;
+
+        if(mSquelch)
         {
-            if(mNoiseFloor == null)
+            //With auto-track, the threshold isn't reliable until there's a noise floor measurement.
+            boolean ready = mFirstIntervalComplete || !mAutoTrackNoiseFloor;
+            mOpenCount = (ready && power >= mSquelchThreshold) ? mOpenCount + 1 : 0;
+
+            if(mOpenCount >= OPEN_BLOCKS)
             {
-                //We set the squelch buffer just once, after the squelch threshold is set and noise floor is set to null
-                mSquelchBuffer = mSquelchThreshold - mPower;
+                mOpenCount = 0;
+                mHangCount = 0;
+                //Seed the close average so that it doesn't start with the blocks from before the signal arrived.
+                Arrays.fill(mCloseBlocks, power);
+                mCloseAccumulator = power * CLOSE_AVERAGE_BLOCKS;
+                setSquelch(false);
+            }
+        }
+        else if(mCloseAccumulator / CLOSE_AVERAGE_BLOCKS >= mSquelchThreshold * CLOSE_THRESHOLD_RATIO)
+        {
+            mHangCount = 0;
+        }
+        else
+        {
+            mHangCount++;
+
+            if(mHangCount >= HANG_BLOCKS)
+            {
+                setSquelch(true);
+            }
+        }
+
+        updatePowerInterval();
+    }
+
+    /**
+     * Counts power blocks to provide periodic power level notifications and noise floor updates.
+     */
+    private void updatePowerInterval()
+    {
+        mIntervalBlockCount++;
+
+        if(mIntervalBlockCount >= POWER_INTERVAL_BLOCKS)
+        {
+            double mean = mIntervalPower / mIntervalSampleCount;
+            mPower = (float)mean;
+            broadcast(SourceEvent.channelPowerLevel(null, 10.0 * Math.log10(mPower)));
+
+            if(mAutoTrackNoiseFloor && mean > 0.0)
+            {
+                updateNoiseFloor(mIntervalPowerSquared / mIntervalSampleCount / (mean * mean));
             }
 
-            mNoiseFloor = mPower;
+            mFirstIntervalComplete = true;
+            mIntervalPower = 0.0;
+            mIntervalPowerSquared = 0.0;
+            mIntervalSampleCount = 0;
+            mIntervalBlockCount = 0;
+        }
+    }
 
-            if((System.currentTimeMillis() - mLastAutoAdjustTimestamp) > AUTO_ADJUST_PERIOD_MS)
-            {
-                setSquelchThreshold(mNoiseFloor + mSquelchBuffer, false);
-                mLastAutoAdjustTimestamp = System.currentTimeMillis();
-            }
+    /**
+     * Updates the noise floor history from the current interval power and updates the squelch threshold.
+     * @param powerRatio mean(power^2) / mean(power)^2 for the interval
+     */
+    private void updateNoiseFloor(double powerRatio)
+    {
+        boolean voice = mVoiceModulationDetector.analyze();
+        mCarrierDetected = powerRatio < NOISE_POWER_RATIO;
+
+        if(mCarrierDetected)
+        {
+            updateCarrier(voice);
+        }
+        else
+        {
+            resetCarrierTracking();
+            mCarrierTimedOut = false;
+            mNoiseFloorBeforeCarrier = null;
+            addNoisePower(mPower);
+        }
+
+        if(mNoiseHistoryCount > 0)
+        {
+            updateTrackedThreshold();
+        }
+    }
+
+    /**
+     * Updates the carrier timeout from an interval that doesn't look like noise.  A carrier that lasts for the timeout
+     * period is treated as the noise floor, unless it has voice modulation.
+     * @param voice true if voice modulation was detected in this interval
+     */
+    private void updateCarrier(boolean voice)
+    {
+        mCarrierIntervalCount++;
+
+        if(voice)
+        {
+            mVoiceIntervalCount++;
+        }
+
+        boolean hasVoice = mVoiceIntervalCount >= MINIMUM_VOICE_INTERVALS;
+
+        if(mCarrierTimedOut && hasVoice)
+        {
+            restoreNoiseFloor();
+            resetCarrierTracking();
+        }
+        else if(mCarrierTimedOut)
+        {
+            addNoisePower(mPower);
+        }
+        else if(mCarrierIntervalCount >= CARRIER_TIMEOUT_INTERVALS && !hasVoice)
+        {
+            //Replace the history so that the carrier takes effect immediately.
+            mCarrierTimedOut = true;
+            mNoiseFloorBeforeCarrier = mNoiseFloor;
+            mNoiseHistoryCount = 0;
+            addNoisePower(mPower);
+        }
+
+        if(mCarrierIntervalCount >= CARRIER_TIMEOUT_INTERVALS)
+        {
+            resetCarrierTracking();
+        }
+    }
+
+    /**
+     * Resets the counts for the current carrier evaluation period.
+     */
+    private void resetCarrierTracking()
+    {
+        mCarrierIntervalCount = 0;
+        mVoiceIntervalCount = 0;
+    }
+
+    /**
+     * Removes a timed out carrier from the noise floor, restoring the noise floor from before the carrier.  If there's
+     * no noise floor from before the carrier, the user threshold is restored until the noise floor can be measured.
+     */
+    private void restoreNoiseFloor()
+    {
+        mCarrierTimedOut = false;
+        mNoiseHistoryCount = 0;
+
+        if(mNoiseFloorBeforeCarrier != null)
+        {
+            addNoisePower(mNoiseFloorBeforeCarrier);
+            mNoiseFloorBeforeCarrier = null;
+        }
+        else
+        {
+            mNoiseFloor = null;
+            mLowestNoiseFloor = null;
+            applySquelchThreshold(mUserThreshold);
+        }
+    }
+
+    /**
+     * Adds the power to the noise history.
+     * @param power of the interval
+     */
+    private void addNoisePower(float power)
+    {
+        mNoiseHistory[mNoiseHistoryPointer] = power;
+        mNoiseHistoryPointer = (mNoiseHistoryPointer + 1) % NOISE_WINDOW_INTERVALS;
+        mNoiseHistoryCount = Math.min(mNoiseHistoryCount + 1, NOISE_WINDOW_INTERVALS);
+    }
+
+    /**
+     * Sets the squelch threshold to the margin over the current noise floor, where the margin is the larger of the
+     * minimum margin and the amount that the user threshold exceeds the lowest observed noise floor.
+     */
+    private void updateTrackedThreshold()
+    {
+        float noiseFloor = Float.MAX_VALUE;
+
+        for(int x = 0; x < mNoiseHistoryCount; x++)
+        {
+            int index = (mNoiseHistoryPointer - 1 - x + NOISE_WINDOW_INTERVALS) % NOISE_WINDOW_INTERVALS;
+            noiseFloor = Math.min(noiseFloor, mNoiseHistory[index]);
+        }
+
+        mNoiseFloor = noiseFloor;
+        mLowestNoiseFloor = (mLowestNoiseFloor == null) ? noiseFloor : Math.min(mLowestNoiseFloor, noiseFloor);
+        float threshold = noiseFloor * Math.max(MINIMUM_SQUELCH_MARGIN, mUserThreshold / mLowestNoiseFloor);
+
+        if(threshold != mSquelchThreshold)
+        {
+            applySquelchThreshold(threshold);
         }
     }
 
@@ -255,6 +471,15 @@ public class AdaptiveSquelch implements Listener<SourceEvent>
         return !mSquelch;
     }
 
+    /**
+     * Indicates if audio should be passed.  This is false during the hang period, while the signal is below the close
+     * threshold but the squelch is still open.
+     */
+    public boolean isAudioEnabled()
+    {
+        return !mSquelch && mHangCount == 0;
+    }
+
     /**
      * Current power level
      * @return current power level in dB
@@ -309,6 +534,7 @@ public class AdaptiveSquelch implements Listener<SourceEvent>
         {
             case REQUEST_CHANGE_SQUELCH_THRESHOLD:
                 setSquelchThreshold(sourceEvent.getValue().floatValue());
+                broadcast(SourceEvent.squelchUserThreshold(toDb(mUserThreshold)));
                 break;
             case REQUEST_CURRENT_SQUELCH_THRESHOLD:
                 broadcast(SourceEvent.squelchThreshold(null, getSquelchThreshold()));

src/main/java/io/github/dsheirer/dsp/squelch/NoiseSquelch.java

@@ -1,6 +1,6 @@
 /*
  * *****************************************************************************
- * Copyright (C) 2014-2025 Dennis Sheirer
+ * Copyright (C) 2014-2026 Dennis Sheirer
  *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -23,9 +23,11 @@ import io.github.dsheirer.audio.squelch.SquelchState;
 import io.github.dsheirer.dsp.filter.FilterFactory;
 import io.github.dsheirer.dsp.filter.fir.real.IRealFilter;
 import io.github.dsheirer.dsp.filter.fir.real.RealFIRFilter;
+import io.github.dsheirer.dsp.fm.ScalarFMDemodulator;
 import io.github.dsheirer.dsp.window.WindowType;
 import io.github.dsheirer.sample.Listener;
 import java.util.Arrays;
+import java.util.Random;
 
