[speex-dev] Mixing audio

[Jean-Marc Valin]

Basically, there's no optimal solution to the problem. Speech codecs
just don't handle mixed streams optimally. So you'll have to do tests
and decide which solution gives you the best results.

        Jean-Marc

Le lun 10/11/2003 à 13:59, Oded a écrit :
> I have received your answer regarding the intention of developing
> audio mix algorithm based on Speex (a while ago...).
>  
> You've mentioned two different scenarios. 
> VOIP applications that can manage with high bit-rates can truly mix
> the audio just once at
> the receiving client. Today most sound cards can mix the decoded
> streams automatically (no need for mix software). 
>  
> The real problem is decoding mixing and than rencoding (where bit-rate
> count...).
> From my experience as a VOIP (and video conference) appication
> developer I still think that mixing few audio streams in software is a
> major problem trying to keep audio quality...
>  

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


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