I've been working on a project based on libjitsi multimedia library.
I experimented that aec (acoustic echo cancellation) works well on Mac
OSX system (Core Audio subsystem) ONLY if you have ONE playback
stream, but introduces an evident audio feedback (Larsen effect) when
receives multiple playback streams.
This issue is not present on Windows platform (Wasapi subsystem): aec
works well also with multiple playback streams.
Do you experimented this problem? Is it tied to the specific
implementation of aec on Core Audio subsystem? Any hint how to resolve