let timer = 3000;

var fft

​

function preload(){

  for (let i = 0; i < 6; i=i+1){

    sounds[i] = loadSound("sounds/" + i + ".mp3")

  }

}

​

function setup(){

  createCanvas(windowWidth, windowHeight)

 setInterval(draw, 5000)

  fft = new p5.FFT()

}

​

function draw(){

  background(0)

  stroke(255)

  var wave = fft.waveform()

  beginShape()

  for (var i = 0; i < width; i++) {

    var index = floor(map(i, 0, width, 0, wave.length))

    var x = i

    var y = wave[index] * 300 + height / 2

    point(x,y)

  }

  endShape()

  if (millis() > timer){

   let randomSound = floor(random(sounds.length))

   sounds[randomSound].play()

    timer=timer+round(random(2000,3500))

  }

}

​