[Speex-dev] Echocancellation on windows

Jean-Marc Valin jean-marc.valin at usherbrooke.ca
Mon Sep 17 23:39:53 PDT 2007

> does anybody has ran echocancellation successfully on windows ?
> I have a problem playing audio there. If you play a wav file no mater 
> how I play it after comparing the captured data with the original file 
> there is always
> difference in the audio length (for 18 sec of audio there is more than 
> 250 ms of difference). Which of course breaks echocancellation.
> I've tried playing the audio through mmsystem, directsound also using 
> portaudio lib. The only way of playing audio correctly was using 
> audacity binary version for windows.
> I've also tried compiling audacity from source and plying with it - and 
> again the problem persists.
> I've also determined that with audacity binary version that if the sound 
> is too load, I've put the volume on max value this problem occurs again.
> Any ideas? Can you point me of working solution I can look at ?

Sure, try this: http://www.ubuntu.com/ (sorry, couldn't resist)



P.S. I have no direct experience with it, but it seems to me like MS has 
managed to make sound on Windows suck even more than it does on Linux, 
which I consider quite an achievement.

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