PV_BrickWall zero bins

PV_BrickWall.ar(buffer,  wipe)

Clears bins above or below a cutoff point.

buffer - fft buffer.

wipe - can range between -1 and +1.

if wipe == 0 then there is no effect.

if  wipe > 0 then it acts like a high pass filter, clearing bins from the bottom up. 

if  wipe < 0 then it acts like a low pass filter, clearing bins from the top down.

s.boot;

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

(

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

var in, chain;

in = {WhiteNoise.ar(0.2)}.dup;

chain = FFT(bufnum, in);

chain = PV_BrickWall(chain, SinOsc.kr(0.1)); 

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

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

)