使用网络音频API检查选定的麦克风是否已静音 [英] Check if selected microphone is muted or not with web audio api

问题描述

通过使用以下内容，我们可以提示用户选择受音频和视频源限制的首选媒体输入设备(当前仅对Chrome支持感兴趣).

By using the following, we can prompt the user to select their preferred media input device with audio and video source constraints (currently only interested in Chrome support).

navigator.mediaDevices.getUserMedia({audio: true})
  .then((stream) => {
    console.log(stream);
  });

任何人都知道是否有公开的API可以检测用户选择的输入设备当前是否处于静音状态吗?输入设备可以是板载麦克风，外部麦克风，也可以是在系统中显示为硬件设备的软件定义的麦克风.

Anyone know if there is an exposed API to detect if the user-selected input device is currently muted or not? The input device would be either an onboard microphone, external mic, or software defined microphone that shows in the system as a hardware device.

推荐答案

您可以通过迭代MediaStream返回的数组来检查每个MediaStreamTrack的属性.muted Boolean值

You can check property .muted Boolean value of each MediaStreamTrack by iterating the array returned by MediaStream .getAudioTracks() method, or by selecting the MediaStreamTrack by index from the array.

  navigator.mediaDevices.getUserMedia({audio: true})
  .then(stream => {
    console.log("MediaStreamTrack muted:", stream.getAudioTracks()[0].muted);
  })
  .catch(err => console.log(err));

您还可以利用mute和unmute MediaStreamTrack事件.

You can also utilize mute and unmute MediaStreamTrack events.

这篇关于使用网络音频API检查选定的麦克风是否已静音的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！