[speex-dev] wideband bitrates

Jean-Marc Valin Jean-Marc.Valin at USherbrooke.ca
Thu Apr 1 09:50:45 PST 2004

Just looked at it and the wideband and ultra-wideband numbers are
completely off. The max bit-rate is really in the 44 kbps range and yes,
ultra-wideband is only about 2 kbps more than wideband.


Le jeu 01/04/2004 à 05:32, Chris Flerackers a écrit :
> Hi,
> I found this list of Speex bitrates in the mail archive.
> http://www.xiph.org/archives/speex-dev/200306/0004.html
> Can somebody confirm that this list is correct?
> I am wondering about the following:
> - On the Speex website it says: "Speex is based on CELP and is designed to
> compress voice at bitrates ranging from 2 to 44 kbps."
> while the bitrates listed here are e.g. 84400 for wideband mono.
> - There is almost no difference between wideband mono/stereo and
> ultrawideband mono/stereo
> Best regards,
> Chris
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Jean-Marc Valin
Université de Sherbrooke, Québec, Canada

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