let fft; //the formula of how you sample a sound

​

function setup() {

  createCanvas(800, 400);

  mic = new p5.AudioIn();

  mic.start();

​

  fft = new p5.FFT();

  fft.setInput(mic);

}

​

function draw() {

  background(255);

  let bins = fft.analyze();

​

  //1024 bins

  //each bin take up one x position

​

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

  //     let bin = bins[b];

  //     line(b, height - bin, b, height);

  // }

  let wave = fft.waveform();

  beginShape();

  for (let w = 0; w < wave.length; w++) {

    let y = wave[w] * 200 + height / 2;

    vertex(w, y);

  }

  endShape();

}

​