Classes | UGens > Maths

MostChange : UGen : AbstractFunction : Object

Output most changed.
Source: Trig.sc
Subclasses: LeastChange

Description

Given two inputs a and b, let da[t] = abs(a[t] - a[t - 1]) and db[t] = abs(b[t] - b[t - 1]). Output a[t] if da[t] is larger, and output b[t] if db[t] is larger. If da[t] == db[t], use whichever input was used last (assume a for the first sample of output).

Class Methods

MostChange.ar(a: 0, b: 0)

MostChange.kr(a: 0, b: 0)

Arguments:

a

Input signal A.

b

Input signal B.

Inherited class methods

Instance Methods

Inherited instance methods

Examples

(
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;