Speex dev - Jan 2005 - Pitch Shift

Hello,  Friends,
    At first I should say sorry, because my question maybe is not
related with Speex dev.
   
   Since Speex codec is based on CELP technology,  so if we change the
pitch intentionally  when encoding/decoding spx files, can we get the
Pitch Shifting effect without speech formant changed?


Regards,
James.

>    Since Speex codec is based on CELP technology,  so if we change the
> pitch intentionally  when encoding/decoding spx files, can we get the
> Pitch Shifting effect without speech formant changed?
With a 1-line hack in the decoder, you can indeed create a pitch
shifter. However, expect the results not to be as good as for a
"real" (originally designed for that) pitch shifter.

	Jean-Marc

-- 
Jean-Marc Valin <Jean-Marc.Valin@USherbrooke.ca>
Universit? de Sherbrooke