[speex-dev] About the number of channels

Jean-Marc Valin Jean-Marc.Valin at USherbrooke.ca
Wed Oct 1 10:35:08 PDT 2003

First, note that stereo support is only encoded as the energy difference
between the two channels (very simple model). If you want four channels,
one solution is write a similar channel-coupling module that puts the
data as extra information in the Speex stream (there are hooks for
that). The other solution is to simply encode the 4 channels


<p>Le mer 01/10/2003 à 12:01, Stéphane Laliberté a écrit :
> Is it possible to encode/decode more than 2 channels (stereo) stream 
> with Speex ?
> We are currently recording one,two or four channels stream and we had to 
> customize an ADPCM codec for the four channels part.
> ------------------------
> Stéphane Laliberté
> Analyste-Programmeur
> Novo Technologie inc.
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Jean-Marc Valin, M.Sc.A., ing. jr.
LABORIUS (http://www.gel.usherb.ca/laborius)
Université de Sherbrooke, Québec, Canada

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