ktcy

function createSilence(seconds = 1) {
  const sampleRate = 8000;
  const numChannels = 1;
  const bitsPerSample = 8;

  const blockAlign = numChannels * bitsPerSample / 8;
  const byteRate = sampleRate * blockAlign;
  const dataSize = Math.ceil(seconds * sampleRate) * blockAlign;
  const chunkSize = 36 + dataSize;
  const byteLength = 8 + chunkSize;