 /**
  * Squelch processor for unfiltered, demodulated audio that operators by high-pass filtering the audio to remove below
@@ -47,6 +49,12 @@ public class NoiseSquelch implements INoiseSquelchController
     public static final float DEFAULT_NOISE_CLOSE_THRESHOLD = 0.19f;
     public static final float MINIMUM_NOISE_THRESHOLD = 0.1f;
     public static final float MAXIMUM_NOISE_THRESHOLD = 0.5f;
+    private static final int HIGH_PASS_FILTER_CUTOFF = 3000;
+    private static final int HIGH_PASS_FILTER_LENGTH = 31;
+    //Noise-only variance of a 12.5 kHz channel at 25 kHz, which is the reference that the noise thresholds are set against.
+    private static final float REFERENCE_NOISE_VARIANCE = 0.298f;
+    private static final int NOISE_MEASUREMENT_SETTLING_SAMPLES = 512;
+    private static final long NOISE_MEASUREMENT_SEED = 1L;
     private float[] mFilteredBuffer = new float[0];
     private float[] mAudioBuffer = new float[0];
     private float mMeanAccumulator;
@@ -227,7 +235,7 @@ public class NoiseSquelch implements INoiseSquelchController
      */
     public void setSampleRate(double sampleRate)
     {
-        float[] coefficients = FilterFactory.getHighPass((int)sampleRate, 3000, 31, WindowType.BLACKMAN_HARRIS_7);
+        float[] coefficients = getHighPassCoefficients(sampleRate);
         mHighPassFilter = new RealFIRFilter(coefficients);
         mVarianceWindowSize = (int)(sampleRate * (VARIANCE_CALCULATION_WINDOW_MILLISECONDS / 1000.0));
 
@@ -235,6 +243,88 @@ public class NoiseSquelch implements INoiseSquelchController
         mAudioBufferFilterDelay = (int)Math.ceil(coefficients.length / 2.0);
     }
 
+    /**
+     * Sets the sample rate for the incoming demodulated audio sample stream and normalizes the noise measurement for
+     * the channel filter applied ahead of the FM demodulator.  The demodulated noise variance depends on the ratio of
+     * the channel bandwidth to the sample rate and, without normalization, a narrow channel can have a noise-only
+     * variance that is below the noise close threshold, which holds the squelch open.  The noise measurement is scaled
+     * up so that a noise-only channel measures at the reference noise variance.  The noise measurement is never scaled
+     * down, so channels that are already above the reference are unchanged.
+     *
+     * @param sampleRate of the sample stream.
+     * @param channelFilter coefficients of the low-pass channel filter applied ahead of the FM demodulator.
+     */
+    public void setSampleRate(double sampleRate, float[] channelFilter)
+    {
+        setSampleRate(sampleRate);
+
+        float gain = (float)Math.sqrt(Math.max(1.0f, REFERENCE_NOISE_VARIANCE / getNoiseVariance(sampleRate, channelFilter)));
+        float[] coefficients = getHighPassCoefficients(sampleRate);
+
+        for(int x = 0; x < coefficients.length; x++)
+        {
+            coefficients[x] *= gain;
+        }
+
+        mHighPassFilter = new RealFIRFilter(coefficients);
+    }
+
+    /**
+     * Creates the high-pass filter that isolates the noise in the demodulated audio.
+     * @param sampleRate of the demodulated audio.
+     * @return filter coefficients
+     */
+    private static float[] getHighPassCoefficients(double sampleRate)
+    {
+        return FilterFactory.getHighPass((int)sampleRate, HIGH_PASS_FILTER_CUTOFF, HIGH_PASS_FILTER_LENGTH,
+                WindowType.BLACKMAN_HARRIS_7);
+    }
+
+    /**
+     * Measures the variance that the squelch sees when the channel contains only noise, using one second of a
+     * repeatable sequence of complex noise samples.
+     *
+     * @param sampleRate of the channel.
+     * @param channelFilter coefficients of the low-pass channel filter applied ahead of the FM demodulator.
+     * @return noise-only variance of the demodulated, high-pass filtered samples.
+     */
+    public static float getNoiseVariance(double sampleRate, float[] channelFilter)
+    {
+        int length = (int)sampleRate;
+        float[] i = new float[length];
+        float[] q = new float[length];
+        Random random = new Random(NOISE_MEASUREMENT_SEED);
+
+        for(int x = 0; x < length; x++)
+        {
+            i[x] = (float)random.nextGaussian();
+            q[x] = (float)random.nextGaussian();
+        }
+
+        float[] demodulated = new ScalarFMDemodulator().demodulate(new RealFIRFilter(channelFilter.clone()).filter(i),
+                new RealFIRFilter(channelFilter.clone()).filter(q));
+        float[] noise = new RealFIRFilter(getHighPassCoefficients(sampleRate)).filter(demodulated);
+
+        int count = length - NOISE_MEASUREMENT_SETTLING_SAMPLES;
+        double mean = 0.0;
+
+        for(int x = NOISE_MEASUREMENT_SETTLING_SAMPLES; x < length; x++)
+        {
+            mean += noise[x];
+        }
+
+        mean /= count;
+
+        double variance = 0.0;
+
+        for(int x = NOISE_MEASUREMENT_SETTLING_SAMPLES; x < length; x++)
+        {
+            variance += (noise[x] - mean) * (noise[x] - mean);
+        }
+
+        return (float)(variance / count);
+    }
+
     public void process(float[] samples)
     {
         float[] filtered = mHighPassFilter.filter(samples);

src/main/java/io/github/dsheirer/dsp/squelch/VoiceModulationDetector.java

@@ -0,0 +1,158 @@
+/*
+ * *****************************************************************************
+ * Copyright (C) 2014-2026 Dennis Sheirer
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ * ****************************************************************************
+ */
+package io.github.dsheirer.dsp.squelch;
+
+import org.jtransforms.fft.FloatFFT_1D;
+
+/**
+ * Detects voice modulation on the envelope of a steady AM carrier.  The noise on a carrier's envelope is spectrally flat
+ * across the channel, while voice energy is concentrated in the lower part of the voice band.  The detector compares
+ * the average spectral density of a low and a high band, with band edges limited to the channel pass band.
+ *
+ * A single detection isn't proof of a voice transmission and a pause in speech isn't proof of a dead carrier, so the
+ * results should be evaluated across a longer period.
+ */
+public class VoiceModulationDetector
+{
+    private static final float MAXIMUM_FREQUENCY = 2300.0f;
+    private static final float MAXIMUM_FREQUENCY_BANDWIDTH_RATIO = 0.38f;
+    private static final float LOW_BAND_START = 300.0f;
+    private static final float LOW_BAND_STOP_RATIO = 0.52f;
+    private static final float HIGH_BAND_START_RATIO = 0.65f;
+    private static final double DETECTION_THRESHOLD_DB = 5.0;
+
+    private final double mBandwidth;
+    private FloatFFT_1D mFFT;
+    private float[] mEnvelope;
+    private float[] mWindow;
+    private int mLowStartBin;
+    private int mLowStopBin;
+    private int mHighStartBin;
+    private int mHighStopBin;
+    private int mPointer = 0;
+
+    /**
+     * Constructs an instance
+     * @param sampleRate of the envelope samples in hertz
+     * @param bandwidth of the channel in hertz, spanning positive and negative frequencies
+     * @param analysisSamples maximum number of samples per analysis.  This is reduced to a power of 2.
+     */
+    public VoiceModulationDetector(double sampleRate, double bandwidth, int analysisSamples)
+    {
+        mBandwidth = bandwidth;
+        configure(sampleRate, analysisSamples);
+    }
+
+    /**
+     * Updates the sample rate and resets this detector.
+     * @param sampleRate of the envelope samples in hertz
+     * @param analysisSamples maximum number of samples per analysis.  This is reduced to a power of 2.
+     */
+    public final void configure(double sampleRate, int analysisSamples)
+    {
+        int length = Integer.highestOneBit(analysisSamples);
+        mFFT = new FloatFFT_1D(length);
+        mEnvelope = new float[length];
+        mWindow = new float[length];
+
+        for(int x = 0; x < length; x++)
+        {
+            mWindow[x] = (float)(0.5 - 0.5 * Math.cos(2.0 * Math.PI * x / length));
+        }
+
+        float stop = Math.min(MAXIMUM_FREQUENCY, (float)mBandwidth * MAXIMUM_FREQUENCY_BANDWIDTH_RATIO);
+        double hertzPerBin = sampleRate / length;
+        mLowStartBin = (int)Math.ceil(LOW_BAND_START / hertzPerBin);
+        mLowStopBin = (int)(stop * LOW_BAND_STOP_RATIO / hertzPerBin);
+        mHighStartBin = (int)Math.ceil(stop * HIGH_BAND_START_RATIO / hertzPerBin);
+        mHighStopBin = (int)(stop / hertzPerBin);
+        reset();
+    }
+
+    /**
+     * Discards any partial analysis buffer.
+     */
+    public void reset()
+    {
+        mPointer = 0;
+    }
+
+    /**
+     * Adds an envelope sample to the analysis buffer.  Samples are ignored once the buffer is full.
+     * @param envelope sample
+     */
+    public void receive(float envelope)
+    {
+        if(mPointer < mEnvelope.length)
+        {
+            mEnvelope[mPointer++] = envelope;
+        }
+    }
+
+    /**
+     * Analyzes the buffered samples and resets this detector.
+     * @return true if the analysis buffer is full and the samples contain voice modulation.
+     */
+    public boolean analyze()
+    {
+        boolean full = mPointer == mEnvelope.length;
+        mPointer = 0;
+
+        if(!full)
+        {
+            return false;
+        }
+
+        float mean = 0.0f;
+
+        for(float sample: mEnvelope)
+        {
+            mean += sample;
+        }
+
+        mean /= mEnvelope.length;
+
+        for(int x = 0; x < mEnvelope.length; x++)
+        {
+            mEnvelope[x] = (mEnvelope[x] - mean) * mWindow[x];
+        }
+
+        mFFT.realForward(mEnvelope);
+        double low = getBandPower(mLowStartBin, mLowStopBin);
+        double high = getBandPower(mHighStartBin, mHighStopBin);
+        return high > 0.0 && 10.0 * Math.log10(low / high) >= DETECTION_THRESHOLD_DB;
+    }
+
+    /**
+     * Calculates the mean power of the bins from the real transform output of interleaved real and imaginary values.
+     */
+    private double getBandPower(int startBin, int stopBin)
+    {
+        double power = 0.0;
+
+        for(int bin = startBin; bin < stopBin; bin++)
+        {
+            double real = mEnvelope[2 * bin];
+            double imaginary = mEnvelope[2 * bin + 1];
+            power += real * real + imaginary * imaginary;
+        }
+
+        return power / Math.max(1, stopBin - startBin);
+    }
+}

