[Speex-dev] Help on Speex VBR mode

Jean-Marc Valin Jean-Marc.Valin at USherbrooke.ca
Sat Feb 18 05:28:00 PST 2006

There's no doc about vbr.c except the few comments in the code. The
general idea is that there are lots of heuristics (e.g. voiced sounds
need more bits, near-silence requires less, ...) that give a certain
number of "points" for the current frame. Based on this, I have a table
to convert from "points" to bit-rate for a given vbr quality setting.
That being said, the VBR code could definitely be improved.


Le samedi 18 février 2006 à 12:45 +0100, Julien Bretin a écrit :
> I have a work to do about the VBR mode of Speex and the way it works.
> I must study the vbr.c file. I get the global idea about what the code
> does, but I'm not able to describe it in details.
> So I would like to know if there's somewhere a documentation about the
> vbr.c code that I could read to make me understand how it works ?
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