​

let mic;

​

let r;

​

function setup() {

  createCanvas(windowWidth, windowHeight);

    mic = new p5.AudioIn();

  mic.start();

}

​

function draw() {

  background(0);

  for (let i = 0; i < 5; i++) {

    let p = new Particle();

    particles.push(p);

  }

  for (let i = particles.length - 1; i >= 0; i--) {

    particles[i].update();

    particles[i].show();

    if (particles[i].finished()) {

      particles.splice(i, 1);

    }

  }

​

  //sound

  let vol = mic.getLevel();

console.log(vol)

   r=map(vol,0,0.5,1,100);

}

​

class Particle {

  constructor() {

    this.x = random(width/4, 3*width/4);

    this.y = height;

    this.vx = random(-1, 1);

    this.vy = random(-5, -1);

    this.alpha = 255;

    this.d = 5*r;

  }

​

  finished() {

    return this.alpha < 0;

  }

​

  update() {

    this.x += this.vx;

    this.y += this.vy;

    this.alpha -= 3;

    // this.d -= random(0.05, 0.1);

    this.d -= random(0.05*r, 0.1*r);

​

  }

​

  show() {

    noStroke();

    fill(random(200,230), random(50, 150), 10, this.alpha);

    ellipse(this.x, this.y, this.d);

  }

}

​

function windowResized() {

  resizeCanvas(windowWidth, windowHeight);

}