constructor(vector, center, speed, osc){

    this.pos = vector;

    this.center = center;

    this.speed = speed;

    this.osc = osc;

    this.osc.amp(0.1);

    this.osc.start();

  }

}

​

let particles

​

function setup() {

  createCanvas(400, 400);

  particles = [];

  for(let i = 0; i < 5; i++){

    let v = createVector(random(0,width),random(0,height));

    let c =  createVector(random(0,width),random(0,height));

    let speed = random(5,10);

    let osc = new p5.SinOsc(); // set frequency and type

    let fft = new p5.FFT();

    particles.push(new Particle(v, c, speed, osc));

  }

}

​

function draw() {

  background(220);

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

    particles[i].pos.x = width/2 + Math.sin(frameCount/particles[i].speed) * 190 * random();

    particles[i].pos.y = height/2 + Math.cos(frameCount/particles[i].speed) * 190

    // sound

    let freq = map(particles[i].pos.x, 0, width, 420, 460);

    particles[i].osc.freq(freq);

    let amp = map(particles[i].pos.y, 0, height, 1, 0.01);

    particles[i].osc.amp(amp);

    // display

    circle(particles[i].pos.x,particles[i].pos.y,10);

  }

}