search for: teephnes

...canceller support PCM 16 audio or must I use the speex codec? 2. I read that speex exho cancellation works better when frames are squares of 2. Can this be the problem that I use 160 samples in frame? 3 stream without echo and stream with echo are on different volume level becaouse the mics on the teephnes are not same. Can the different volume level of audio streams has bad influence to the speex echo canceller? 4. have you any idea what can I try to make echo cancellation wokr? Thank for any ideas and advances Milan