Classes | UGens > Maths

LeastChange : MostChange : UGen : AbstractFunction : Object

Output least changed
Source: Trig.sc

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 smaller, and output b[t] if db[t] is smaller. If da[t] == db[t], use whichever input was used last (assume a for the first sample of output).

Class Methods

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

From superclass: MostChange

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

From superclass: MostChange

Arguments:

a

Input signal A.

b

Input signal B.

Inherited class methods

Instance Methods

Inherited instance methods

Examples

(
d = { arg amp=1.0;
    var in1, in2;
    in1 = LFNoise0.ar(800, amp);
    in2 = SinOsc.ar(800);
    LeastChange.ar(in1, in2) * 0.1;
}.play;
)

d.set(\amp, 0.1);
d.set(\amp, 0);
d.set(\amp, 3);
d.free;

the control that changed least is used as output:

(
d = { arg freq=440;
    var internalFreq;
    internalFreq = LFNoise0.ar(0.3, 300, 800);
    SinOsc.ar(
        LeastChange.kr(freq, internalFreq) // two sources of change: one external, one internal
    ) * 0.1
}.play
);

d.set(\freq, 800);
d.set(\freq, 900);
d.free;