Denny Sheirer f792876c0a #1568 Updates NBFM decoder configuration so user can enable/disable high-pass filter option in the audio module to effect audio playback and audio recording of the demodulated audio. Disabling the filter allows recording of DC and sub-audible signalling that may be present in the demodulated audio (e.g. LTR or squelching signalling). (#1569) ...

Co-authored-by: sheirerd <sheirerd@ainfosec.com>

2023-06-05 07:19:16 -04:00

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DecodeConfigNBFM.java

#1568 Updates NBFM decoder configuration so user can enable/disable high-pass filter option in the audio module to effect audio playback and audio recording of the demodulated audio. Disabling the filter allows recording of DC and sub-audible signalling that may be present in the demodulated audio (e.g. LTR or squelching signalling). (#1569)

2023-06-05 07:19:16 -04:00

NBFMDecoder.java

#35 Updates AM & NBFM decoders to use Adaptive Squelch, a power squelch that includes an adaptive noise floor monitor. Implements vectorized magnitude operations for AM & FM decoders. Adds talkgroup assignment and squelch controls to AM channel configuration editor. Implements new AM gain control that attempts to normalize audio gain quickly at beginning of call/transmission and maintains that gain across lifecycle of the call and resets the gain for the next call. (#1540)

2023-05-07 07:27:44 -04:00

NBFMDecoderState.java

#35 Updates AM & NBFM decoders to use Adaptive Squelch, a power squelch that includes an adaptive noise floor monitor. Implements vectorized magnitude operations for AM & FM decoders. Adds talkgroup assignment and squelch controls to AM channel configuration editor. Implements new AM gain control that attempts to normalize audio gain quickly at beginning of call/transmission and maintains that gain across lifecycle of the call and resets the gain for the next call. (#1540)

2023-05-07 07:27:44 -04:00

NBFMTalkgroup.java

#36 NBFM squelch control. Updates NBFM decoder to incorporate squelch control. Squelch is a configuration item and also available to adjust at runtime with new 'Channel' tab in Now Playing window. All decoders were updated to produce continuous channel power (dB) measurements that are displayed in the Channel tab's new Power Meter. (#1100)

2021-11-14 06:59:58 -05:00