// Uncomment below to play each example

​

var synth;

​

function setup() {

  createCanvas(620, 200);

  synth = new Tone.Synth().toMaster();

}

​

function draw() {

  background(0);

}

​

function mousePressed(){

  //play 440 Hz for 0.1 seconds

  // synth.triggerAttackRelease(440, 0.1);

  //play A4 (440 Hz, referred to by its note name)

  //see frequencies of different notes here: http://www.phy.mtu.edu/~suits/notefreqs.html

  // synth.triggerAttackRelease("A4", 0.1);

  //play a random frequency

  // var frequency = random(100, 10000);

  // synth.triggerAttackRelease(frequency, 0.1);

  //play a random frequency within an octave

  // var frequency = random(440, 880);

  // synth.triggerAttackRelease(frequency, 0.1);

  //play a random frequency within an equal-tempered semitone

  // var frequency = random(329.63, 349.23);

  // synth.triggerAttackRelease(frequency, 0.1);

  //play a random frequency within a 5-note scale that I made up

  // var myScale = [200.32, 350.55, 480, 670, 800];

  // var pos = int(random(0, myScale.length));

  // var frequency = myScale[pos];

  // synth.triggerAttackRelease(frequency, 0.1);

  //play a random equal-tempered note between C3 and C5  (three octaves)

  //https://en.wikipedia.org/wiki/Scientific_pitch_notation

  //these are all within the C major scale, or the A minor scale

  //notes range from C0 to B8 (C0, D0, E0, F0, G0, A0, B0; C1, D1, and so on)

  var myScale = ["C3", "D3", "E3", "F3", "G3", "A3", "B3", 

              "C4", "D4", "E4", "F4", "G4", "A4", "B4", 

              "C5", "D5", "E5", "F5", "G5", "A5", "B5" ];

  var pos = int(random(0, myScale.length));

  var note = myScale[pos];

  synth.triggerAttackRelease(note, 0.1);  

}