[arm-allstar] codec query question

[Al Beard]

Hi all,

Doing a search for "codec2 allstar" reveals a hit in 2013.
A lot has been accomplished since them in both Codec2 and the ARM
small board computers. I happily run the FreeDV GUI app on a Banana Pi
M2 Berry in "mode 700D" the "flagship" mode.

Of note is the improved Codec2 API this year enabling direct data to
be handled by the OFDM modem. I'm using that in a repeater focused on
mode 700D. Digital Voice addresses to major issues for a repeater on HF:

1) Is the signal valid?                                   (presence of sync)
2) Does the signal "want" to be repeated?   (text string embedded in the voice data)

ATM, there's no station ident or destination but these could be added.

The experimentation is around going for the lowest bit-rate yet intelligible audio.

Also, targeting FM for VHF/UHF systems with a better modem/codec combination.

Perhaps 10db better performance can be achieved than AMBE.

See www.freedv.org for the GUI app and the Codec2 library.

http://www.unixservice.com.au/parrot/src/ for my repeater

Alan VK2ZIW

On Thu, 4 Jun 2020 15:50:18 -0700, \"Bryan St Clair via ARM-allstar\" wrote
> Bingo! There it is.  Geez, never saw that format column in the past.
> 
> Thank you!
> 
> On Thu, Jun 4, 2020 at 3:32 PM "Doug Crompton via ARM-allstar" <
> arm-allstar at hamvoip.org> wrote:
> 
> > Bryan,
> >
> >  Widen your screen and in the Asterisk client do "iax2 show channels"   The
> > format will show there. Format will be unknown until the first time that
> > node transmits.
> >
> >
> > *73 Doug*
> >
> > *WA3DSP*
> >
> > *http://www.crompton.com/hamradio <http://www.crompton.com/hamradio>*
> >
> >
> > On Thu, Jun 4, 2020 at 6:15 PM "Bryan St Clair via ARM-allstar" <
> > arm-allstar at hamvoip.org> wrote:
> >
> > > Is there a command in the CLI to list all connected nodes and what codec
> > is
> > > in use for that connection?
> > >
> > > Thanks
> > >
> > > --
> > > Bryan
> > > K6CBR
> > > bryan at k6cbr.us
> > > 43918,439910
> > > _______________________________________________
> > >
> > > ARM-allstar mailing list
> > > ARM-allstar at hamvoip.org
> > > http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
> > >
> > > Visit the BBB and RPi2/3/4 web page - http://hamvoip.org
> > >
> > _______________________________________________
> >
> > ARM-allstar mailing list
> > ARM-allstar at hamvoip.org
> > http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
> >
> > Visit the BBB and RPi2/3/4 web page - http://hamvoip.org
> >
> 
> -- 
> Bryan
> K6CBR
> bryan at k6cbr.us
> 43918,439910
> _______________________________________________
> 
> ARM-allstar mailing list
> ARM-allstar at hamvoip.org
> http://lists.hamvoip.org/cgi-bin/mailman/listinfo/arm-allstar
> 
> Visit the BBB and RPi2/3/4 web page - http://hamvoip.org

---------------------------------------------------
Alan VK2ZIW

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