grainIn nc tr dur in pan envbuf

Granulate an input signal

nc - the number of channels to output. If 1, mono is
     returned and pan is ignored.

tr - a kr or ar trigger to start a new grain. If ar, grains
     after the start of the synth are sample accurate.

The following args are polled at grain creation time

dur - size of the grain.

in - the input to granulate

pan - a value from -1 to 1. Determines where to pan the output in
      the same manner as PanAz.

envbuf - the buffer number containing a singal to use for the
         grain envelope. -1 uses a built-in Hanning envelope.

> do { n <- pinkNoise AR
>    ; let { x = mouseX KR (-0.5) 0.5 Linear 0.1
>          ; y = mouseY KR 5 25 Linear 0.1
>          ; t = impulse KR y 0 
>          ; g = grainIn 2 t 0.1 n x (-1) * 0.1 }
>      in audition (out 0 g) }