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From Botched Penguin, 6 Years ago, written in Plain Text.
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  1. var signal1 = (function() {
  2.  
  3.     var ka = 1;
  4.     var m = [];
  5.     var fn = 50;
  6.     var fm = 500;
  7.     var fs = 1000;
  8.     var t = 1;
  9.     var cos = Math.cos;
  10.     var pi = Math.PI;
  11.     var za = [];
  12.     var sin = Math.sin;
  13.     for(t;t<fn*t;t++) {
  14.         m.push(Math.sin(2*pi*fm/fs*t));
  15.         za.push((ka*m[t]+1)*cos(2*pi*fm/fs*t));
  16.     }
  17.  
  18.     return za;
  19. })
  20.  
  21. var signal1 = signal1();
  22.  
  23. module.exports = {
  24.     signal1
  25. }