[Gta04-owner] Echo cancellation again

[Radek Polak]

Hi,
it seems now that last piece missing for telephony on GTA04 is good echo 
cancellation.

The software solution (gta04-gsm-voice-routing) is currently not working very 
good for echo cancellation. It has to be adaptive, so that it works in noisy 
environments and it needs some more tuning.

Anyways - new GTA04A04 users will probably want to use the hardware sound 
routing. So i wonder how GTA04 will do echo cancelling if the audio goes 
through wires. Will do modem do it?

I have tried to play with various PCM profiles (using the _OPCMPROF
) command, but it did not cancel the echo. Is it supposed to work only for  
audio transfered over wires? Did someone with GTA04A04 tried audio in GSM 
calls using the HW voice routing?

Btw please notice, that echo cancelling is must have. You have nice sounds, 
but for the other the echo is really annoying. People will hate you for this 
;-)

Regards

Radek