[Speex-dev] Echo cancellation with different sound card for speaker and microphone

[Peter Meerwald]

Hello Gisle,

> This sounds for me like the above problem has been solved, or that at 
> least it now works in some cases even if the speakers and microphone are 
> unsynchronized, and that it thus may work with speaker and mic on 
> different soundcards.

maybe have a look at PulseAudio and the pluggable echo cancellation 
modules, Speex among them; your best bet may be the echo canceller 
from webrtc which is also supported

some drift / delay compensation is implemented there

regards, p.

-- 

Peter Meerwald
+43-664-2444418 (mobile)