PV_Diffuser random phase shifting

Inherits from: Object : AbstractFunction : UGen : PV_ChainUGen 

PV_Diffuser(buffer,  trig)

Adds a different constant random phase shift to each bin.

The trigger will select a new set of random phases.

buffer - fft buffer.

trig - a trigger selects a new set of random values.

See also FFT Overview.

s.boot;

(

// trig with MouseY

SynthDef("help-diffuser", { arg out=0;

var in, chain;

in = Mix.ar(SinOsc.ar(200 * (1..10), 0, Array.fill(10, {rrand(0.1, 0.2)}) ));

chain = FFT(LocalBuf(2048), in);

chain = PV_Diffuser(chain, MouseY.kr > 0.5 ); 

Out.ar(out, 0.5 * IFFT(chain).dup);

}).play(s,[\out, 0]);

)

d = Buffer.read(s,"sounds/a11wlk01.wav");

(

// trig with MouseY

SynthDef("help-diffuser2", { arg out=0, soundBufnum=2;

var in, chain;

in = PlayBuf.ar(1, soundBufnum, BufRateScale.kr(soundBufnum), loop: 1);

chain = FFT(LocalBuf(2048), in);

chain = PV_Diffuser(chain, MouseY.kr > 0.5 ); 

Out.ar(out, 0.5 * IFFT(chain).dup);

}).play(s,[\out, 0, \soundBufnum, d]);

)

d.free;