60 lines
1.1 KiB
Text
60 lines
1.1 KiB
Text
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class:: Peak
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summary:: Track peak signal amplitude.
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related:: Classes/PeakFollower
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categories:: UGens>Analysis>Amplitude
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Description::
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Outputs the peak amplitude of the signal received at the input. When
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a trigger occurs at the code::reset:: input, the maximum
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output value is reset to the current value.
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Internally, the absolute value of the signal is used, to prevent
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underreporting the peak value if there is a negative DC offset. To obtain
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the minimum and maximum values of the signal as is, use the
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link::Classes/RunningMin:: and link::Classes/RunningMax:: UGens.
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classmethods::
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method::ar, kr
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argument::in
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The input signal.
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argument::trig
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Trigger. Resets the output value to the current input value. A trigger happens when the signal changes from non-positive to positive.
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Examples::
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code::
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(
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{
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SinOsc.ar(
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Peak.ar(Dust.ar(20), Impulse.ar(0.4)) * 500 + 200,
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0, 0.2
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)
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}.play;
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)
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// follow a sine lfo, reset rate controlled by mouse x
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(
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{
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SinOsc.ar(
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Peak.kr(SinOsc.kr(0.2), Impulse.kr(MouseX.kr(0.01, 2, 1))) * 500 + 200,
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0, 0.2
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)
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}.play;
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)
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::
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