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这里有空纸盘箱的计算,比较复杂,我看不下去。
http://wenku.baidu.com/view/d2a60b67cc7931b764ce1550.html
下面这段告诉你怎么测辐射器的Fs,无损不用拆,但是质量不知道怎么测,与Fs的关系如何?
To measure the resonance frequency of the passive radiator, install it in a free-air baffle (e.g. the box it's going in, without the driver in place), then hold a driver, driven by a sine wave generator, as close as possible to the passive radiator, then vary the frequency.
At the passive radiator's resonance frequency, you should see the greatest peak to peak excursion of the passive radiator. |
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