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class:: Decay2
summary:: Exponential decay
related:: Classes/Decay
categories:: UGens>Filters>Linear, UGens>Envelopes
Description::
link::Classes/Decay:: has a very sharp attack and can produce clicks.
Decay2 rounds off the attack by subtracting one Decay from another.
code:: Decay2.ar(in, attackTime, decayTime):: is equivalent to:
code::
Decay.ar(in, decayTime) - Decay.ar(in, attackTime)
::
classmethods::
method::ar, kr
argument::in
The input signal.
argument::attackTime
60 dB attack time in seconds.
argument::decayTime
60 dB decay time in seconds.
argument::mul
argument::add
Examples::
code::
// since attack and decay are a difference of two Decays,
// swapping the values, the envelope turns upside down:
plot({ Decay2.ar(Impulse.ar(1), 0.001, 0.01) })
plot({ Decay2.ar(Impulse.ar(1), 0.01, 0.001) })
// used as an envelope
{ Decay2.ar(Impulse.ar(XLine.kr(1,50,20), 0.25), 0.01, 0.2, FSinOsc.ar(600)) }.play;
// compare the above with Decay used as the envelope
{ Decay.ar(Impulse.ar(XLine.kr(1,50,20), 0.25), 0.2, FSinOsc.ar(600), 0) }.play;
::
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