​

function setup() {

  createCanvas(400, 400);

  mic = new p5.AudioIn();

  mic.start();

}

​

function draw() {

  // background(220);

​

  let level = mic.getLevel();

​

  if(level > 0.05) background(0);

  if(level <= 0.05) background(220);

​

  ellipse(width / 2, height / 2, level * 1000, level * 1000);

​

  // console.log(level);

}

​