/usr/share/SuperCollider/HelpSource/Classes/Duty.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 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 | class:: Duty
summary:: Demand results from demand rate UGens.
related:: Classes/Demand, Classes/TDuty
categories:: UGens>Demand
Description::
A value is demanded of each UGen in the list and output according to a
stream of duration values. The unit generators in the list should be
'demand' rate.
When there is a trigger at the reset input, the demand rate UGens in the
list and the duration are reset. The reset input may also be a demand
UGen, providing a stream of reset times.
classmethods::
method::ar, kr
argument::dur
Time values. Can be a demand UGen or any signal. The next level
is acquired after duration.
argument::reset
Trigger or reset time values. Resets the list of UGens and the
duration UGen when triggered. The reset input may also be a
demand UGen, providing a stream of reset times.
argument::level
Demand UGen providing the output values.
argument::doneAction
A doneAction that is evaluated when the duration stream ends. See
link::Reference/UGen-doneActions:: for more detail.
Examples::
code::
(
{
var freq;
freq = Duty.kr(
Drand([0.01, 0.2, 0.4], inf), // demand ugen as durations
0,
Dseq([204, 400, 201, 502, 300, 200], inf)
);
SinOsc.ar(freq * [1, 1.01]) * 0.1
}.play;
)
(
{
var freq;
freq = Duty.kr(
MouseX.kr(0.001, 2, 1), // control rate ugen as durations
0,
Dseq([204, 400, 201, 502, 300, 200], inf)
);
SinOsc.ar(freq * [1, 1.01]) * 0.1
}.play;
)
::
Resetting the demand ugens:
code::
(
{
var freq;
freq = Duty.kr(
Dseq([0.2, 0.3, 0.4, Dseq([1, 1, 1, 2, 1, 2], inf)]) / 2,
Dust.kr(1), // control rate reset
Dseq([0, 1, 2, Dseq([1, 2, 3, 4, 5], inf)])
) * 30 + 250;
SinOsc.ar(freq * [1, 1.01]) * 0.1
}.play;
)
(
{
var freq;
freq = Duty.kr(
Dseq([0.2, 0.3, 0.4, Dseq([1, 1, 1, 2, 1, 2], inf)]) / 2,
Dseq([1, 2, 4, 5], inf), // demand rate reset
Dseq([0, 1, 2, Dseq([1, 2, 3, 4, 5], inf)])
) * 30 + 250;
SinOsc.ar(freq * [1, 1.01]) * 0.1
}.play;
)
::
Demand ugen as audio oscillator:
code::
(
{
var a, n=5, m=64;
a = {
var x;
x = { 0.2.rand2 } ! m;
x = x ++ ({ Drand({ 0.2.rand2 } ! n) } ! m.rand);
Dseq(x.scramble, inf)
} ! n;
Duty.ar(
MouseX.kr(1, 125, 1) * SampleDur.ir * [1, 1.02],
0,
Dswitch1(a, MouseY.kr(0, n-1))
)
}.play;
)
::
single sample feedback: a lin cong algorithm:
code::
(
b = Buffer.alloc(s, 1);
{
var x, y, rate, a, c, m;
rate = MouseX.kr(100, SampleRate.ir);
a = 1.1;
c = 0.13;
m = 1.0;
x = Dbufrd(b); // read from buffer
x = x * a + c % m;
y = Dbufwr(x, b); // write to buffer
Duty.ar(1 / rate, 0, y) * 0.1;
}.play;
)
::
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