MediaStreamAudioSourceNode: MediaStreamAudioSourceNode()

new MediaStreamAudioSourceNode(context, options)

// 
const audioCtx = new (window.AudioContext || window.webkitAudioContext)();

// getUserMedia 
// MediaStreamAudioSourceNode 
if (navigator.mediaDevices.getUserMedia) {
  navigator.mediaDevices
    .getUserMedia(
      // constraints: 
      {
        audio: true,
        video: false,
      },
    )
    .then((stream) => {
      const options = {
        mediaStream: stream,
      };

      const source = new MediaStreamAudioSourceNode(audioCtx, options);
      source.connect(audioCtx.destination);
    })
    .catch((err) => {
      console.error(` gUM : ${err}`);
    });
} else {
  console.log(
    " getUserMedia ",
  );
}