BRZ2 two zero fixed midcut
BRZ2.ar(in, mul, add)
A special case fixed filter. Implements the formula:
out(i) = 0.5 * (in(i) + in(i-2))
This filter cuts out frequencies around 1/2 of the Nyquist frequency.
Compare:
{ WhiteNoise.ar(0.25) }.play;
{ BRZ2.ar(WhiteNoise.ar(0.25)) }.play;