!7
p-exp {
  short[] x = new[44];
  for i over x: x[i] = (short) random(-100, 100);
  double a = autocorrelationOfAudioSamples(x);
  double aa = normalizedAutocorrelationOfAudioSamples(x);
  print(a);
  for i over x: x[i] *= 2;
  double b = autocorrelationOfAudioSamples(x);
  double bb = normalizedAutocorrelationOfAudioSamples(x);
  print(b);
  print(doubleRatio(b, a)); // should be 4
  print(aa + " " + bb);
  print(doubleRatio(bb, aa)); // should be 1
}