使用软件将声音从扬声器重定向到声卡上的麦克风（有许多应用程序），或者您可以使用C#创建自己的
要从chrome扩展播放声音，请使用屏幕外
manifest.json

"permissions": ["offscreen"]

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background.js

/**
 * Plays audio files from extension service workers
 * @param {string} source - path of the audio file
 * @param {number} volume - volume of the playback
 */
async function playSound(source = 'default.wav', volume = 1) {
    await createOffscreen();
    await chrome.runtime.sendMessage({ play: { source, volume } });
}

// Create the offscreen document if it doesn't already exist
async function createOffscreen() {
    if (await chrome.offscreen.hasDocument()) return;
    await chrome.offscreen.createDocument({
        url: 'offscreen.html',
        reasons: ['AUDIO_PLAYBACK'],
        justification: 'testing' // details for using the API
    });
}

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offscreen.html

<script src="offscreen.js"></script>
offscreen.js

// Listen for messages from the extension
chrome.runtime.onMessage.addListener(msg => {
    if ('play' in msg) playAudio(msg.play);
});

// Play sound with access to DOM APIs
function playAudio({ source, volume }) {
    const audio = new Audio(source);
    audio.volume = volume;
    audio.play();
}

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