The B equalization suite is based on the Second Order Section (SOS) biquad UGen.
input signal to be processed.
WARNING: due to the nature of its implementation frequency values close to 0 may cause glitches and/or extremely loud audio artifacts! center frequency.
the reciprocal of S. Shell boost/cut slope. When S = 1, the shelf slope is as steep as it can be and remain monotonically increasing or decreasing gain with frequency. The shelf slope, in dB/octave, remains proportional to S for all other values for a fixed
gain. boost/cut the center frequency in dBs.