/usr/share/SuperCollider/HelpSource/Classes/LinCongC.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 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 | class:: LinCongC
summary:: Linear congruential chaotic generator
categories:: UGens>Generators>Chaotic
related:: Classes/LinCongN, Classes/LinCongL
description::
A cubic-interpolating sound generator based on the difference equation:
teletype::
x(n+1) = (a * x(n) + c) % m
::
The output signal is automatically scaled to a range of [-1, 1].
sclang code translation:
code::
(
var a = 1.1, c = 0.13, m = 1, xi = 0, size = 64;
plot(size.collect { xi = (a * xi + c) % m });
)
::
classmethods::
method:: ar
argument:: freq
Iteration frequency in Hertz
argument:: a
Multiplier amount
argument:: c
Increment amount
argument:: m
Modulus amount
argument:: xi
Initial value of x
examples::
code::
// default initial params
{ LinCongC.ar(MouseX.kr(20, SampleRate.ir)) * 0.2 }.play(s);
::
code::
// randomly modulate params
(
{ LinCongC.ar(
LFNoise2.kr(1, 1e4, 1e4),
LFNoise2.kr(0.1, 0.5, 1.4),
LFNoise2.kr(0.1, 0.1, 0.1),
LFNoise2.kr(0.1)
) * 0.2 }.play(s);
)
::
code::
// as frequency control...
(
{
SinOsc.ar(
LinCongC.ar(
40,
LFNoise2.kr(0.1, 0.1, 1),
LFNoise2.kr(0.1, 0.1, 0.1),
LFNoise2.kr(0.1),
0, 500, 600
)
) * 0.4 }.play(s);
)
::
|