p5*js loadSound

https://yarogniew.github.io/Sound_testowy/

var song;
var sliderVolume;
var sliderRate;
var sliderPan;

function setup() {
  createCanvas(200, 200);
  song = loadSound("szumy.mp3", loaded);

  sliderVolume = createSlider(0, 1, 0.5, 0.01);
  sliderVolume.position(20, 20);
  sliderRate = createSlider(0, 3, 1, 0.01);
  sliderRate.position(20, 50);
  sliderPan = createSlider(-1, 1, 0, 0.01);
  sliderPan.position(20, 80);
}

function loaded(){
song.play();
}

function draw(){
background(random(100,120));
// console.log(slider.value());
song.setVolume(sliderVolume.value());
song.rate(sliderRate.value());
song.pan(sliderPan.value());

}