107 lines
2.1 KiB
Text
107 lines
2.1 KiB
Text
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#lang scribble/manual
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@(require (for-label racket))
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@title{Pbus}
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isolate a pattern by restricting it to a bus@section{related}
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Classes/Pfx, Classes/Pfxb, Classes/Pgroup
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@section{categories}
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Streams-Patterns-Events>Patterns>Server Control
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@section{description}
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Starts a new group and plays the pattern in this group, on a private bus. The group and the bus is released when the stream has ended.
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This is useful in order to isolate a link::Classes/Pfx::.
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@section{ClassMethods}
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@section{method}
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new
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@section{argument}
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pattern
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@section{argument}
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dur
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delay to allow inner patterns to decay.
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@section{argument}
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fadeTime
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fading out the inner pattern after dur over this time.
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@section{argument}
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numChannels
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number of channels of the bus (should match the synthdef).
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@section{argument}
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rate
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bus rate.
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@section{Examples}
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@racketblock[
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(
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SynthDef(\echo, { arg out=0, maxdtime=0.2, dtime=0.2, decay=2, gate=1;
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var env, in;
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env = Linen.kr(gate, 0.05, 1, 0.1, 2);
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in = In.ar(out, 2);
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XOut.ar(out, env, CombL.ar(in * env, maxdtime, dtime, decay, 1, in));
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}, [\ir, \ir, 0.1, 0.1, 0]).add;
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SynthDef(\distort, { arg out=0, pregain=40, amp=0.2, gate=1;
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var env;
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env = Linen.kr(gate, 0.05, 1, 0.1, 2);
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XOut.ar(out, env, (In.ar(out, 2) * pregain).distort * amp);
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}, [\ir, 0.1, 0.1, 0]).add;
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SynthDef(\wah, { arg out=0, gate=1;
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var env, in;
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env = Linen.kr(gate, 0.05, 1, 0.4, 2);
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in = In.ar(out, 2);
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XOut.ar(out, env, RLPF.ar(in, LinExp.kr(LFNoise1.kr(0.3), -1, 1, 200, 8000), 0.1).softclip * 0.8);
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}, [\ir, 0]).add;
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)
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// watch the node structure as it changes
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s.waitForBoot({ s.plotTree });
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(
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var p, q, r, o;
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p = Pbind(\degree, Prand((0..7),12), \dur, 0.3, \legato, 0.2);
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q = Pfx(p, \echo, \dtime, 0.2, \decay, 3);
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r = Pfx(q, \distort, \pregain, 20, \amp, 0.25);
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o = Pfx(r, \wah);
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Ppar(
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[p, q, r, o].collect(Pbus(_)); // play each in a different bus.
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).play;
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)
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// compare to playing them together on one bus.
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(
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var p, q, r, o;
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p = Pbind(\degree, Prand((0..7),12), \dur, 0.3, \legato, 0.2);
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q = Pfx(p, \echo, \dtime, 0.2, \decay, 3);
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r = Pfx(q, \distort, \pregain, 20, \amp, 0.25);
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o = Pfx(r, \wah);
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Ppar([p, q, r, o]).play;
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)
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::
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]
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