[PD] best method for non fft spitch shiting

[Miller Puckette]

Hi,

It's not perfect, but there's an example in 56.delay.pitchshift.pd in the
audio examples of the Pd distribution.

cheers
Miller

On Tue, Oct 30, 2001 at 10:11:05PM -0000, nullpointer wrote:
> Hi all,
> 
> THis is slightly off topic but the algo should hold the same for both a pd
> patch and a stand alone implementation.. I asked on music-dsp but no-one
> knew (or could be bothered to answer).
> 
> What is your reccomendation for the best method of implementing a non fft
> style delayline based pitchshifter/harmoniser in dsp. I have set up two
> readpoints 50% offset from each other and crossfading at the end and
> beginning of the line as an attempt to eliminate discontinuities and
> transients but i still get cips and flicker at the frequency of the delay
> buffer size...I understand that it is impossible to get a perfect shifter
> using this method but i am sure there must be methods to improve it?
> 
> Tom
> http://www.nullpointer.co.uk
> http://www.dividebyzero.org
> http://www.orphanrecords.co.uk
> ________________________________________________________