let amp;       // Amplitude analyzer

​

function preload() {

  // Load the audio file in the preload function

  song = loadSound('morse.mp3'); // Replace with the path to your audio file

}

​

function setup() {

  createCanvas(windowWidth, windowHeight);

  noStroke();

  // amplitude analyzer with the morse code music

  amp = new p5.Amplitude();

  amp.setInput(song);

  // Play Button

  let playButton = createButton('Play');

  playButton.mousePressed(togglePlay);

}

​

function draw() {

  background(0);

  // sensitivity levels

  let vol = amp.getLevel() * 0.5; 

  // radius of the gradient changes according to amplitude

  let radius = map(vol, 0, 0.3, 100, width);

​

  // reaction

  drawRadialGradient(width / 2, height / 2, radius);

}

​

function drawRadialGradient(x, y, radius) {

  let innerColor = color(0, 77, 102); // Green

  let outerColor = color(0, 229, 80); // Blue

  for (let r = radius; r > 0; r--) {

    let inter = map(r, 0, radius, 0, 1);

    let c = lerpColor(outerColor, innerColor, inter);

    fill(c);

    ellipse(x, y, r * 2, r * 2);

  }

}

​

function togglePlay() {

  if (song.isPlaying()) {

    song.pause(); // If the song is playing, pause it

  } else {

    song.play();  // If the song is paused, play it

  }

}

​

function windowResized() {

  resizeCanvas(windowWidth, windowHeight);

}

​