hustly0415 发表于 2009-8-31 09:50

about the cut-off frequency

The cut-off frequency of an anechoic chamber is defined as the lowest frequency at which the absorption coefficient α reaches a value of α=0.99.

chenqf 发表于 2009-9-10 20:56

这是问题吗 呵呵 想表达什么呢？
页: [1]
查看完整版本: about the cut-off frequency