wavepot.com is my new addiction, livecoding in javascript

gistfile1.js

var generated = false;
var currentNote = false;

var bpm = 600;
var sequence = [
  squareWave(50, 0.1),
  sineWave(440, 0.4),
  squareWave(50, 0.1),
  sineWave(540, 0.4),
  squareWave(50, 0.1),
  sineWave(640, 0.4),
  squareWave(50, 0.1),
  sineWave(340, 0.4),
  squareWave(50, 0.1),
  sineWave(440, 0.4),
  reset
];
 
function dsp(t) {
  if (!generated) {
    sequence.forEach(function(note, i) {
      setTimeout(function() {
        currentNote = note;
      }, i * (60000 / bpm)); // bpm
    });
    generated = true;
  }
  
  if (currentNote) { return currentNote(t); }
  else { return 0.1 * Math.sin(Math.PI * 2 * 440); }
}


// Sample generation functions
function sineWave(freq, amp) {
  return function(t) {
   return amp * Math.sin(2 * Math.PI * t * freq);
  };
}

function squareWave(freq, amp) {
  return function(t) {
    return amp * (((new Date()).getMilliseconds() % freq*10000) > (freq*10000)/2) ? 1: 0
  }
}

function reset() {
  generated = false;
  currentNote = false;
}

function rest() { return 0; }