[Speex-dev] vbr questions

Jean-Marc Valin jean-marc.valin at usherbrooke.ca
Thu Aug 23 19:05:55 PDT 2007

bluefiftytwo wrote:
> Hello,
>       I am working on a real-time app for embedded hardware. I have two
> questions about the variable bit-rate option:
> 1. Can one designate a maximum bit-rate with the VBR option?

Yes, use SPEEX_SET_VBR_MAX_BITRATE, which has been added in 1.2beta2

> 2. Does VBR chunk the bit-rate up and down, i.e. what is the
> granularity/speed of the changes in the bit-rate and can that
> granularity be defined and/or defined on the fly?

VBR means the bit-rate can change in any way, at any time. If you want
to change that, you need to dig in the code, thought I don't really see
why you want VBR *and* prevent rapid changes in bit-rate.


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