2.0 KiB
JMBE Library
The Java Multi-Band Excitation (JMBE) library provides decoder support for converting IMBE encoded audio frames to normal audio so that you can listen to the audio calls over your computer speakers.
Website: JMBE
Patent Warning
The JMBE library contains source code that may be patent protected. Users should check local laws before downloading, compiling, using, or DISTRIBUTING compiled versions of the JMBE library.
Copyright Notice
Copyrights for the terms MBE and IMBE are the property of their respective owners.
Adding JMBE to SDRTrunk for decoding MBE audio
Download the jmbe_builder.zip (windows) or the jmbe_builder.tar.gz (linux) file to your computer and uncompress the file. These files are available in the Download folder
Run the make_jmbe_library_windows.bat (windows) or the make_jmbe_library_linux.sh (linux) file. This will download the source code and create the jmbe-x.x.x.jar file. The file that gets created will have version numbers in place of the x's in the filename.
Copy the jmbe-x.x.x.jar file to the same folder where you run the sdrtrunk scripts to start the sdrtrunk program.
Start SDRTrunk normally and the program will automatically discover and use the jmbe library.
Troubleshooting
If you download, compile and copy the JMBE library jar file to the same directory as the SDRTrunk application, you should not have any issues.
SDRTrunk will generate a log entry to let you know if it discovered the jmbe library correctly for each P25 channel that you have decoding:
09:38:54.166 INFO d.p.audio.P25AudioOutput - JMBE audio conversion library successfully loaded - P25 audio will be available
Or, when the library cannot be found, each channel will log:
09:38:54.166 INFO d.p.audio.P25AudioOutput - JMBE audio conversion library NOT FOUND