HelpSource/Classes/Ramp.schelp

   1 class:: Ramp
   2 summary:: Break a continuous signal into line segments
   3 related:: Classes/Lag, Classes/VarLag, Classes/Slew
   4 categories::  UGens>Filters>Linear
   5
   6
   7 Description::
   8
   9 Break a continuous signal into linearly interpolated segments with specific durations.
  10
  11 Feeding Ramp with noise is similar to link::Classes/LFNoise1::
  12 code::
  13 Ramp.kr(WhiteNoise.kr(1),0.5)
  14 ::
  15 is equal to:
  16 code::
  17 LFNoise1.kr(1 / 0.5)
  18 ::
  19
  20 For smoothing out control signals, take a look at link::Classes/Lag:: and link::Classes/VarLag::
  21
  22 classmethods::
  23
  24 method::ar, kr
  25
  26 argument::in
  27
  28 The input signal.
  29
  30
  31 argument::lagTime
  32
  33 segment duration in seconds.
  34
  35
  36 argument::mul
  37
  38 Output will be multiplied by this value.
  39
  40
  41 argument::add
  42
  43 This value will be added to the output.
  44
  45
  46 Examples::
  47
  48 code::
  49 Server.internal.boot;
  50 (
  51 // used to lag pitch
  52 {
  53         SinOsc.ar(              // sine wave
  54                 Ramp.kr(                        // lag the modulator
  55                         LFPulse.kr(4, 0, 0.5, 50, 400), // frequency modulator
  56                         Line.kr(0, 1, 15)                               // modulate lag time
  57                 ),
  58                 0,      // phase
  59                 0.3     // sine amplitude
  60         )
  61 }.scope;
  62 )
  63
  64 // Compare
  65 (
  66 var pulse;
  67 {
  68         pulse = LFPulse.kr(8.772);
  69         Out.kr(0,[Ramp.kr(pulse, 0.025), Lag.kr(pulse, 0.025), pulse]);
  70 }.play(Server.internal);
  71 Server.internal.scope(3, bufsize: 44100, rate: \control, zoom: 40);
  72 )
  73 ::
  74