[PD] timestretching for slicer

Ken Restivo ken at restivo.org
Sun Oct 7 18:53:30 CEST 2007


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On Tue, Oct 02, 2007 at 11:07:59AM +0200, Derek Holzer wrote:
> Time stretching is usually done one of two ways, both of which involve a 
> kind of "windowing" of the array: you can use an FFT analysis (of which 
> there are examples which come with PD), or you can use granulation.
> 
> In general, FFT is more accurate, but more expensive. Granulation is 
> used to squeeze the samples in Ableton Live into the BPMs/divisions that 
> one wants. It can also be fairly accurate, the smaller the grains, the 
> more grains are used and the the more overlaps the grains have.
> 
> Check my ParticleChamber abstraction for a use of windowed array 
> granulation for time domain manipulation independent of pitch.
> 
> http://www.puredata.org/Members/derek/Particlechamber.zip/
> http://www.puredata.info/Members/derek/screenshot.png
> 

Do you mean the "unauthorized" grid plugin?

If it is "unauthorized", should I be using it? Is there something wrong with it? Are there licensing issues?

- -ken
- --------------------
> 
> F R E N K wrote:
> > Hello!
> > 
> > Thanks to everybody for the quick solutions for the clicking problem... 
> > I have a new question, is there a way to perform timestretching on 
> > arrays? Or on anything, this would probably be the final step for having 
> > a great live slicer!
> > 
> > thanx!
> > 
> > Rodrigo
> > 
> > ------------------------------------------------------------------------
> > Con Windows Live Spaces en Prodigy/MSN abre tu mundo y crea tu propio 
> > espacio. Es gratis <http://spaces.live.com/>
> > 
> > 
> > ------------------------------------------------------------------------
> > 
> > _______________________________________________
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> 
> -- 
> derek holzer ::: http://www.umatic.nl ::: http://blog.myspace.com/macumbista
> ---Oblique Strategy # 175:
> "What are the sections sections of? Imagine a caterpillar moving"
> 
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