src/main/java/io/github/dsheirer/gui/SDRTrunk.java

@@ -56,7 +56,6 @@ import io.github.dsheirer.source.tuner.Tuner;
 import io.github.dsheirer.source.tuner.TunerEvent;
 import io.github.dsheirer.source.tuner.manager.DiscoveredTuner;
 import io.github.dsheirer.source.tuner.manager.TunerManager;
-import io.github.dsheirer.source.tuner.sdrplay.api.SDRPlayLibraryHelper;
 import io.github.dsheirer.source.tuner.ui.TunerSpectralDisplayManager;
 import io.github.dsheirer.spectrum.DisableSpectrumWaterfallMenuItem;
 import io.github.dsheirer.spectrum.ShowTunerMenuItem;
@@ -154,14 +153,6 @@ public class SDRTrunk implements Listener<TunerEvent>
         mApplicationLog = new ApplicationLog(mUserPreferences);
         mApplicationLog.start();
 
-        //Note: invoke this early in the application lifecycle, before the TunerManager causes the sdrplay classes
-        //to be loaded since the jextract auto-generated code attempts to load the library by name and that can fail
-        //when the library was not installed into a normal/default location, particularly on windows OS systems.
-        if(SDRPlayLibraryHelper.LOADED)
-        {
-            mLog.info("SDRPlay API native library preemptively loaded");
-        }
-
         mResourceMonitor = new ResourceMonitor(mUserPreferences);
 
         ThreadPool.logSettings();

src/main/java/io/github/dsheirer/gui/control/AccessibilityUtil.java

@@ -0,0 +1,84 @@
+/*
+ * *****************************************************************************
+ * Copyright (C) 2014-2026 Dennis Sheirer
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ * ****************************************************************************
+ */
+
+package io.github.dsheirer.gui.control;
+
+import javafx.collections.ListChangeListener;
+import javafx.scene.control.Label;
+import javafx.scene.control.ToggleButton;
+import org.controlsfx.control.SegmentedButton;
+
+/**
+ * Screen reader (accessibility) utilities for JavaFX controls.
+ */
+public final class AccessibilityUtil
+{
+    private AccessibilityUtil()
+    {
+        //Not instantiable
+    }
+
+    /**
+     * Provides an accessible name for each toggle button in a segmented button group, combining the group label with
+     * the button text (e.g. "Channel Bandwidth: 12.5 kHz").
+     *
+     * A segmented button is a container, so a label can't identify it via Label.setLabelFor() in a way that screen
+     * readers announce: each toggle button receives focus individually and would otherwise be announced by its own text
+     * only, without the context of the group.  Buttons added to the group later are also named.
+     *
+     * @param groupLabel that visually identifies the segmented button group
+     * @param segmentedButton containing the toggle buttons
+     */
+    public static void labelGroup(Label groupLabel, SegmentedButton segmentedButton)
+    {
+        String groupName = groupLabel.getText() == null ? "" : groupLabel.getText().trim();
+
+        //Remove a trailing colon so that the name doesn't announce "colon colon"
+        if(groupName.endsWith(":"))
+        {
+            groupName = groupName.substring(0, groupName.length() - 1).trim();
+        }
+
+        final String name = groupName;
+
+        for(ToggleButton button: segmentedButton.getButtons())
+        {
+            setGroupName(name, button);
+        }
+
+        segmentedButton.getButtons().addListener((ListChangeListener<ToggleButton>)change -> {
+            while(change.next())
+            {
+                for(ToggleButton added: change.getAddedSubList())
+                {
+                    setGroupName(name, added);
+                }
+            }
+        });
+    }
+
+    /**
+     * Sets the accessible text for the button as the group name and button text.
+     */
+    private static void setGroupName(String groupName, ToggleButton button)
+    {
+        String text = button.getText() == null ? "" : button.getText();
+        button.setAccessibleText(groupName.isEmpty() ? text : groupName + ": " + text);
+    }
+}

src/main/java/io/github/dsheirer/gui/control/AccessibleToggleSwitch.java

@@ -0,0 +1,80 @@
+/*
+ * *****************************************************************************
+ * Copyright (C) 2014-2026 Dennis Sheirer
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ * ****************************************************************************
+ */
+
+package io.github.dsheirer.gui.control;
+
+import javafx.scene.AccessibleAction;
+import javafx.scene.AccessibleAttribute;
+import javafx.scene.AccessibleRole;
+import org.controlsfx.control.ToggleSwitch;
+
+/**
+ * ControlsFX toggle switch that exposes its role and on/off state to screen readers.
+ *
+ * The ControlsFX toggle switch doesn't provide an accessible role or selected state, so assistive technology sees it
+ * as a generic node with no state.  This version reports itself as a toggle button, reports the selected state, and
+ * supports the accessible fire (toggle) action.  The accessible name comes from the switch text, or from a label that
+ * identifies this switch via Label.setLabelFor().
+ */
+public class AccessibleToggleSwitch extends ToggleSwitch
+{
+    /**
+     * Constructs an instance with no text.  Use Label.setLabelFor() or setAccessibleText() to provide an accessible name.
+     */
+    public AccessibleToggleSwitch()
+    {
+        this(null);
+    }
+
+    /**
+     * Constructs an instance
+     * @param text to display alongside the switch, also used as the accessible name.
+     */
+    public AccessibleToggleSwitch(String text)
+    {
+        super(text);
+        setAccessibleRole(AccessibleRole.TOGGLE_BUTTON);
+        selectedProperty().addListener((observable, oldValue, newValue) ->
+            notifyAccessibleAttributeChanged(AccessibleAttribute.SELECTED));
+    }
+
+    @Override
+    public Object queryAccessibleAttribute(AccessibleAttribute attribute, Object... parameters)
+    {
+        if(attribute == AccessibleAttribute.SELECTED)
+        {
+            return isSelected();
+        }
+
+        return super.queryAccessibleAttribute(attribute, parameters);
+    }
+
+    @Override
+    public void executeAccessibleAction(AccessibleAction action, Object... parameters)
+    {
+        if(action == AccessibleAction.FIRE)
+        {
+            fire();
+        }
+        else
+        {
+            super.executeAccessibleAction(action, parameters);
+        }
+    }
+}

src/main/java/io/github/dsheirer/gui/control/JFrequencyControl.java

@@ -45,6 +45,7 @@ import javax.swing.JLabel;
 import javax.swing.JOptionPane;
 import javax.swing.JPanel;
 import javax.swing.JTextField;
+import javax.swing.SwingUtilities;
 import javax.swing.UIManager;
 
 /**
@@ -575,7 +576,17 @@ public class JFrequencyControl extends JPanel implements ISourceEventProcessor
             @Override
             public void mouseWheelMoved(MouseWheelEvent e)
             {
-                set(mValue - e.getWheelRotation());
+                //Swing delivers mouse wheel events to disabled components, so check enabled state explicitly so that
+                //the wheel can't bypass the lock when the tuner is providing channels.
+                if(isEnabled())
+                {
+                    set(mValue - e.getWheelRotation());
+                }
+                else if(getParent() != null)
+                {
+                    //Pass the event up so that an enclosing scroll pane can still scroll while this control is locked
+                    getParent().dispatchEvent(SwingUtilities.convertMouseEvent(Digit.this, e, getParent()));
+                }
             }
         }
     }

src/main/java/io/github/dsheirer/gui/playlist/alias/AliasBulkEditor.java

@@ -21,6 +21,7 @@ package io.github.dsheirer.gui.playlist.alias;
 
 import com.google.common.collect.Ordering;
 import io.github.dsheirer.alias.Alias;
+import io.github.dsheirer.gui.control.AccessibleToggleSwitch;
 import io.github.dsheirer.gui.playlist.Editor;
 import io.github.dsheirer.icon.Icon;
 import io.github.dsheirer.playlist.PlaylistManager;
@@ -100,6 +101,7 @@ public class AliasBulkEditor extends Editor<List<Alias>>
         gridPane.getChildren().add(separator);
 
