**PV_BinWipe combine low and high bins from two inputs**

**PV_BinWipe(bufferA, bufferB, wipe)**

Copies low bins from one input and the high bins of the other.

**bufferA** - fft buffer A.

**bufferB** - fft buffer B.

**wipe** - can range between -1 and +1.

if wipe == 0 then the output is the same as inA.

if wipe > 0 then it begins replacing with bins from inB from the bottom up.

if wipe < 0 then it begins replacing with bins from inB from the top down.

See also FFT Overview.

s.boot;

(

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

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

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

)

(

SynthDef("help-binWipe", { arg out=0,bufnumA=0, bufnumB=1;

var inA, chainA, inB, chainB, chain;

inA = WhiteNoise.ar(0.2);

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

chainA = FFT(bufnumA, inA);

chainB = FFT(bufnumB, inB);

chain = PV_BinWipe(chainA, chainB, MouseX.kr(-1, 1));

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

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

)

(

SynthDef("help-binWipe2", { arg out=0,bufnumA=0, bufnumB=1, soundBufnum=2;

var inA, chainA, inB, chainB, chain;

inA = WhiteNoise.ar(0.2);

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

chainA = FFT(bufnumA, inA);

chainB = FFT(bufnumB, inB);

chain = PV_BinWipe(chainA, chainB, MouseX.kr(-1, 1));

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

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

)

b.free; c.free; d.free;

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