53 lines
1.7 KiB
Text
53 lines
1.7 KiB
Text
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class:: BHiShelf
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summary:: Hi Shelf
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categories:: UGens>Filters>BEQSuite
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related:: Classes/SOS, Classes/BLowPass, Classes/BLowPass4, Classes/BHiPass, Classes/BHiPass4, Classes/BPeakEQ, Classes/BLowShelf, Classes/BBandPass, Classes/BBandStop, Classes/BAllPass
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description::
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The B equalization suite is based on the Second Order Section (link::Classes/SOS::) biquad UGen.
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note::
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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.
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::
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classmethods::
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method:: ar
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argument:: in
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input signal to be processed.
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argument:: freq
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WARNING: due to the nature of its implementation frequency values close to 0 may cause glitches and/or extremely loud audio artifacts!
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center frequency.
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argument:: rs
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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 code::freq/SampleRate.ir:: and code::db::.
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argument:: db
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gain. boost/cut the center frequency in dBs.
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argument:: mul
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argument:: add
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examples::
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code::
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s.boot;
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(
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z = { // toy around with boost/cut
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BHiShelf.ar(
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SoundIn.ar([0,1]),
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MouseX.kr(2200, 18000, \exponential),
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1.0, // rs
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MouseY.kr(18.0, -18.0, \linear),
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0.5); // mul
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}.play)
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z.release;
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(
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z = { // toy around with rs
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BHiShelf.ar(
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SoundIn.ar([0,1]),
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MouseX.kr(2200, 18000, \exponential),
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MouseY.kr(0.1, 1.0, \linear), // rs
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6, // db
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0.5); // mul
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}.play)
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z.release;
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::
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