         Label colorLabel = new Label("Color");
+        colorLabel.setLabelFor(getColorPicker());
         GridPane.setHalignment(colorLabel, HPos.RIGHT);
         GridPane.setConstraints(colorLabel, 0, ++row);
         gridPane.getChildren().add(colorLabel);
@@ -114,6 +116,7 @@ public class AliasBulkEditor extends Editor<List<Alias>>
         gridPane.getChildren().add(getResetColorButton());
 
         Label iconLabel = new Label("Icon");
+        iconLabel.setLabelFor(getIconNodeComboBox());
         GridPane.setHalignment(iconLabel, HPos.RIGHT);
         GridPane.setConstraints(iconLabel, 0, ++row);
         gridPane.getChildren().add(iconLabel);
@@ -125,6 +128,7 @@ public class AliasBulkEditor extends Editor<List<Alias>>
         gridPane.getChildren().add(getApplyIconButton());
 
         Label listenLabel = new Label("Listen");
+        listenLabel.setLabelFor(getMonitorAudioToggleSwitch());
         GridPane.setHalignment(listenLabel, HPos.RIGHT);
         GridPane.setConstraints(listenLabel, 0, ++row);
         gridPane.getChildren().add(listenLabel);
@@ -133,6 +137,7 @@ public class AliasBulkEditor extends Editor<List<Alias>>
         gridPane.getChildren().add(getMonitorAudioToggleSwitch());
 
         Label priorityLabel = new Label("Priority");
+        priorityLabel.setLabelFor(getMonitorPriorityComboBox());
         GridPane.setHalignment(priorityLabel, HPos.RIGHT);
         GridPane.setConstraints(priorityLabel, 2, row);
         gridPane.getChildren().add(priorityLabel);
@@ -144,6 +149,7 @@ public class AliasBulkEditor extends Editor<List<Alias>>
         gridPane.getChildren().add(getApplyMonitorButton());
 
         Label recordLabel = new Label("Record");
+        recordLabel.setLabelFor(getRecordToggleSwitch());
         GridPane.setHalignment(recordLabel, HPos.RIGHT);
         GridPane.setConstraints(recordLabel, 0, ++row);
         gridPane.getChildren().add(recordLabel);
@@ -235,6 +241,7 @@ public class AliasBulkEditor extends Editor<List<Alias>>
         if(mApplyColorButton == null)
         {
             mApplyColorButton = new Button("Apply");
+            mApplyColorButton.setAccessibleText("Apply color to selected aliases");
             mApplyColorButton.setOnAction(event ->
             {
                 startChange();
@@ -258,6 +265,7 @@ public class AliasBulkEditor extends Editor<List<Alias>>
         if(mResetColorButton == null)
         {
             mResetColorButton = new Button("Reset Color");
+            mResetColorButton.setAccessibleText("Reset color for selected aliases");
             mResetColorButton.setOnAction(event ->
             {
                 startChange();
@@ -297,6 +305,7 @@ public class AliasBulkEditor extends Editor<List<Alias>>
         if(mApplyIconButton == null)
         {
             mApplyIconButton = new Button("Apply");
+            mApplyIconButton.setAccessibleText("Apply icon to selected aliases");
             mApplyIconButton.setDisable(true);
             mApplyIconButton.setOnAction(new EventHandler<ActionEvent>()
             {
@@ -327,7 +336,7 @@ public class AliasBulkEditor extends Editor<List<Alias>>
     {
         if(mMonitorAudioToggleSwitch == null)
         {
-            mMonitorAudioToggleSwitch = new ToggleSwitch();
+            mMonitorAudioToggleSwitch = new AccessibleToggleSwitch();
             mMonitorAudioToggleSwitch.setSelected(true);
             mMonitorAudioToggleSwitch.selectedProperty()
                     .addListener((observable, oldValue, newValue) -> modifiedProperty().set(true));
@@ -340,7 +349,7 @@ public class AliasBulkEditor extends Editor<List<Alias>>
     {
         if(mRecordToggleSwitch == null)
         {
-            mRecordToggleSwitch = new ToggleSwitch();
+            mRecordToggleSwitch = new AccessibleToggleSwitch();
             mRecordToggleSwitch.setSelected(false);
             mRecordToggleSwitch.selectedProperty()
                     .addListener((observable, oldValue, newValue) -> modifiedProperty().set(true));
@@ -374,6 +383,7 @@ public class AliasBulkEditor extends Editor<List<Alias>>
         if(mApplyMonitorButton == null)
         {
             mApplyMonitorButton = new Button("Apply");
+            mApplyMonitorButton.setAccessibleText("Apply listen and priority to selected aliases");
             mApplyMonitorButton.setOnAction(new EventHandler<ActionEvent>()
             {
                 @Override
@@ -414,6 +424,7 @@ public class AliasBulkEditor extends Editor<List<Alias>>
         if(mApplyRecordButton == null)
         {
             mApplyRecordButton = new Button("Apply");
+            mApplyRecordButton.setAccessibleText("Apply record to selected aliases");
             mApplyRecordButton.setOnAction(event -> {
                 startChange();
                 boolean record = getRecordToggleSwitch().isSelected();
@@ -456,12 +467,15 @@ public class AliasBulkEditor extends Editor<List<Alias>>
                     {
                         setText(null);
                         setGraphic(null);
+                        setAccessibleText(null);
                     }
                     else
                     {
                         textLabel.setText(item.getName());
                         iconLabel.setGraphic(new ImageView(item.getFxImage()));
                         setGraphic(gridPane);
+                        //The name is shown in a nested label, so expose it as the cell's accessible text
+                        setAccessibleText(item.getName());
                     }
                 }
             };

src/main/java/io/github/dsheirer/gui/playlist/alias/AliasConfigurationEditor.java

@@ -273,7 +273,9 @@ public class AliasConfigurationEditor extends SplitPane implements IAliasListRef
 
 
             Label listLabel = new Label("Alias List");
+            listLabel.setLabelFor(getAliasListNameComboBox());
             Label searchLabel = new Label("Search");
+            searchLabel.setLabelFor(getSearchField());
             searchLabel.setAlignment(Pos.CENTER_RIGHT);
 
             HBox searchBox = new HBox();
@@ -451,6 +453,7 @@ public class AliasConfigurationEditor extends SplitPane implements IAliasListRef
         if(mAliasTableView == null)
         {
             mAliasTableView = new TableView<>();
+            mAliasTableView.setAccessibleText("Aliases");
 
             TableColumn nameColumn = new TableColumn();
             nameColumn.setText("Alias");
@@ -751,15 +754,18 @@ public class AliasConfigurationEditor extends SplitPane implements IAliasListRef
                                 UIManager.getColor("TextField.background"));
                             rectangle.setFill(ColorUtil.fromInteger(readable.equals(color) ? alias.getColor() :
                                 readable.getRGB()));
+                            setAccessibleText(String.format("#%06X", alias.getColor() & 0xFFFFFF));
                         }
                         else
                         {
                             rectangle.setVisible(false);
+                            setAccessibleText(null);
                         }
                     }
                     else
                     {
                         rectangle.setVisible(false);
+                        setAccessibleText(null);
                     }
                 }
             };
@@ -798,13 +804,15 @@ public class AliasConfigurationEditor extends SplitPane implements IAliasListRef
                 {
                     super.updateItem(item, empty);
 
-                    if(!empty && getTableRow() != null)
+                    if(!empty && getTableRow() != null && item != null)
                     {
                         iconNode.setVisible(item);
+                        setAccessibleText(item ? "Yes" : "No");
                     }
                     else
                     {
                         iconNode.setVisible(false);
+                        setAccessibleText(null);
                     }
                 }
             };
@@ -919,6 +927,7 @@ public class AliasConfigurationEditor extends SplitPane implements IAliasListRef
                 {
                     super.updateItem(item, empty);
                     setAlignment(Pos.CENTER);
+                    setAccessibleText(null);
 
                     if(empty)
                     {
@@ -937,6 +946,7 @@ public class AliasConfigurationEditor extends SplitPane implements IAliasListRef
                                 if(icon != null && icon.getFxImage() != null)
                                 {
                                     setGraphic(new ImageView(icon.getFxImage()));
+                                    setAccessibleText(icon.getName());
                                 }
                                 else
                                 {

src/main/java/io/github/dsheirer/gui/playlist/alias/AliasItemEditor.java

@@ -57,6 +57,7 @@ import io.github.dsheirer.alias.id.talkgroup.TalkgroupRange;
 import io.github.dsheirer.alias.id.tone.TonesID;
 import io.github.dsheirer.audio.broadcast.ConfiguredBroadcast;
 import io.github.dsheirer.eventbus.MyEventBus;
+import io.github.dsheirer.gui.control.AccessibleToggleSwitch;
 import io.github.dsheirer.gui.control.IntegerFormatter;
 import io.github.dsheirer.gui.playlist.Editor;
 import io.github.dsheirer.gui.playlist.alias.action.ActionEditor;
@@ -574,6 +575,7 @@ public class AliasItemEditor extends Editor<Alias>
         {
             mActionsList = new ListView<>(FXCollections.observableArrayList(AliasAction.extractor()));
             mActionsList.setPrefHeight(75);
+            mActionsList.setAccessibleText("Alias actions");
             mActionsList.setDisable(true);
             mActionsList.getSelectionModel().selectedItemProperty()
                 .addListener((observable, oldValue, newValue) -> setAction(newValue));
@@ -686,6 +688,7 @@ public class AliasItemEditor extends Editor<Alias>
             mIdentifiersList = new ListView<>(FXCollections.observableArrayList(AliasID.extractor()));
             mIdentifiersList.setDisable(true);
             mIdentifiersList.setPrefHeight(75);
+            mIdentifiersList.setAccessibleText("Alias identifiers");
             mIdentifiersList.getSelectionModel().selectedItemProperty()
                 .addListener((observable, oldValue, newValue) -> setIdentifier(newValue));
             mIdentifiersList.setCellFactory(param -> new AliasIdentifierCell());
@@ -846,13 +849,17 @@ public class AliasItemEditor extends Editor<Alias>
             buttonBox.setSpacing(5);
             buttonBox.getChildren().addAll(new Label(" "), getAddStreamButton(), getRemoveStreamButton());
 
