/usr/share/SuperCollider/HelpSource/Classes/Prand.schelp is in supercollider-common 1:3.8.0~repack-2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 | class:: Prand
summary:: embed values randomly chosen from a list
related:: Classes/Pxrand, Classes/Pwrand
categories:: Streams-Patterns-Events>Patterns>List
description::
Embed one item from the list at random for each repeat.
Examples::
code::
(
var a, b;
a = Prand([1, 2, 3, 4, 5], 6); // return 6 items
b = a.asStream;
7.do({ b.next.postln; });
)
// return also a subpattern:
(
var a, b;
a = Prand([1, Pseq([10, 20, 30]), 2, 3, 4, 5], 6); // return 6 items
b = a.asStream;
7.do({ b.next.postln; });
)
//Prand used as a sequence of pitches:
(
SynthDef(\help_sinegrain,
{ arg out=0, freq=440, sustain=0.05;
var env;
env = EnvGen.kr(Env.perc(0.01, sustain, 0.2), doneAction:2);
Out.ar(out, SinOsc.ar(freq, 0, env))
}).add;
)
(
a = Prand(#[60, 61, 63, 65, 72], inf).asStream;
Routine({
loop({
Synth(\help_sinegrain, [\freq, a.next.midicps]);
0.2.wait;
})
}).play;
)
::
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