gistfile1.txt

var generateBaseSignal = function(frequency, bufferSize, sampleRate) {
  var signal = [];

  for(var i = 0; i < bufferSize; i++) {
    var step = i * (frequency / sampleRate) % 1;
    signal[i] = Math.sin(2*Math.PI * step);
    //signal[i] = step < 0.5 ? 1 : -1;
  }
  
  return signal;
}