+            Label availableLabel = new Label("Available");
+            getAvailableStreamsView().setAccessibleText("Available streams");
             VBox availableBox = new VBox();
             VBox.setVgrow(getAvailableStreamsView(), Priority.ALWAYS);
-            availableBox.getChildren().addAll(new Label("Available"), getAvailableStreamsView());
+            availableBox.getChildren().addAll(availableLabel, getAvailableStreamsView());
 
+            Label selectedLabel = new Label("Selected");
+            getSelectedStreamsView().setAccessibleText("Selected streams");
             VBox selectedBox = new VBox();
             VBox.setVgrow(getSelectedStreamsView(), Priority.ALWAYS);
-            selectedBox.getChildren().addAll(new Label("Selected"), getSelectedStreamsView());
+            selectedBox.getChildren().addAll(selectedLabel, getSelectedStreamsView());
 
             HBox hbox = new HBox();
             hbox.setSpacing(10);
@@ -864,6 +871,7 @@ public class AliasItemEditor extends Editor<Alias>
             vbox.setSpacing(10);
             VBox.setVgrow(hbox, Priority.ALWAYS);
             Label label = new Label("Stream this Alias as Talkgroup:");
+            label.setLabelFor(getStreamAsTalkgroupField());
             HBox streamAsHBox = new HBox();
             streamAsHBox.setAlignment(Pos.CENTER_LEFT);
             streamAsHBox.setSpacing(10);
@@ -964,6 +972,8 @@ public class AliasItemEditor extends Editor<Alias>
                     .or(Bindings.isNull(getAvailableStreamsView().getSelectionModel().selectedItemProperty())));
             mAddStreamButton.setMaxWidth(Double.MAX_VALUE);
             mAddStreamButton.setGraphic(new IconNode(FontAwesome.ANGLE_RIGHT));
+            mAddStreamButton.setAccessibleText("Add selected stream");
+            mAddStreamButton.setTooltip(new Tooltip("Add selected stream"));
             mAddStreamButton.setAlignment(Pos.CENTER);
             mAddStreamButton.setOnAction(event -> {
                 String stream = getAvailableStreamsView().getSelectionModel().getSelectedItem();
@@ -990,6 +1000,8 @@ public class AliasItemEditor extends Editor<Alias>
                     .or(Bindings.isNull(getSelectedStreamsView().getSelectionModel().selectedItemProperty())));
             mRemoveStreamButton.setMaxWidth(Double.MAX_VALUE);
             mRemoveStreamButton.setGraphic(new IconNode(FontAwesome.ANGLE_LEFT));
+            mRemoveStreamButton.setAccessibleText("Remove selected stream");
+            mRemoveStreamButton.setTooltip(new Tooltip("Remove selected stream"));
             mRemoveStreamButton.setAlignment(Pos.CENTER);
             mRemoveStreamButton.setOnAction(event -> {
                 BroadcastChannel broadcastChannel = getSelectedStreamsView().getSelectionModel().getSelectedItem();
@@ -1050,6 +1062,7 @@ public class AliasItemEditor extends Editor<Alias>
             int row = 0;
 
             Label nameLabel = new Label("Alias");
+            nameLabel.setLabelFor(getNameField());
             GridPane.setHalignment(nameLabel, HPos.RIGHT);
             GridPane.setConstraints(nameLabel, 0, row);
             mTextFieldPane.getChildren().add(nameLabel);
@@ -1058,6 +1071,7 @@ public class AliasItemEditor extends Editor<Alias>
             mTextFieldPane.getChildren().add(getNameField());
 
             Label monitorAudioLabel = new Label("Listen");
+            monitorAudioLabel.setLabelFor(getMonitorAudioToggleSwitch());
             GridPane.setHalignment(monitorAudioLabel, HPos.RIGHT);
             GridPane.setConstraints(monitorAudioLabel, 2, row);
             mTextFieldPane.getChildren().add(monitorAudioLabel);
@@ -1065,6 +1079,7 @@ public class AliasItemEditor extends Editor<Alias>
             mTextFieldPane.getChildren().add(getMonitorAudioToggleSwitch());
 
             Label monitorPriorityLabel = new Label("Priority");
+            monitorPriorityLabel.setLabelFor(getMonitorPriorityComboBox());
             GridPane.setHalignment(monitorPriorityLabel, HPos.RIGHT);
             GridPane.setConstraints(monitorPriorityLabel, 4, row);
             mTextFieldPane.getChildren().add(monitorPriorityLabel);
@@ -1072,6 +1087,7 @@ public class AliasItemEditor extends Editor<Alias>
             mTextFieldPane.getChildren().add(getMonitorPriorityComboBox());
 
             Label colorLabel = new Label("Color");
+            colorLabel.setLabelFor(getColorPicker());
             GridPane.setHalignment(colorLabel, HPos.RIGHT);
             GridPane.setConstraints(colorLabel, 6, row);
             mTextFieldPane.getChildren().add(colorLabel);
@@ -1079,6 +1095,7 @@ public class AliasItemEditor extends Editor<Alias>
             mTextFieldPane.getChildren().add(getColorPicker());
 
             Label groupLabel = new Label("Group");
+            groupLabel.setLabelFor(getGroupField());
             GridPane.setHalignment(groupLabel, HPos.RIGHT);
             GridPane.setConstraints(groupLabel, 0, ++row);
             mTextFieldPane.getChildren().add(groupLabel);
@@ -1087,6 +1104,7 @@ public class AliasItemEditor extends Editor<Alias>
             mTextFieldPane.getChildren().add(getGroupField());
 
             Label recordAudioLabel = new Label("Record");
+            recordAudioLabel.setLabelFor(getRecordAudioToggleSwitch());
             GridPane.setHalignment(recordAudioLabel, HPos.RIGHT);
             GridPane.setConstraints(recordAudioLabel, 2, row);
             mTextFieldPane.getChildren().add(recordAudioLabel);
@@ -1094,6 +1112,7 @@ public class AliasItemEditor extends Editor<Alias>
             mTextFieldPane.getChildren().add(getRecordAudioToggleSwitch());
 
             Label iconLabel = new Label("Icon");
+            iconLabel.setLabelFor(getIconNodeComboBox());
             GridPane.setHalignment(iconLabel, HPos.RIGHT);
             GridPane.setConstraints(iconLabel, 4, row);
             mTextFieldPane.getChildren().add(iconLabel);
@@ -1108,7 +1127,7 @@ public class AliasItemEditor extends Editor<Alias>
     {
         if(mMonitorAudioToggleSwitch == null)
         {
-            mMonitorAudioToggleSwitch = new ToggleSwitch();
+            mMonitorAudioToggleSwitch = new AccessibleToggleSwitch();
             mMonitorAudioToggleSwitch.setDisable(true);
             mMonitorAudioToggleSwitch.selectedProperty()
                 .addListener((observable, oldValue, newValue) -> modifiedProperty().set(true));
@@ -1141,7 +1160,7 @@ public class AliasItemEditor extends Editor<Alias>
     {
         if(mRecordAudioToggleSwitch == null)
         {
-            mRecordAudioToggleSwitch = new ToggleSwitch();
+            mRecordAudioToggleSwitch = new AccessibleToggleSwitch();
             mRecordAudioToggleSwitch.setDisable(true);
             mRecordAudioToggleSwitch.selectedProperty()
                 .addListener((observable, oldValue, newValue) -> modifiedProperty().set(true));
@@ -1820,12 +1839,15 @@ public class AliasItemEditor extends Editor<Alias>
                     {
                         setText(null);
                         setGraphic(null);
+                        setAccessibleText(null);
                     }
                     else
                     {
                         textLabel.setText(item.getName());
                         iconLabel.setGraphic(new ImageView(item.getFxImage()));
                         setGraphic(gridPane);
+                        //The name is shown in a nested label, so expose it as the cell's accessible text
+                        setAccessibleText(item.getName());
                     }
                 }
             };

src/main/java/io/github/dsheirer/gui/playlist/alias/AliasViewByIdentifierEditor.java

