[linux-audio-user] extreme time stretching

Steve Harris S.W.Harris at ecs.soton.ac.uk
Mon Mar 15 16:48:05 EST 2004


On Mon, Mar 15, 2004 at 10:21:00 +0100, Frank Barknecht wrote:
> Hallo,
> Erik de Castro Lopo hat gesagt: // Erik de Castro Lopo wrote:
> 
> > On Mon, 15 Mar 2004 15:21:01 -0500
> > Eric Dantan Rzewnicki <rzewnickie at rfa.org> wrote:
> > > For the purposes of time stretching or
> > > compressing sound, how does it compare to the way Erik's SRC or
> > > SoundTouch work? 
> >
> > SoundTouch is a true pithc independant time stretcher.
> 
> I think, Soundtouch uses a Fourier-based approach. Granular synthesis
> isn't really the best method of clean time stretching, I just
> mentioned it as one example of a technique, that can be used to do
> extreme streches. 

Soundtouch uses WSOLA, which is similar to granular synthesis, its not 
fequency domain like FFT or wavelets.

- Steve


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