Pitch shifting

G09.pitchshift.pd in the help patches is an implementation of pitch shift with 2 overlapping delays. Miller explains the techniques in his online book. Here is a more detailed explanation, followed (click on next>>) by an implementation of pitchshifting library. You can download this tool and try it for yourself. This is one of the great things about Pd and open source -  it allows anyone to contribute from their own expertise. 

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