HelpSource/Classes/BPF.schelp

   1 class:: BPF
   2 summary:: 2nd order Butterworth bandpass filter.
   3 related:: Classes/BRF, Classes/HPF, Classes/LPF
   4 categories::  UGens>Filters>Linear
   5
   6
   7 Description::
   8
   9 A second order band 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 Centre frequency in Hertz.
  24
  25
  26 argument::rq
  27
  28 The reciprocal of Q. Q is conventionally defined as cutoffFreq / bandwidth, meaning rq = (bandwidth / cutoffFreq).
  29
  30 argument::mul
  31
  32 argument::add
  33
  34 Examples::
  35
  36 code::
  37 { BPF.ar(Saw.ar(200,0.5), FSinOsc.kr(XLine.kr(0.7,300,20),0,3600,4000), 0.3) }.play;
  38
  39 { BPF.ar(Saw.ar(200,0.5), MouseX.kr(100, 10000, 1), 0.3) }.play;
  40
  41         // BPF on control signals:
  42 (
  43 {       var vib = BPF.kr(PinkNoise.kr, MouseX.kr(1, 100, 1), 0.3) * 10;
  44         SinOsc.ar(vib * 200 + 600) * 0.2 }.play;
  45 )
  46 ::
  47