Hackathon TPAC2024 Carlos Jeurissen


    // create an audioContext instance
    const audioCtx = new AudioContext();

    // define oscillator
    const oscillator = audioCtx.createOscillator();
    oscillator.type = "square";

    // connect to audioContext instance
    oscillator.connect(audioCtx.destination);

    let playbackIndex = 0;

    const frequencyDurationMap = [
      650, 1.5,
      350, 1.5,
      700, 1,
      400, 1,
      700, 1,
      400, 1,
      500, 1,
    ];

    function playNext () {
      const frequency = frequencyDurationMap[playbackIndex];
      if (!frequency) {
        oscillator.stop();
        return;
      }

      console.log(frequency);

      // set frequency of oscillator
      oscillator.frequency.value = frequency;

      if (playbackIndex === 0) {
        oscillator.start();
      }

      const durationInSeconds = frequencyDurationMap[playbackIndex + 1];
      const duration = durationInSeconds * 1e3;
      playbackIndex += 2;
      setTimeout(playNext, duration);
    }