const dBa = [119, 114, 105, 103, 101, 100, 99, 95, 94, 92, 89];

​

let mic;

​

function todB(vol) {

  return log(vol) * 8.686;

}

​

function setup() {

  createCanvas(400, 400);

  mic = new p5.AudioIn();

  mic.start();

  frameRate(1);

}

​

function draw() {

  let vol = mic.getLevel();

  let drawText = 'New York City';

  background(220);

  for (let i = 0; i < dBa.length; i++) {

    if (dBa[i] > todB(vol) + 60 + 89) {

      drawText = cities[i];

    }

  }

  textAlign(CENTER);

  text(drawText, 200, 200);

}