SoundPlayer

var song, amp, fft; //global variables

​

function preload(){

  // var song,song2,song3; //local variables

  song = loadSound("bensound-summer.mp3");

}

​

function setup() {

  createCanvas(windowWidth, windowHeight);

  background(100);

  amp = new p5.Amplitude();

  fft = new p5.FFT(0.9,64);

  song.play();

}

​

function draw() {

  colorMode(RGB);

  background(255,0,0,100);

  var level = amp.getLevel();

  var left = amp.getLevel(0);

  var right = amp.getLevel(1);

  println(amp.getLevel());

  noFill();

  // noStroke();

  // fill();

  stroke(255);

  strokeWeight(level*20);

  ellipse(width/2,height/2,200*level,200*level);

  ellipse(0,0,200*level,200*level);

  ellipse(width,0,200*level,200*level);

  ellipse(0,height,200*level,200*level);

  ellipse(width,height,200*level,200*level);

  //spectrum

  noStroke();

  colorMode(HSB,360,100,100);

  var spectrum = fft.analyze();

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

    var rectWidth = width/spectrum.length;

    var color = map(i,0,spectrum.length,0,360);

    fill(color,70,100);

    rect(rectWidth*i,height,rectWidth-5,-spectrum[i]*2);

  }

  // fill(255);

  // noStroke();

  // rect(0,height,width/2,-500*left); //left channel

  // rect(width/2,height,width/2,-500*right); //right channel

​

}