@@ -23,11 +23,21 @@ import io.github.dsheirer.alias.Alias;
 import io.github.dsheirer.alias.AliasModel;
 import io.github.dsheirer.alias.id.AliasID;
 import io.github.dsheirer.alias.id.AliasIDType;
+import io.github.dsheirer.alias.id.radio.P25FullyQualifiedRadio;
+import io.github.dsheirer.alias.id.radio.Radio;
+import io.github.dsheirer.alias.id.radio.RadioRange;
+import io.github.dsheirer.alias.id.status.UnitStatusID;
+import io.github.dsheirer.alias.id.status.UserStatusID;
+import io.github.dsheirer.alias.id.talkgroup.P25FullyQualifiedTalkgroup;
+import io.github.dsheirer.alias.id.talkgroup.Talkgroup;
+import io.github.dsheirer.alias.id.talkgroup.TalkgroupRange;
 import io.github.dsheirer.eventbus.MyEventBus;
 import io.github.dsheirer.playlist.PlaylistManager;
+import io.github.dsheirer.protocol.Protocol;
 import javafx.beans.InvalidationListener;
 import javafx.beans.Observable;
 import javafx.beans.property.ReadOnlyBooleanProperty;
+import javafx.beans.property.ReadOnlyObjectWrapper;
 import javafx.beans.property.SimpleStringProperty;
 import javafx.beans.property.StringProperty;
 import javafx.collections.FXCollections;
@@ -39,6 +49,7 @@ import javafx.scene.control.Button;
 import javafx.scene.control.ButtonType;
 import javafx.scene.control.ComboBox;
 import javafx.scene.control.Label;
+import javafx.scene.control.TableCell;
 import javafx.scene.control.TableColumn;
 import javafx.scene.control.TableView;
 import javafx.scene.control.cell.PropertyValueFactory;
@@ -52,6 +63,7 @@ import org.slf4j.LoggerFactory;
 
 import java.util.ArrayList;
 import java.util.Collections;
+import java.util.Comparator;
 import java.util.List;
 import java.util.function.Predicate;
 
@@ -62,7 +74,7 @@ public class AliasViewByIdentifierEditor extends VBox
     private ComboBox<String> mAliasListNameComboBox;
     private ComboBox<AliasIDType> mAliasIDTypeComboBox;
     private TableView<AliasAndIdentifier> mAliasAndIdentifierTableView;
-    private TableColumn<AliasAndIdentifier,String> mIdentifierColumn;
+    private TableColumn<AliasAndIdentifier,AliasID> mIdentifierColumn;
     private Button mViewAliasButton;
     private boolean aliasListInvalidated;
 
@@ -85,6 +97,7 @@ public class AliasViewByIdentifierEditor extends VBox
         gridPane.setHgap(10);
 
         Label aliasListLabel = new Label("Alias List");
+        aliasListLabel.setLabelFor(getAliasListNameComboBox());
         GridPane.setHalignment(aliasListLabel, HPos.RIGHT);
         GridPane.setConstraints(aliasListLabel, 0, 0);
         gridPane.getChildren().add(aliasListLabel);
@@ -94,6 +107,7 @@ public class AliasViewByIdentifierEditor extends VBox
         gridPane.getChildren().add(getAliasListNameComboBox());
 
         Label identifierLabel = new Label("Identifier Type");
+        identifierLabel.setLabelFor(getAliasIDTypeComboBox());
         GridPane.setHalignment(identifierLabel, HPos.RIGHT);
         GridPane.setConstraints(identifierLabel, 0, 1);
         gridPane.getChildren().add(identifierLabel);
@@ -198,9 +212,29 @@ public class AliasViewByIdentifierEditor extends VBox
         if(mAliasAndIdentifierTableView == null)
         {
             mAliasAndIdentifierTableView = new TableView<>(FXCollections.observableArrayList(AliasAndIdentifier.extractor()));
+            mAliasAndIdentifierTableView.setAccessibleText("Aliases by identifier");
             mAliasAndIdentifierTableView.setPlaceholder(new Label("No aliases or identifiers available"));
             mIdentifierColumn = new TableColumn<>("Identifier");
-            mIdentifierColumn.setCellValueFactory(new PropertyValueFactory<>("identifier"));
+            mIdentifierColumn.setCellValueFactory(param -> new ReadOnlyObjectWrapper<>(param.getValue().getAliasIdentifier()));
+            mIdentifierColumn.setCellFactory(column -> new TableCell<>()
+            {
+                @Override
+                protected void updateItem(AliasID item, boolean empty)
+                {
+                    super.updateItem(item, empty);
+                    textProperty().unbind();
+
+                    if(empty || item == null)
+                    {
+                        setText(null);
+                    }
+                    else
+                    {
+                        textProperty().bind(item.valueProperty());
+                    }
+                }
+            });
+            mIdentifierColumn.setComparator(new AliasIdentifierComparator());
             mIdentifierColumn.setPrefWidth(350);
 
             TableColumn<AliasAndIdentifier, String> aliasColumn = new TableColumn<>();
@@ -268,6 +302,103 @@ public class AliasViewByIdentifierEditor extends VBox
         return mAliasIDTypeComboBox;
     }
 
+    /**
+     * Compares alias identifiers by protocol and then by numeric identifier value(s) so that the identifier column
+     * sorts numerically rather than alphabetically by the formatted display text.  Identifiers that don't have a
+     * numeric value fall back to comparing the display text.
+     */
+    public static class AliasIdentifierComparator implements Comparator<AliasID>
+    {
+        private static final Comparator<Protocol> PROTOCOL_COMPARATOR = Comparator.nullsLast(Comparator.naturalOrder());
+
+        @Override
+        public int compare(AliasID a, AliasID b)
+        {
+            if(a == b)
+            {
+                return 0;
+            }
+            if(a == null)
+            {
+                return 1;
+            }
+            if(b == null)
+            {
+                return -1;
+            }
+
+            int comparison = PROTOCOL_COMPARATOR.compare(getProtocol(a), getProtocol(b));
+
+            if(comparison == 0)
+            {
+                long[] aValues = getValues(a);
+                long[] bValues = getValues(b);
+
+                if(aValues != null && bValues != null)
+                {
+                    for(int x = 0; x < Math.min(aValues.length, bValues.length) && comparison == 0; x++)
+                    {
+                        comparison = Long.compare(aValues[x], bValues[x]);
+                    }
+
+                    if(comparison == 0)
+                    {
+                        comparison = Integer.compare(aValues.length, bValues.length);
+                    }
+                }
+                else if(aValues != null)
+                {
+                    comparison = -1;
+                }
+                else if(bValues != null)
+                {
+                    comparison = 1;
+                }
+            }
+
+            if(comparison == 0)
+            {
+                comparison = String.valueOf(a).compareTo(String.valueOf(b));
+            }
+
+            return comparison;
+        }
+
+        /**
+         * Protocol for the identifier, or null if the identifier doesn't have a protocol.
+         */
+        private static Protocol getProtocol(AliasID id)
+        {
+            return switch(id)
+            {
+                case Talkgroup talkgroup -> talkgroup.getProtocol();
+                case TalkgroupRange talkgroupRange -> talkgroupRange.getProtocol();
+                case Radio radio -> radio.getProtocol();
+                case RadioRange radioRange -> radioRange.getProtocol();
+                default -> null;
+            };
+        }
+
+        /**
+         * Numeric values for the identifier, in order of sort significance, or null if the identifier is not numeric.
+         */
+        private static long[] getValues(AliasID id)
+        {
+            return switch(id)
+            {
+                case P25FullyQualifiedTalkgroup fqt -> new long[]{fqt.getWacn(), fqt.getSystem(), fqt.getValue()};
+                case P25FullyQualifiedRadio fqr -> new long[]{fqr.getWacn(), fqr.getSystem(), fqr.getValue()};
+                case Talkgroup talkgroup -> new long[]{talkgroup.getValue()};
+                case TalkgroupRange range -> new long[]{range.getMinTalkgroup(), range.getMaxTalkgroup()};
+                case Radio radio -> new long[]{radio.getValue()};
+                case RadioRange range -> new long[]{range.getMinRadio(), range.getMaxRadio()};
+                case UnitStatusID status -> new long[]{status.getStatus()};
+                case UserStatusID status -> new long[]{status.getStatus()};
+                default -> null;
+            };
+        }
+    }
+
     public static class AliasAndIdentifier
     {
         private Alias mAlias;

src/main/java/io/github/dsheirer/gui/playlist/alias/AliasViewByRecordingEditor.java

@@ -34,6 +34,7 @@ import javafx.scene.control.SelectionMode;
 import javafx.scene.control.TableColumn;
 import javafx.scene.control.TableView;
 import javafx.scene.control.TextField;
+import javafx.scene.control.Tooltip;
 import javafx.scene.control.cell.PropertyValueFactory;
 import javafx.scene.layout.HBox;
 import javafx.scene.layout.Priority;
@@ -157,12 +158,14 @@ public class AliasViewByRecordingEditor extends VBox
             aliasListBox.setAlignment(Pos.CENTER);
             aliasListBox.setSpacing(5);
             Label aliasListLabel = new Label("Alias List");
+            aliasListLabel.setLabelFor(getAliasListNameComboBox());
             aliasListBox.getChildren().addAll(aliasListLabel, getAliasListNameComboBox());
 
