pitchShift in winSize pchRatio pchDispersion timeDispersion

A simple time domain pitch shifter.

> let r = mouseX KR 0.5 2.0 Linear 0.1
>     d = mouseY KR 0.0 0.1 Linear 0.1
> audition (out 0 (pitchShift (sinOsc AR 440 0) 0.2 r d 0))