PV_MagDiv division of magnitudes

PV_MagDiv(bufferA,  bufferB,   zeroed)

Divides magnitudes of two inputs and keeps the phases of the first input.

bufferA - fft buffer A.

bufferB - fft buffer B.

zeroed - number to use when bins are zeroed out, i.e. causing division by zero (defaults to 0.0001)

See also FFT Overview.

s.boot;

(

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

var inA, chainA, inB, chainB, chain;

inA = WhiteNoise.ar(0.2);

inB = LFSaw.ar(100, 0, 0.2);

chainA = FFT(LocalBuf(2048), inA);

chainB = FFT(LocalBuf(2048), inB);

chain = PV_MagDiv(chainA, chainB); 

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

}).play;

)

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

(

SynthDef("help-magMul2", { arg out=0, soundBufnum=0;

var inA, chainA, inB, chainB, chain;

inA = LFSaw.ar([100, 150], 0, 0.2);

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

chainA = FFT(LocalBuf(2048), inA);

chainB = FFT(LocalBuf(2048), inB);

chain = PV_MagDiv(chainA, chainB); 

Out.ar(out,  0.1 * IFFT(chain));

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

)

c.free;