let fft;

​

function setup() {

  createCanvas(1024, 400);

  mic = new p5.AudioIn();

  mic.start();

  fft = new p5.FFT();

  fft.setInput(mic);

}

​

function draw() {

  background(220);

  //   let level = mic.getLevel();

  //   if (level >0.1) background(random(255));

  //   ellipse (width/2,height/2,level *300, level *100);

  //   console.log(level);

  let bins = fft.analyze();

  for (let b = 0; b < bins.length; b++) {

    let bin = bins[b];

    line(b, height - bin, b, height);

    //     line (b,0,b,bin);

  }

  // console.log(stuff);

}

​