class:: BPeakEQ summary:: Parametric equalizer categories:: UGens>Filters>BEQSuite related:: Classes/SOS, Classes/BLowPass, Classes/BLowPass4, Classes/BHiPass, Classes/BHiPass4, Classes/BPeakEQ, Classes/BLowShelf, Classes/BHiShelf, Classes/BBandPass, Classes/BBandStop, Classes/BAllPass description:: The B equalization suite is based on the Second Order Section (link::Classes/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. :: classmethods:: method:: ar argument:: in input signal to be processed. argument:: freq center frequency. WARNING: due to the nature of its implementation frequency values close to 0 may cause glitches and/or extremely loud audio artifacts! argument:: rq the reciprocal of Q. bandwidth / cutoffFreq. argument:: db boost/cut the center frequency (in dBs). argument:: mul argument:: add examples:: code:: s.boot; ( z = { // toy with boost/cut BPeakEQ.ar( SoundIn.ar([0,1]), MouseX.kr(20, 20000, \exponential), 0.8, // rq MouseY.kr(12.0, -12.0, \linear), 0.5); // mul }.play) z.release; ( z = { // toy with rq BPeakEQ.ar( SoundIn.ar([0,1]), MouseX.kr(20, 20000, \exponential), MouseY.kr(10, 0.4, \linear), // rq 6, // boost/cut - +6dB 0.5); // mul }.play) z.release; ::