Button A: setting button. Press button A for normal use mode. At this time, only the first indicator keeps on and the air mouse functions and wireless remote controller functions are available.

A 键：设置键，按一下A键正常使用模式，此时只有第一个是指示灯常亮，有空中鼠标功能和无线遥控器功能。

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Firstly, the ray method and normal mode method are used to calculate the acoustic field in underwater with the source in the air.

首先，用射线方法和简正波方法对空气中的声源在水下产生的声场进行了分析。

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