function play(mybuffer) {
  const sourceNode = context.createBufferSource();
  sourceNode.buffer = mybuffer;

  const delayNode = context.createDelay();
  delayNode.delayTime.value = 0.3;

  const volumeNode = context.createGain();
  volumeNode.gain.value = 0.2;

  sourceNode.connect(delayNode);
  delayNode.connect(volumeNode);
  volumeNode.connect(context.destination);
  sourceNode.connect(context.destination);
  sourceNode.start(0);
}