[Speex-dev] Echo cancellation and synchronization

[Jean-Marc Valin]

Peter Vestberg a écrit :
> The problem seems to be that the sound output thread (and thus 
> speex_echo_playback()) sometimes executes three frames/"iterations" 
> before the sound input thread (and thus speex_echo_capture()) comes in. 
> How do I deal with this problem? I suspect I cannot really affect how 
> often the sound card lib requires a new frame or has one available.

Then I suggest doing the buffering yourself and using
speex_echo_cancellation() instead of the playback() and capture() calls.

	Jean-Marc