             HBox searchBox = new HBox();
             searchBox.setAlignment(Pos.CENTER);
             searchBox.setSpacing(5);
             Label searchLabel = new Label("Search");
+            searchLabel.setLabelFor(getSearchField());
             searchBox.getChildren().addAll(searchLabel, getSearchField());
 
             mTopBox.getChildren().addAll(aliasListBox, searchBox);
@@ -228,6 +231,7 @@ public class AliasViewByRecordingEditor extends VBox
         if(mNoRecordAliasTableView == null)
         {
             mNoRecordAliasTableView = new TableView<>();
+            mNoRecordAliasTableView.setAccessibleText("Don't record audio aliases");
             mNoRecordAliasTableView.setMaxHeight(Double.MAX_VALUE);
             mNoRecordAliasTableView.getSelectionModel().setSelectionMode(SelectionMode.MULTIPLE);
 
@@ -266,6 +270,7 @@ public class AliasViewByRecordingEditor extends VBox
         if(mRecordAliasTableView == null)
         {
             mRecordAliasTableView = new TableView<>();
+            mRecordAliasTableView.setAccessibleText("Record audio aliases");
             mRecordAliasTableView.setMaxHeight(Double.MAX_VALUE);
             mRecordAliasTableView.getSelectionModel().setSelectionMode(SelectionMode.MULTIPLE);
 
@@ -307,6 +312,8 @@ public class AliasViewByRecordingEditor extends VBox
             mAddButton.setDisable(true);
             mAddButton.setMaxWidth(Double.MAX_VALUE);
             mAddButton.setGraphic(new IconNode(FontAwesome.ANGLE_RIGHT));
+            mAddButton.setAccessibleText("Record audio for selected alias");
+            mAddButton.setTooltip(new Tooltip("Record audio for selected alias"));
             mAddButton.setAlignment(Pos.CENTER);
             mAddButton.setOnAction(event -> {
                 Alias selectedAlias = getNoRecordAliasTableView().getSelectionModel().getSelectedItem();
@@ -330,6 +337,8 @@ public class AliasViewByRecordingEditor extends VBox
             mAddAllButton.setDisable(true);
             mAddAllButton.setMaxWidth(Double.MAX_VALUE);
             mAddAllButton.setGraphic(new IconNode(FontAwesome.ANGLE_DOUBLE_RIGHT));
+            mAddAllButton.setAccessibleText("Record audio for all selected aliases");
+            mAddAllButton.setTooltip(new Tooltip("Record audio for all selected aliases"));
             mAddAllButton.setAlignment(Pos.CENTER);
             mAddAllButton.setOnAction(event -> {
                 List<Alias> selectedAliases =
@@ -358,6 +367,8 @@ public class AliasViewByRecordingEditor extends VBox
             mRemoveButton.setDisable(true);
             mRemoveButton.setMaxWidth(Double.MAX_VALUE);
             mRemoveButton.setGraphic(new IconNode(FontAwesome.ANGLE_LEFT));
+            mRemoveButton.setAccessibleText("Don't record audio for selected alias");
+            mRemoveButton.setTooltip(new Tooltip("Don't record audio for selected alias"));
             mRemoveButton.setAlignment(Pos.CENTER);
             mRemoveButton.setOnAction(event -> {
                 Alias selectedAlias = getRecordAliasTableView().getSelectionModel().getSelectedItem();
@@ -381,6 +392,8 @@ public class AliasViewByRecordingEditor extends VBox
             mRemoveAllButton.setDisable(true);
             mRemoveAllButton.setMaxWidth(Double.MAX_VALUE);
             mRemoveAllButton.setGraphic(new IconNode(FontAwesome.ANGLE_DOUBLE_LEFT));
+            mRemoveAllButton.setAccessibleText("Don't record audio for all selected aliases");
+            mRemoveAllButton.setTooltip(new Tooltip("Don't record audio for all selected aliases"));
             mRemoveAllButton.setAlignment(Pos.CENTER);
             mRemoveAllButton.setOnAction(event -> {
                 List<Alias> selectedAliases =

src/main/java/io/github/dsheirer/gui/playlist/alias/action/BeepEditor.java

@@ -66,6 +66,7 @@ public class BeepEditor extends ActionEditor<BeepAction>
         int row = 0;
 
         Label intervalLabel = new Label(("Beep"));
+        intervalLabel.setLabelFor(getIntervalComboBox());
         GridPane.setHalignment(intervalLabel, HPos.RIGHT);
         GridPane.setConstraints(intervalLabel, 0, row);
         gridPane.getChildren().add(intervalLabel);
@@ -80,6 +81,7 @@ public class BeepEditor extends ActionEditor<BeepAction>
         GridPane.setConstraints(getSecondsLabel(), 3, row);
         GridPane.setHgrow(getSecondsLabel(), Priority.ALWAYS);
         gridPane.getChildren().add(getSecondsLabel());
+        getSecondsLabel().setLabelFor(getPeriodTextField());
 
         GridPane.setConstraints(getTestButton(), 4, row);
         gridPane.getChildren().add(getTestButton());
@@ -155,6 +157,7 @@ public class BeepEditor extends ActionEditor<BeepAction>
         if(mTestButton == null)
         {
             mTestButton = new Button("Test");
+            mTestButton.setAccessibleText("Test beep");
             mTestButton.setMaxWidth(Double.MAX_VALUE);
             mTestButton.setOnAction(event -> test());
         }

src/main/java/io/github/dsheirer/gui/playlist/alias/action/ClipEditor.java

@@ -71,6 +71,7 @@ public class ClipEditor extends ActionEditor<ClipAction>
         int row = 0;
 
         Label fileLabel = new Label("Audio File");
+        fileLabel.setLabelFor(getFilePath());
         GridPane.setHalignment(fileLabel, HPos.RIGHT);
         GridPane.setConstraints(fileLabel, 0, row);
         gridPane.getChildren().add(fileLabel);
@@ -83,6 +84,7 @@ public class ClipEditor extends ActionEditor<ClipAction>
         gridPane.getChildren().add(getFileChooser());
 
         Label intervalLabel = new Label(("Play Audio Clip"));
+        intervalLabel.setLabelFor(getIntervalComboBox());
         GridPane.setHalignment(intervalLabel, HPos.RIGHT);
         GridPane.setConstraints(intervalLabel, 0, ++row);
         gridPane.getChildren().add(intervalLabel);
@@ -97,6 +99,7 @@ public class ClipEditor extends ActionEditor<ClipAction>
         GridPane.setConstraints(getSecondsLabel(), 3, row);
         GridPane.setHgrow(getSecondsLabel(), Priority.ALWAYS);
         gridPane.getChildren().add(getSecondsLabel());
+        getSecondsLabel().setLabelFor(getPeriodTextField());
 
         GridPane.setConstraints(getTestButton(), 4, row);
         gridPane.getChildren().add(getTestButton());
@@ -223,6 +226,7 @@ public class ClipEditor extends ActionEditor<ClipAction>
         if(mTestButton == null)
         {
             mTestButton = new Button("Test");
+            mTestButton.setAccessibleText("Test audio clip");
             mTestButton.setMaxWidth(Double.MAX_VALUE);
             mTestButton.setDisable(true);
             mTestButton.setOnAction(event -> test());
@@ -236,6 +240,7 @@ public class ClipEditor extends ActionEditor<ClipAction>
         if(mFileChooser == null)
         {
             mFileChooser = new Button(("Select ..."));
+            mFileChooser.setAccessibleText("Select audio file");
             mFileChooser.setMaxWidth(Double.MAX_VALUE);
             mFileChooser.setDisable(true);
             mFileChooser.setOnAction(event -> {
@@ -278,7 +283,8 @@ public class ClipEditor extends ActionEditor<ClipAction>
         if(mFilePath == null)
         {
             mFilePath = new TextField(PLEASE_SELECT_A_FILE);
-            mFilePath.setDisable(true);
+            //Read-only rather than disabled so that the selected file remains focusable for screen readers
+            mFilePath.setEditable(false);
             mFilePath.setMaxWidth(Double.MAX_VALUE);
             mFilePath.textProperty().addListener((observable, oldValue, newValue) -> {
                 if(newValue != null && !newValue.isEmpty() && !newValue.contentEquals(PLEASE_SELECT_A_FILE))

src/main/java/io/github/dsheirer/gui/playlist/alias/action/ScriptEditor.java

@@ -71,6 +71,7 @@ public class ScriptEditor extends ActionEditor<ScriptAction>
         int row = 0;
 
         Label fileLabel = new Label("Script File");
+        fileLabel.setLabelFor(getFilePath());
         GridPane.setHalignment(fileLabel, HPos.RIGHT);
         GridPane.setConstraints(fileLabel, 0, row);
         gridPane.getChildren().add(fileLabel);
@@ -83,6 +84,7 @@ public class ScriptEditor extends ActionEditor<ScriptAction>
         gridPane.getChildren().add(getFileChooser());
 
         Label intervalLabel = new Label(("Run Script"));
+        intervalLabel.setLabelFor(getIntervalComboBox());
         GridPane.setHalignment(intervalLabel, HPos.RIGHT);
         GridPane.setConstraints(intervalLabel, 0, ++row);
         gridPane.getChildren().add(intervalLabel);
@@ -97,6 +99,7 @@ public class ScriptEditor extends ActionEditor<ScriptAction>
         GridPane.setConstraints(getSecondsLabel(), 3, row);
         GridPane.setHgrow(getSecondsLabel(), Priority.ALWAYS);
         gridPane.getChildren().add(getSecondsLabel());
+        getSecondsLabel().setLabelFor(getPeriodTextField());
 
