Generate vibration from audio file

turnMusicIntoVibrate.js

function turnMusicIntoVibrate(audioUrl) {
  // Create an audio context
  const audioContext = new AudioContext();

  // Create an analyser node
  const analyser = audioContext.createAnalyser();
  analyser.fftSize = 8192;

  // Load the audio file using fetch
  fetch(audioUrl)
    .then(response => response.arrayBuffer())
    .then(arrayBuffer => audioContext.decodeAudioData(arrayBuffer))
    .then(audioBuffer => {
      // Create a source node from the audio buffer
      const source = audioContext.createBufferSource();
      source.buffer = audioBuffer;

      // Connect the source node to the analyser node
      source.connect(analyser);

      // Connect the analyser node to the destination
      analyser.connect(audioContext.destination);

      // Start the audio playback
      source.start();

      // Add an ended event listener to the source node
      source.onended = function() {
        // Get the frequency data from the analyser node
        const frequencyData = new Uint8Array(analyser.frequencyBinCount);
        // Use the Navigator.vibrate() method to play the vibrate pattern
        navigator.vibrate(frequencyData);
      };
    });
}