OnePole one pole filter

OnePole.ar(in, coef, mul, add)

A one pole filter. Implements the formula :

out(i) = ((1 - abs(coef)) * in(i)) + (coef * out(i-1))

in - input signal to be processed

coef - feedback coefficient. Should be between -1 and +1

{ OnePole.ar(WhiteNoise.ar(0.5), 0.95) }.play

{ OnePole.ar(WhiteNoise.ar(0.5), -0.95) }.play

{ OnePole.ar(WhiteNoise.ar(0.5), Line.kr(-0.99, 0.99, 10)) }.play