         GridPane.setConstraints(getTestButton(), 4, row);
         gridPane.getChildren().add(getTestButton());
@@ -223,6 +226,7 @@ public class ScriptEditor extends ActionEditor<ScriptAction>
         if(mTestButton == null)
         {
             mTestButton = new Button("Test");
+            mTestButton.setAccessibleText("Test script");
             mTestButton.setMaxWidth(Double.MAX_VALUE);
             mTestButton.setDisable(true);
             mTestButton.setOnAction(event -> test());
@@ -236,6 +240,7 @@ public class ScriptEditor extends ActionEditor<ScriptAction>
         if(mFileChooser == null)
         {
             mFileChooser = new Button(("Select ..."));
+            mFileChooser.setAccessibleText("Select script file");
             mFileChooser.setMaxWidth(Double.MAX_VALUE);
             mFileChooser.setDisable(true);
             mFileChooser.setOnAction(event -> {
@@ -278,7 +283,8 @@ public class ScriptEditor extends ActionEditor<ScriptAction>
         if(mFilePath == null)
         {
             mFilePath = new TextField(PLEASE_SELECT_A_FILE);
-            mFilePath.setDisable(true);
+            //Read-only rather than disabled so that the selected file remains focusable for screen readers
+            mFilePath.setEditable(false);
             mFilePath.setMaxWidth(Double.MAX_VALUE);
             mFilePath.textProperty().addListener((observable, oldValue, newValue) -> {
                 if(newValue != null && !newValue.isEmpty() && !newValue.contentEquals(PLEASE_SELECT_A_FILE))

src/main/java/io/github/dsheirer/gui/playlist/alias/identifier/DcsEditor.java

@@ -44,6 +44,7 @@ public class DcsEditor extends IdentifierEditor<Dcs>
         gridPane.setHgap(5);
 
         Label typeLabel = new Label("DCS Code");
+        typeLabel.setLabelFor(getDCSCodeComboBox());
         GridPane.setConstraints(typeLabel, 0, 0);
         gridPane.getChildren().add(typeLabel);
 

src/main/java/io/github/dsheirer/gui/playlist/alias/identifier/EsnEditor.java

@@ -54,6 +54,7 @@ public class EsnEditor extends IdentifierEditor<Esn>
         gridPane.setHgap(5);
 
         Label typeLabel = new Label("ESN");
+        typeLabel.setLabelFor(getEsnField());
         GridPane.setConstraints(typeLabel, 0, 0);
         gridPane.getChildren().add(typeLabel);
 

src/main/java/io/github/dsheirer/gui/playlist/alias/identifier/LojackEditor.java

@@ -47,6 +47,7 @@ public class LojackEditor extends IdentifierEditor<LoJackFunctionAndID>
         gridPane.setHgap(5);
 
         Label typeLabel = new Label("LoJack Function");
+        typeLabel.setLabelFor(getFunctionComboBox());
         GridPane.setConstraints(typeLabel, 0, 0);
         gridPane.getChildren().add(typeLabel);
 
@@ -57,6 +58,10 @@ public class LojackEditor extends IdentifierEditor<LoJackFunctionAndID>
         gridPane.getChildren().add(getIdentifierField());
 
         Label helpLabel = new Label("Format: 5 numbers, characters or (*)wildcard - e.g. AB*12");
+        //The identifier field has no label of its own, so the help label provides its accessible name and help text
+        helpLabel.setLabelFor(getIdentifierField());
+        helpLabel.setAccessibleText("LoJack ID");
+        getIdentifierField().setAccessibleHelp(helpLabel.getText());
         GridPane.setConstraints(helpLabel, 3, 0);
         gridPane.getChildren().add(helpLabel);
 

src/main/java/io/github/dsheirer/gui/playlist/alias/identifier/NXDNTypeDEditor.java

@@ -76,11 +76,13 @@ public class NXDNTypeDEditor<T extends AliasID & INXDNTypeD> extends IdentifierE
         gridPane.add(new Label("NXDN Type-D"), 0, 0);
 
         Label homeRepeaterLabel = new Label("Home Repeater");
+        homeRepeaterLabel.setLabelFor(mHomeRepeaterField);
         GridPane.setHalignment(homeRepeaterLabel, HPos.RIGHT);
         gridPane.add(homeRepeaterLabel, 1, 0);
         gridPane.add(mHomeRepeaterField, 2, 0);
 
         Label identifierFieldLabel = new Label(identifierLabel);
+        identifierFieldLabel.setLabelFor(mIdentifierField);
         GridPane.setHalignment(identifierFieldLabel, HPos.RIGHT);
         gridPane.add(identifierFieldLabel, 3, 0);
         gridPane.add(mIdentifierField, 4, 0);

src/main/java/io/github/dsheirer/gui/playlist/alias/identifier/NXDNTypeDRangeEditor.java

@@ -89,15 +89,21 @@ public class NXDNTypeDRangeEditor<T extends AliasID & INXDNTypeDRange> extends I
         gridPane.add(new Label("NXDN Type-D"), 0, 0);
 
         Label homeRepeaterLabel = new Label("Home Repeater");
+        homeRepeaterLabel.setLabelFor(mHomeRepeaterField);
         GridPane.setHalignment(homeRepeaterLabel, HPos.RIGHT);
         gridPane.add(homeRepeaterLabel, 1, 0);
         gridPane.add(mHomeRepeaterField, 2, 0);
 
         Label rangeFieldLabel = new Label(rangeLabel);
+        rangeFieldLabel.setLabelFor(mMinField);
+        rangeFieldLabel.setAccessibleText(rangeLabel + " start");
         GridPane.setHalignment(rangeFieldLabel, HPos.RIGHT);
         gridPane.add(rangeFieldLabel, 3, 0);
         gridPane.add(mMinField, 4, 0);
-        gridPane.add(new Label("-"), 5, 0);
+        Label dashLabel = new Label("-");
+        dashLabel.setLabelFor(mMaxField);
+        dashLabel.setAccessibleText(rangeLabel + " end");
+        gridPane.add(dashLabel, 5, 0);
         gridPane.add(mMaxField, 6, 0);
 
         getChildren().add(gridPane);

src/main/java/io/github/dsheirer/gui/playlist/alias/identifier/P25FullyQualifiedRadioIdEditor.java

@@ -70,6 +70,7 @@ public class P25FullyQualifiedRadioIdEditor extends IdentifierEditor<P25FullyQua
         gridPane.getChildren().add(getProtocolLabel());
 
         Label valueLabel = new Label("WACN");
+        valueLabel.setLabelFor(getWacnField());
         GridPane.setHalignment(valueLabel, HPos.RIGHT);
         GridPane.setConstraints(valueLabel, 1, 0);
         gridPane.getChildren().add(valueLabel);
@@ -78,6 +79,7 @@ public class P25FullyQualifiedRadioIdEditor extends IdentifierEditor<P25FullyQua
         gridPane.getChildren().add(getWacnField());
 
         Label systemLabel = new Label("System");
+        systemLabel.setLabelFor(getSystemField());
         GridPane.setHalignment(systemLabel, HPos.RIGHT);
         GridPane.setConstraints(systemLabel, 3, 0);
         gridPane.getChildren().add(systemLabel);
@@ -86,6 +88,7 @@ public class P25FullyQualifiedRadioIdEditor extends IdentifierEditor<P25FullyQua
         gridPane.getChildren().add(getSystemField());
 
         Label radioLabel = new Label("Radio ID");
+        radioLabel.setLabelFor(getRadioField());
         GridPane.setHalignment(radioLabel, HPos.RIGHT);
         GridPane.setConstraints(radioLabel, 5, 0);
         gridPane.getChildren().add(radioLabel);

src/main/java/io/github/dsheirer/gui/playlist/alias/identifier/P25FullyQualifiedTalkgroupEditor.java

@@ -70,6 +70,7 @@ public class P25FullyQualifiedTalkgroupEditor extends IdentifierEditor<P25FullyQ
         gridPane.getChildren().add(getProtocolLabel());
 
         Label valueLabel = new Label("WACN");
+        valueLabel.setLabelFor(getWacnField());
         GridPane.setHalignment(valueLabel, HPos.RIGHT);
         GridPane.setConstraints(valueLabel, 1, 0);
         gridPane.getChildren().add(valueLabel);
@@ -78,6 +79,7 @@ public class P25FullyQualifiedTalkgroupEditor extends IdentifierEditor<P25FullyQ
         gridPane.getChildren().add(getWacnField());
 
         Label systemLabel = new Label("System");
+        systemLabel.setLabelFor(getSystemField());
         GridPane.setHalignment(systemLabel, HPos.RIGHT);
         GridPane.setConstraints(systemLabel, 3, 0);
         gridPane.getChildren().add(systemLabel);
@@ -86,6 +88,7 @@ public class P25FullyQualifiedTalkgroupEditor extends IdentifierEditor<P25FullyQ
         gridPane.getChildren().add(getSystemField());
 
         Label radioLabel = new Label("Talkgroup");
+        radioLabel.setLabelFor(getTalkgroupField());
         GridPane.setHalignment(radioLabel, HPos.RIGHT);
         GridPane.setConstraints(radioLabel, 5, 0);
         gridPane.getChildren().add(radioLabel);