Sound

var a, w, k, xi, yi, c;

​

function setup() {

  c = 4;

  a = 50;

  w = random(0, 5);

  k = (0, 2);

  xi = 0;

  yi = 0;

  createCanvas(windowWidth, windowHeight);

}

​

function draw() {

  background(100);

  translate(windowWidth / 2, windowHeight / 2);

  for (var i = 0; i <= c; i ++) {

    var angle = 360 / c;

    rotate(radians(angle));

    for (var x = xi + 50; x < windowWidth - 50; x += 50) {

      ellipse(x, yi + wave(a, w, k, x), 10, 10);

    }

  }

}

​

function wave(a, w, k, x) {

  t = millis() / 1000;

  y = a*sin(w*t - k*x);

  return(y);

}

​

function mousePressed() {

  c += 1;

}