var song;

var button;

var amp;

var volhistory = [];

​

function toggleSong(){

  if (song.isPlaying()){

    song.pause();

  }else{

    song.play();

  }

  }

​

​

function preload() {

  song = loadSound("rnb.mp3");

}

​

function setup() {

  createCanvas(400, 400);

  song.play();

  button = createButton ('toggle');

  button.mousePressed(toggleSong);

  amp = new p5.Amplitude();

}

​

function draw() {

  background(0);

  var vol = amp.getLevel(); 

  console.log(vol);

  volhistory.push(vol);

  stroke(255);

  for (var i=0; i<volhistory.length; i++){

    var y = map (volhistory[i], 0,1, height,0)

    point(i, y);

  }

    //ellipse(200, 200, 200, vol * 600);

}

​