OP25 OP25 - DMR and Raspberry Pi 3

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miclass

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Dec 27, 2020
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For the minute or so that you had liquidsoap running I can see 6 transitions between receiving data from op25 and filling in blanks (idle time).
op25 is definitely outputting some data to the pcm stream.

I'd like you to capture a raw_output file and corresponding stderr.2 of a few minutes operation (running at "-v 9" or "-v 10") then PM'd me so that we can arrange a way for me to get the file. (Email, dropbox, google drive, ...)

Thanks

I tried again using the version from git commited on 1st March 2020 and it works! I finally can hear sound! :) (but I had to start audio.py manually in another terminal, multi_rx.py did not start it).

Now, I wuold like to ask some other questions:
  • Audio is quite low, alsamixer shows level at maximum. I am trying with different values of "audio_gain" in the audio section of the json, which is the accepted range of values for this parameter? is there another way to increase volume?
  • Can I save the Wave file while it gets played?
Thank you!
 

boatbod

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Mar 3, 2007
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Talbot Co, MD
I tried again using the version from git commited on 1st March 2020 and it works! I finally can hear sound! :) (but I had to start audio.py manually in another terminal, multi_rx.py did not start it).

Now, I wuold like to ask some other questions:
  • Audio is quite low, alsamixer shows level at maximum. I am trying with different values of "audio_gain" in the audio section of the json, which is the accepted range of values for this parameter? is there another way to increase volume?
  • Can I save the Wave file while it gets played?
Thank you!
Thanks, that confirms there has been some sort of regression in the DMR handling. I will explore further today.

If you are running audio.py you'll want to experiment with the -x command line option. Try "-x 2.0" to boost the volume.
 
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