class:: TwoZero summary:: Two zero filter. related:: Classes/TwoPole categories:: UGens>Filters>Linear Description:: A two zero filter. classmethods:: method::ar, kr argument::in The input signal. argument::freq Frequency of zero angle. argument::radius Radius of zero. argument::mul Output will be multiplied by this value. argument::add This value will be added to the output. Examples:: code:: { TwoZero.ar(WhiteNoise.ar(0.125), XLine.kr(20,20000,8), 1) }.play ::