请问诸位计算声强指向性时，active和reactive values是什么意思

爱神爱生活

请问诸位计算声强指向性时，active和reactive values是什么意思？先多谢了。

superxjw

The 2D displays of acoustic power allow you to visualize it in three different ways as explained below:

Total Values – It contains both the Active Part and the Reactive Part of the acoustic power, stored as a complex number i.e. Total Values = Complex (Active Value, Reactive Value).
Active Part - It contains only the Active Part of the acoustic power, stored as a complex number i.e. Active Part = Complex (Active Value, 0).
Reactive Part - It contains only the Reactive Part of the acoustic power, stored as the real part of a complex number i.e. Reactive Part = Complex (Reactive Value, 0).
The reason why the 3 formats are offered in the displays is because you would typically want to view them in dB format.

Moving the Active Power and Reactive Power in separate curves is the only way to also view them separately in dB's.

爱神爱生活

superxjw 发表于 2013-10-27 16:39

                               
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The 2D displays of acoustic power allow you to visualize it in three different ways as explained bel ...

再请教下主任，声入射时，Reactive Parts 是指结构产生的声波辐射部分吗？Active Parts 是入射声波与结构产生辐射声波的叠加的意思吗？

song0404

爱神爱生活 发表于 2013-10-29 21:33

                               
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再请教下主任，声入射时，Reactive Parts 是指结构产生的声波辐射部分吗？Active Parts 是入射声波与结构 ...

active是实部，reactive是虚部