tassx 发表于 2009-7-31 16:55

求助：等效声压级的计算

ASTM F963
8.19.2.4 (2)Measurements of Continuous Sounds—If the toy under test has a clearly defined operating cycle, measure the equivalent sound pressure level in each microphone position during at
least one whole cycle.   

EN71
8.28.2.4.1
If the toy has a clearly defined operating cycle, measure the time average (the equivalent continuous) sound pressure level in each microphone position during at least one whole cycle.
如果被测玩具有明显的运行周期，至少在一个完整周期内测得每个麦克风的按时平均（均等连续）声压水平。


Q：一般的声音函数貌似无法得知，怎样求出等效声压级(LAeq)?
http://t.douban.com/view/photo/photo/public/p294445470.jpg

tommyxu 发表于 2009-7-31 17:03

这个关键在仪器上，有些国产的一起时没有显示LAEQ的 ，有进口的噪音仪，有直接显示LAEQ LCPK的，不过这种的价格比较高。

wjlove12 发表于 2009-7-31 23:58

买好点的仪器，这个无法算出，有的仪器上可以显示出很多数值。如楼上所说，是很贵。
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