My VoIP experience in Freerunner
fercerpav at gmail.com
Mon Aug 29 21:13:19 CEST 2011
Thanks for sharing the valueable info :)
Tiago Bortoletto Vaz <tiago at debian.org> writes:
> • I was not able to have default Freerunner headset working on an
> acceptable quality. Help will be very welcome.
I think the voip-handset state file is supposed to be used with the
handset (i.e. builtin mic and speaker) rather than with the
headset. You'd need to study the routing diagram to see what
changes are needed to get a voip-headset setup.
To check if it's working, you can simply load the statefile and then
use ``arecord'' to record a sample file, scp it to your PC and check
the levels and quality. Then scp some other known to be good file from
PC to FR and use ``aplay'' to check the playback quality.
Also, make sure you're not CPU-bound. As s3c2442 lacks an FPU, you
probably should avoid codecs that require floating point operations,
and also probably you might need to disable echo cancellation and/or
Be warned though, afaict the FR case (especially if you have both
screws properly secured, i personally use my device without those for
several years without any issues) provokes echo, so you might need to
find an acceptable way (yet-to-be-discovered hardware mod or software)
to do echo cancellation.
Be free, use free (http://www.gnu.org/philosophy/free-sw.html) software!
mailto:fercerpav at gmail.com
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