[Speex-dev] pre-encoding and encoding optimizations

Jean-Marc Valin jean-marc.valin at usherbrooke.ca
Thu Oct 4 16:44:53 PDT 2007

I guess you can always specify --quality 10, but you won't get 15 kbps
quality at 11 kbps. Depending on the application though, VBR could be an


Andrea wrote:
> I'm sorry if this message is slightly off topic, but I'd like to know an
> opinion from the speech compression experts reading this list.
> I'm using spheex to encode human voices at about 15kbps, with very good
> results. I was wondering if this is the best situation for my setup where I
> have all the voice pre compressed (not in real time) by very powerful
> servers with (near) unlimited processing time and computational resources
> and a client relatively slow (ARM4 processor at about 70MHz). The encoding
> phase time lenght is not important, I can let it run even for days if it
> helps compressing the output. The client decodes the data from a static
> file. My hope was to obtain something of the same quality I'm getting with
> at 15kbps with a lower bitrate, using more computational time and power on
> the encoding phase. The audio source are very clean and very high quality.
> Any hint?
> Thank you in advance,
> Andrea
> P.S.
> Jean-Marc, I can never say thank you enough for this wonderful software
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