以下是引用一个老兵在2008-07-10 16:53:20的发言：
Yes,that is right.
In acoustics, with the wavelenth>>lenth of object, sound is following the "惠更斯原理".
In fact, there is so called piston radiation in the theory.
Some of friends here studied the related theory in the university.
The textbook is a very famous one which is <Fundemental of Acoustics>, but it is in Chinese.
There are some books in English. For instance,
Sound System Engineering (Hardcover)
by Don Davis (Author), Eugene Patronis (Author) is a good book, I think.
Patronis wrote a lot about the sound radiation.
Great! I appreciate your explanation and help. It makes me clear and my understanding more comfortable.
I will try to get those books.
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Post By：2008-7-10 11:34:18 [显示全部帖子]
what is the meaning of the variable "k" in the following equation?
此主题相关图片如下：analogy23.jpg