当你在房间里移动的时候，声音的音量会上升或下降，这取决于你在这些驻波中的位置。

As you move around the chamber, the volume of the sound goes way up and way down, depending on where you are in these standing waves.

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控制录制声音和播放声音的音量。

Controls the volume level of recorded and play-back sounds.

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不过，这里也要小心处理声音的大小，要确保反馈声音的音量不能太大或者产生干扰。

However, care needs to be taken to ensure that this feedback is itself not too loud or distracting.

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