0605sequencer3

// remember to add the sound library : p5.sound

var osc1, osc2; // this is a variable which we will use for an oscillator

var env1, env2; // this is a variable which we wlll use for the envelope

​

// MIDI notes are by semitone

// 60 is middle C, 61 would be the C# above middle C, 59 would be the B below middle C, etc.

// octaves move by 12. So 72 is the C above middle C.

var sequence = [60, 63, 65, 62, 60, 67, 68, 70, 72, 60, 58, 62, 74, 63]; // MIDI

var s1 = 0;

var s2 = 0;

var speed1 = 6;

var speed2 = 9;

​

var fg = 255;

​

function setup() {

  createCanvas(windowWidth, windowHeight);

  background(255);

  // take 0.1 seconds to get to level 0.3, then 0.5 seconds to get to level 0

  env1 = new p5.Envelope(0.01, 0.3, 0.1, 0); 

  env2 = new p5.Envelope(0.01, 0.3, 0.1, 0); 

​

  osc1 = new p5.Oscillator(); // make an oscillator

  osc1.setType('sine'); // options are 'sine', 'sawtooth', 'triangle', 'square'

  osc1.start(); // start it

  osc1.amp(0);

  osc2 = new p5.Oscillator(); // make an oscillator

  osc2.setType('sine'); // options are 'sine', 'sawtooth', 'triangle', 'square'

  osc2.start(); // start it

  osc2.amp(0);

  textSize(60);

}

​

function draw() {

​

  background(255-fg);

  stroke(fg);

  fill(fg);

  text(frameCount + ": " + s1 + ": " + sequence[s1], width/2, height/2);

  text(frameCount + ": " + s2 + ": " + sequence[s2], width/2, height/2 + 60);

​

  if(frameCount%speed1==0) {

    playit1(sequence[s1]); // play a note

    s1 = (s1+1) % sequence.length; // increment which note

  }

  if(frameCount%speed2==0) {

    playit2(sequence[s2]); // play a note

    s2 = (s2+1) % sequence.length; // increment which note

  }

}

​

function mouseClicked()

{

  //playit();

}

​

function playit1(f)

{

  osc1.freq(midiToFreq(f)); // frequency to the argument

  env1.play(osc1);

}

​

function playit2(f)

{

  osc2.freq(midiToFreq(f)); // frequency to the argument

  env2.play(osc2);

}

​

​

​

​

​

​