[Speex-dev] Bitrate Question

Ghost Wolf ghostdewolf at gmail.com
Mon Sep 15 09:19:00 PDT 2008

Speex only support only a certain set.
add -V and speex witch bitrate speex uses to encode and how it varies if 
you use variable bitrate.

Unfortunately I don't remember where I read about witch bittrates speex 
uses. (remember experimenting to get at bunch off batch files to make a 
comparison encoding.)


Ilya skrev:
> Hello developers,
> I have a question about supported bitrates for SPEEX.  Regardless of whether I specify a 10kbps or a 8kbps bitrate, the encoded .spx file is the same size and have the same PESQ value.  This makes me wonder if SPEEX supports arbitrary bitrates, or only a certain set.
> A few more details about my configuration:
> I am using SPEEX encoder version 1.1.12
> I am encoding a narrowband (8KHz) wav file
> The exact commands I issue are:
> speexenc --bitrate 8000 file.wav file8.spx
> speexenc --bitrate 10000 file.wav file10.spx
> Both of the encoded files, file8.spx and file10.spx are the same size.
> Please advice on what I am doing incorrectly.
> Thank you,
> Ilya
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