gistfile1.txt

const sampleRate = 44100;
const sineWaveArray = new Float32Array(sampleRate);
const hz = 440;

for (i = 0; i < sineWaveArray.length; i++) {
  sineWaveArray[i] = Math.sin(i * Math.PI * 8 / hz);
}

function playSound({ array, sampleRate }) {
  const audioContext = new AudioContext({sampleRate});
  const audioBuffer = audioContext.createBuffer(1, array.length, sampleRate);
  audioBuffer.copyToChannel(array, 0);
  const source = audioContext.createBufferSource();
  source.connect(audioContext.destination);
  source.buffer = audioBuffer;
  source.start();
}

function playSineWave440hz() {
  playSound({ array: sineWaveArray, sampleRate });
}