Re: [Iaxclient-devel] uLaw in iaxclient - works for you?

[Ilguiz L. <ila...@in...>]

On Sun, Nov 07, 2004 at 07:02:45PM +0200, Dan wrote:
> The sound from ATA to DIAX is very choppy and with very high latency 
> (several seconds).

I am mostly calling from iaxphone via an IAX2 provider and experience
crackle at times.  I once tried to record the sound along with the
network exchange.  I used vsound with its LD_PRELOAD trick.  The
recorded incoming audio was perfect even when I heard crackle over the
speakers at the same time.  

(I was confused about my outgoing audio not recorded by vsound.  Now I
realized this should have been expected because my own voice I heard
from the speakers might only be a result of a hardware loop.  The
incoming voice data are probably never sent to /dev/dsp by software.)

So I am suspecting that the crackle might be due to the portaudio/OSS
implementation.

Unfortunately, the newer v.19 portaudio with the ALSA backend doesn't
seem to have a mixer interface yet.   Regards,

-- 
Ilguiz