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class:: MostChange
summary:: Output most changed.
related:: Classes/LeastChange, Classes/LastValue
categories:: UGens>Maths
Description::
Given two inputs code::a:: and code::b::, let code::da[t] = abs(a[t] - a[t - 1]):: and code::db[t] = abs(b[t] - b[t - 1])::. Output code::a[t]:: if code::da[t]:: is larger, and output code::b[t]:: if code::db[t]:: is larger. If code::da[t] == db[t]::, use whichever input was used last (assume code::a:: for the first sample of output).
classmethods::
method::ar, kr
argument::a
Input signal A.
argument::b
Input signal B.
Examples::
code::
(
d = SynthDef("help-MostChange", { |out, amp = 1.0|
var sound, in1, in2;
in1 = LFNoise1.ar(800, amp);
in2 = SinOsc.ar(800);
sound = MostChange.ar(in1, in2) * 0.1;
Out.ar(out, sound)
}).play;
)
d.set(\amp, 0.1);
d.set(\amp, 0);
d.set(\amp, 3);
d.free;
// the control that changed most is used for output:
(
d = SynthDef("help-MostChange", { |out, freq = 440|
var sound, internalFreq;
internalFreq = LFNoise0.ar(0.3, 300, 800);
sound = SinOsc.ar(
MostChange.kr(freq, internalFreq)
);
Out.ar(out, sound * 0.1)
}).play;
)
d.set(\freq, 800);
d.set(\freq, 800); //nothing changed
d.set(\freq, 900);
d.free;
::
|
