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Written by Andrés Ujpán

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Tuesday • Code Sandbox
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// 🎵 Fast in-browser Web Audio Scale Synthesis
function playScale(notes = ["C", "D", "E", "F", "G"]) {
  const ctx = new AudioContext();
  notes.forEach((note, i) => {
    const osc = ctx.createOscillator();
    const gain = ctx.createGain();
    osc.frequency.setValueAtTime(
      getFreq(note), ctx.currentTime + i * 0.13
    );
    osc.connect(gain).connect(ctx.destination);
    osc.start(ctx.currentTime + i * 0.13);
    osc.stop(ctx.currentTime + (i + 1) * 0.13);
  });
}

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