HelpSource/Classes/Pseries.schelp

   1 class:: Pseries
   2 summary:: artithmetic series pattern
   3 related:: Classes/Pgeom
   4 categories:: Streams-Patterns-Events>Patterns>List
   5
   6 description::
   7
   8 Returns a stream that behaves like an arithmetric series.
   9
  10 ClassMethods::
  11
  12 method::new
  13
  14 argument::start
  15 start value.
  16
  17 argument::step
  18 addition factor.
  19
  20 argument::length
  21 number of values produced.
  22
  23 Examples::
  24
  25 code::
  26 (
  27 var a;
  28 a = Pgeom(1.0, 1.1, inf);
  29 a.asStream.nextN(100).plot;
  30 )
  31
  32
  33 // sound example
  34 (
  35 SynthDef(\help_sinegrain,
  36         { arg out=0, freq=440, sustain=0.05;
  37                 var env;
  38                 env = EnvGen.kr(Env.perc(0.01, sustain, 0.2), doneAction:2);
  39                 Out.ar(out, SinOsc.ar(freq, 0, env))
  40         }).add;
  41 )
  42
  43 (
  44 var a;
  45 a = Pseries(300, 20, 70).asStream;
  46 {
  47         a.do { |val|
  48                 Synth(\help_sinegrain, [\freq, val]);
  49                 0.02.wait;
  50         }
  51 }.fork;
  52 )
  53
  54 (
  55 Pbind(
  56         \dur, 0.01,
  57         \instrument, \help_sinegrain,
  58         \freq, Pseries(800.0, Pbrown(-1.0, 3.0, 0.1, inf), inf)
  59 ).play;
  60 )
  61 ::