The voltage in the signal varies in direct proportion to the sound wave.
信号中的电压按声波比例变化。
The first wave that hits our ears is the direct sound which has travelled directly from the source to the listener.
两耳时间差异：当一个声波撞击一个人的头，需要不同的时间到达听者的左和右耳朵。
The first wave that hits our ears is the direct sound which has travelled directly from the source to the listener.
动画声音的来源 如果你想命令听众的注意力，但是一个声源的视图，您可以动画声音的位置。
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