HelpSource/Classes/LPF.schelp

   1 class:: LPF
   2 summary:: 2nd order Butterworth lowpass filter
   3 related:: Classes/BPF, Classes/BRF, Classes/HPF
   4 categories::  UGens>Filters>Linear
   5
   6
   7 Description::
   8
   9 A second order low pass filter.
  10
  11
  12 classmethods::
  13
  14 method::ar, kr
  15
  16 argument::in
  17
  18 The input signal.
  19
  20
  21 argument::freq
  22
  23 Cutoff frequency in Hertz.
  24
  25
  26 argument::mul
  27
  28 Output will be multiplied by this value.
  29
  30
  31 argument::add
  32
  33 This value will be added to the output.
  34
  35
  36 Examples::
  37
  38 code::
  39 { LPF.ar(Saw.ar(200,0.1), SinOsc.kr(XLine.kr(0.7,300,20),0,3600,4000)) }.play;
  40
  41 // kr:
  42 (
  43 { var ctl = LPF.kr(LFPulse.kr(8), SinOsc.kr(XLine.kr(1, 30, 5)) + 2);
  44         SinOsc.ar(ctl * 200 + 400)
  45 }.play;
  46 )
  47
  48 (
  49 { var ctl = LPF.kr(LFPulse.kr(8), MouseX.kr(2, 50, 1));
  50         SinOsc.ar(ctl * 200 + 400)
  51 }.play;
  52 )
  53 ::
  54