我也出现过这毛病我是这样解决的：双击右下角的小喇叭，把主音量里的Front Mic（前置麦克风）和麦克风音量的静音勾去掉，声音开大，好了！
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小喇叭在属性里面加上麦克风（front mic）在选择高级属性，1.看看是不是被静音2.
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...默许麦克风开启的是后置麦克风也就是你要到机箱前面去插，假如想用前置的需求你在声卡音量控制里设置录音为front MIC（前置麦克）。
front mic
麦克风前面
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Believe me, even the most experienced speakers get fluttery before getting in front of a mic or going on-air.
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The cord plugs in on the backside, while the boom mic can be attached the to front.
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To capture the highest quality audio, Tiki uses front-and-back facing microphone capsules that actively locate your orientation to the mic for use with multiple speakers or as you move around the room.
ENGADGET: Blue Microphones Tiki USB mic now available at Best Buy, coming to Apple stores July 15th
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