[PD] Audio block manipulation strategies

PSPunch shima at pspunch.com
Mon Jun 9 00:04:49 CEST 2008


I am trying to stretch the information in an audio block.


a, b, c, d, e, ... , N    (where N is the block size - 1)

a, 0 , b, 0, c, ... , N/2
(later half of the original block can be trashed)

The target of the manipulation is the output of [rfft~]
Are there any efficient ways of such manipulations at audio rate?

I've lately been enjoying playing with the output of [rfft~] and would
also appreciate pointers to resources discussing pitch manipulation
using [rfft~] and [z~] or similar concepts not limited to Pd. Not quite
sure what term referrers to this method.


David Shimamoto

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