Sound sketching - OpenProcessing

mySketch
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let mic;
let x = 1;
let speed = 1;
function setup() {
  createCanvas(400, 200);
  background(255);
  
  mic = new p5.AudioIn();
  
  mic.start();
}
function draw() {
  let vol = mic.getLevel();
  fill(127);
  stroke(0);
  
  let h = map(vol, 0, 1, height, 0);
  ellipse(x ,h , 1, 1);
  x = x + speed;
  
  if (x>=width || x<0){
    speed = speed * -1;
  }
}
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