https://github.com/ITPNYU/ICM-2019-Media/wiki/Homework-Cassie#week-10

​

https://p5js.org/reference/#/p5.SoundFile/duration

https://p5js.org/reference/#/p5.Delay

https://p5js.org/reference/#/p5.SoundFile/jump

*/

​

let sample;

let gong, synth, chorus;

​

let startTime = 0;

let duration;

let delay;

​

let playing = false;

​

function preload() {

  gong = loadSound("gong.mp3");

  synth = loadSound("synth.wav");

  chorus = loadSound("chorus.wav");

}

​

function mousePressed() {

  playing = true;

}

​

function setup() {

  createCanvas(400, 400);

  masterVolume(0.2);

  // set sample

  sample = chorus;

  // get length of song

  duration = sample.duration();

  // create a delay object for an echo effect

  delay = new p5.Delay();

}

​

function draw() {

  background(220);

  // set new playback position based on mouseX

  startTime = constrain(map(mouseX, 0, width, 0, duration), 0, duration - 0.5);

​

  if (playing) {

    // play song from new position for 0.1 seconds

    sample.jump(startTime, 0.1);

    // output a delayed version of sound

    delay.process(sample, 0.12, 0.7, 2300);

  }

}