https://www.inspiredacoustics.com/en/MIDI_note_numbers_and_center_frequencies

*/

​

// C Major Scale, MIDI note numbers

let notes = [60, 62, 64, 65, 67, 69, 70, 71, 72]

​

let synth;

// let slider;

// let playing = false;

​

function setup() {

  createCanvas(400, 400);

  // let button = createButton("Toggle Playback")

  // button.mousePressed(togglePlayback);

  synth = new p5.MonoSynth();

  slider = createSlider(10, 100, 30);

  // masterVolume(0.2);

}

​

function draw() {

  background(220);

​

  let beat = slider.value();

  // if (mouseIsPressed) {

  //   let freqToPlay = midiToFreq(notes[1]);

  //   // console.log(freqToPlay)

  //     synth.play(freqToPlay, 1);

  // }

​

  // if (playing) {

    if (frameCount % beat == 1) {

      let freqToPlay = midiToFreq(notes[0]);

      synth.play(freqToPlay, 1);

    }

    if (frameCount % (beat / 2) == 1) {

      let freqToPlay = midiToFreq(notes[4]);

      synth.play(freqToPlay, 1);

    }

    if (frameCount % 50 == 1) {

      let freqToPlay = midiToFreq(notes[5]);

      synth.play(freqToPlay, 1);

    }

  // }

}

​

function togglePlayback() {

  if (!playing) {

    playing = true;

  } else {

    playing = false;

  }

}