**PV_BrickWall ****partially zero bins**

**Inherits from: ****Object**** : ****AbstractFunction**** : ****UGen**** : ****PV_ChainUGen**

**PV_BrickWall(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.

See also FFT Overview.

(

{ var in, chain;

in = WhiteNoise.ar(0.2);

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

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

IFFT(chain)

}.play;

)