PV_Diffuser random phase shifting


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;

(

b = Buffer.alloc(s,2048,1);

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

)


(

//trig with MouseY

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

var in, chain;

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

chain = FFT(bufnum, in);

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

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

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

)


(

//trig with MouseY

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

var in, chain;

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

chain = FFT(bufnum, in);

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

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

}).play(s,[\out, 0, \bufnum, b.bufnum, \soundBufnum, c.bufnum]);

)


b.free; c.free;

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