[speex-dev] echo suppression

Jean-Marc Valin Jean-Marc.Valin at USherbrooke.ca
Sun Feb 8 23:21:06 PST 2004

Yes, the echo cancellation code is very experimental. The algorithm
implemented (MDF) is very efficient, but it will *not* work out of the
box yet. Right now, it's mainly missing a cross-talk detector and some
tuning of the adaptation rate. I can't give a target date at which the
code will work, but if someone with echo-cancelling experience
volunteers to help, it might happen faster.


Le lun 09/02/2004 à 02:06, Tom Grandgent a écrit :
> There is experimental echo cancellation code.  Look in speex_echo.h 
> and mdf.c.  Unfortunately there's no sample code, and I don't think 
> anyone's had much luck getting the echo cancellation to work at all.  
> Would anyone like to prove me wrong?  I'd love to see this work!  
> I know it's really hard but just tonight the person I was talking 
> to asked me, "Is there ever going to be a version of this program 
> where we don't have to wear headphones?"  I told her, "I hope so, 
> but we're lucky to have something as good as what we have now!" :)
> Anyway, if you search the list archives you should be able to find 
> some comments about how the echo functions are supposed to be used...

Jean-Marc Valin, M.Sc.A., ing. jr.
LABORIUS (http://www.gel.usherb.ca/laborius)
Université de Sherbrooke, Québec, Canada

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