HelpSource/Classes/Slope.schelp

   1 class:: Slope
   2 summary:: Slope of signal
   3 categories:: UGens>Analysis, UGens>Filters>Linear, UGens>Maths
   4
   5 description::
   6 Measures the rate of change per second of a signal.
   7 Formula implemented is:
   8
   9 code::
  10 out[i] = (in[i] - in[i-1]) * sampling_rate
  11 ::
  12
  13 classmethods::
  14 method:: ar, kr
  15 argument::in
  16 Input signal to measure.
  17 argument::mul
  18 argument::add
  19
  20 examples::
  21 code::
  22 (
  23 {
  24     var a, b, c, scale;
  25     a = LFNoise2.ar(2000);  // quadratic noise
  26     b = Slope.ar(a);        // first derivative produces line segments
  27     c = Slope.ar(b);        // second derivative produces constant segments
  28     scale = 0.0002; // needed to scale back to +/- 1.0
  29     [a, b * scale, c * scale.squared]
  30 }.plot
  31 )
  32 ::
  33
  34 For another example of Slope see link::Classes/AbstractFunction#hypot#AbstractFunction:hypot::.
  35