HelpSource/Classes/LFPulse.schelp

   1 class::LFPulse
   2 summary::pulse oscillator
   3 categories::UGens>Generators>Deterministic
   4 related::Classes/LFSaw
   5
   6 description::
   7 A non-band-limited pulse oscillator. Outputs a high value of one and a low value of zero.
   8
   9 classmethods::
  10
  11 method::ar, kr
  12
  13 argument::freq
  14 frequency in Hertz
  15
  16 argument::iphase
  17 initial phase offset in cycles ( 0..1 )
  18
  19 argument::width
  20 pulse width duty cycle from zero to one.
  21
  22 examples::
  23
  24 a plot:
  25 code::
  26 { LFPulse.ar(Line.kr(100, 800, 0.1)) }.plot(0.1);
  27 ::
  28
  29 50 Hz wave:
  30 code::
  31 { LFPulse.ar(50) * 0.1 }.play;
  32 ::
  33
  34 modulating frequency:
  35 code::
  36 { LFPulse.ar(XLine.kr(1, 200, 10), 0, 0.2, 0.1) }.play;
  37 ::
  38
  39 amplitude modulation:
  40 code::
  41 { LFPulse.kr(XLine.kr(1, 200, 10), 0, 0.2) * SinOsc.ar(440) * 0.1 }.play;
  42 ::
  43
  44 used as both Oscillator and LFO:
  45 code::
  46 { LFPulse.ar(LFPulse.kr(3, 0, 0.3, 200, 200), 0, 0.2, 0.1) }.play;
  47 ::
  48
  49 scope:
  50 code::
  51 Server.internal.boot;
  52 { LFPulse.ar(500, 0, MouseX.kr, 0.5) }.scope;
  53 ::
  54
  55 compare with band limited Pulse UGen:
  56 code::
  57 (
  58 {
  59     [
  60         Pulse.ar(100, 0.3, 0.5),
  61         LFPulse.ar(100, 0, 0.3, 0.5)
  62     ] * 0.2
  63 }.scope(bufsize: 44100, zoom: 5)
  64 )
  65 ::
  66