BAllPass All Pass Filter.

BAllPass.ar(in, freq, rq, mul, add)

in - input signal to be processed.

freq - center frequency.

rq - the reciprocal of Q.  bandwidth / cutoffFreq. 

The B equalization suite is based on the Second Order Section (SOS) biquad UGen.

note: Biquad coefficient calculations imply certain amount of CPU overhead. These plugin UGens contain optimizations such that the coefficients get updated only when there has been a change to one of

the filter's parameters. This can cause spikes in CPU performance and should be considered when using several of these units.

see also: SOS, BLowPass, BLowPass4, BHiPass, BHiPass4, BPeakEQ, BLowShelf, BHiShelf, BBandPass, BBandStop

s.boot;

(

z = { // thru

BAllPass.ar(

SoundIn.ar([0,1]),

MouseX.kr(10,18000,\exponential),

0.8, // rq

0.5); // mul

}.play)

z.release;

(

z = { // like a bandpass

var sig;

sig = SoundIn.ar([0,1]), * 0.5;

BAllPass.ar(sig, MouseX.kr(10,18000,\exponential), 0.8) + sig.neg

}.play)

z.release;