BLowShelf Low Shelf.

BLowShelf.ar(in, freq, rs, db, mul, add)

in - input signal to be processed.

freq - center frequency.

rs - 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 freq/SampleRate.ir and db.

db - gain. boost/cut the center frequency in dBs.

The B equalization suite is based on the Second Order Section (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.

see also: SOS, BLowPass, BLowPass4, BHiPass, BHiPass4, BPeakEQ, BHiShelf, BBandPass, BBandStop, BAllPass.

s.boot;

(

z = { // toy around with boost/cut

BLowShelf.ar(

SoundIn.ar([0,1]),

MouseX.kr(40,6000,\exponential),

1.0, // rs

MouseY.kr(24.0, -24.0, \linear),

0.5); // mul

}.play)

z.release;

(

z = { // toy around with rs

BLowShelf.ar(

SoundIn.ar([0,1]),

MouseX.kr(20,6000,\exponential),

MouseY.kr(0.1, 1.0, \linear), // rs

6,

0.5); // mul

}.play)

z.release;