大师作文网英语翻译Decibels,abbreviated dB,are a logarithmic unit for expre
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英语翻译
Decibels,abbreviated dB,are a logarithmic unit for expressing sound power and sound pressure levels.A-weighting this unit,referred to as
dBA,adjusts the low and high frequency levels to more closely approximate the human ear’s response to noise.This scale is based on a child’s
hearing.
To convert dB to dBA,simply subtract the following corrections for each frequency using the following table:
Decibels,abbreviated dB,are a logarithmic unit for expressing sound power and sound pressure levels.A-weighting this unit,referred to as
dBA,adjusts the low and high frequency levels to more closely approximate the human ear’s response to noise.This scale is based on a child’s
hearing.
To convert dB to dBA,simply subtract the following corrections for each frequency using the following table:
A是指计权网络A,计权网络总共分A、B、C个等级,通常用的是A,也就是说,在A计权网络下测得的声音的分贝
翻译：分贝,缩写为dB,是表示声音强度和声压的对数单位,A计权这个单位,简写为dBA,用来调整低频段和高频段的声音,使之与人耳的听觉特性较接近.这个评判标准是基于一个小孩子的听力来定的.
要将 dB转化为dBA,只需要根据下表减去修正值就可以了
翻译：分贝,缩写为dB,是表示声音强度和声压的对数单位,A计权这个单位,简写为dBA,用来调整低频段和高频段的声音,使之与人耳的听觉特性较接近.这个评判标准是基于一个小孩子的听力来定的.
要将 dB转化为dBA,只需要根据下表减去修正值就可以了
英语翻译Decibels,abbreviated dB,are a logarithmic unit for expre
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