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Hello all, I am trying out the echo cancellation of Speex (1.2beta2) on Windows XP. I use the Windows Media API (i.e. waveInOpen, waveOutOpen etc) for playback and capture, but I cannot make echo cancellation works in my use case. Here is a description of what I tried: (the sound is in 8kHz and 16 bits per sample, the frame size is 240, tail_length is long enough to cover the far end to near end delay) Experiment 1: A sin...

...32fb51d in libasound.so.2 (+0x4c51d) (0x0032739c) 7 0x7322c7b7 ALSA_widMessage+0xe07() in winealsa (0x0032741c) 8 0x6035e520 MMDRV_Message+0x250() in winmm (0x0032748c) 9 0x6035ee19 MMDRV_Open+0xe9() in winmm (0x003274dc) 10 0x60373028 WAVE_Open+0x1b8() in winmm (0x0032755c) 11 0x60373340 waveInOpen+0x50() in winmm (0x0032758c) 12 0x60e0c39c IDirectSoundCaptureBufferImpl_Create+0x63c() in dsound (0x003275cc) 13 0x60e0c6ba IDirectSoundCaptureImpl_CreateCaptureBuffer+0x6a() in dsound (0x0032760c) 14 0x00494ea8 in ventrilo (+0x94ea8) (0x0032b1bc) 0x6fdcd832: ret Modules: Module Address D...

As for me - speex_echo_cancellation is a better choise. Try using it in capture thread instead of those speex_echo_capture and speex_echo_playback functions. And please, describe your problem in details. Cause the fact that you "didn get echo cancellation" doesn't mean you are doing smth wrong. Regards, Anton A. Shpakovsky -----Original Message----- From: speex-dev-bounces at

...coding audio),CAudiosrc(Capturing Audio),CAudioSink(playback the audio). In CAudioSink::AudioPlayer() which is timer functon called every 5ms,i will decode the audio which i receive from server,play the decoded audio and after i am calling speex_echo_playback(). In CAudiosrc class i am calling waveInOpen(&hWaveIn, WAVE_MAPPER, &format,m_ThreadID,NULL, CALLBACK_THREAD); ON_THREAD_MESSAGE(MM_WIM_DATA, OnWaveInFun) In CAudiosrc ::OnWaveInFun() i am calling speex_echo_capture,speex_preprocess_run,speex_encode_int. void CspxEnDe::Init(int mode) { speex_mode = mode; initialized = 1; spe...

...nd ill-conditioned, and I have made no attempt on getting that to work (I'm not talking about an occasional DTMF bit here and there). Jean-Marc Eddy wrote: > Hello all, > > I am trying out the echo cancellation of Speex (1.2beta2) on Windows XP. I use the Windows Media API (i.e. waveInOpen, waveOutOpen etc) for playback and capture, but I cannot make echo cancellation works in my use case. Here is a description of what I tried: (the sound is in 8kHz and 16 bits per sample, the frame size is 240, tail_length is long enough to cover the far end to near end delay) > > > Exper...

...coding audio),CAudiosrc(Capturing Audio),CAudioSink(playback the audio). In CAudioSink::AudioPlayer() which is timer functon called every 5ms,i will decode the audio which i receive from server,play the decoded audio and after i am calling speex_echo_playback(). In CAudiosrc class i am calling waveInOpen(&hWaveIn, WAVE_MAPPER, &format,m_ThreadID,NULL, CALLBACK_THREAD); ON_THREAD_MESSAGE(MM_WIM_DATA, OnWaveInFun) In CAudiosrc ::OnWaveInFun() i am calling speex_echo_capture,speex_preprocess_run,speex_encode_int. void CspxEnDe::Init(int mode) { speex_mode = mode; initialized = 1; spe...