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 asdBA,adjusts the low and high frequency levels to more closely approximate the human ear’s response t

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英语翻译Decibels,abbreviateddB,arealogarithmicunitforexpressingsoundpowerandsoundpressurelevels.A-weight

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 asdBA,adjusts the low and high frequency levels to more closely approximate the human ear’s response t
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:

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 asdBA,adjusts the low and high frequency levels to more closely approximate the human ear’s response t
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

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 asdBA,adjusts the low and high frequency levels to more closely approximate the human ear’s response t MAtlab的一段程序希望有人解答.help cheby1CHEBY1 Chebyshev Type I digital and analogfilter design.[B,A] = CHEBY1(N,R,Wp) designs an Nth order lowpass digital Chebyshevfilter with R decibels of peak-to-peak ripple in the passband.CHEBY1return 英语阅读.高手帮忙连接（3-1）文章：51.For them,noise was merely a disturbance.A.only B.only … and nothing else C.not D.not only52.…that roar day and night up to 90 or 100 decibels.A.as loud as B.louder than C.higher than D.go up53.I Scientists who study___noise say that____average noise level in New York is 72.5 decibels(分贝）A./;the B./;an C.the;an D.the;the我老是搞不清是an average of还是the average of还是什么的?把有关average的主要词组告诉我,要准英语翻译英语翻译英语翻译英语翻译英语翻译英语翻译英语翻译英语翻译英语翻译英语翻译英语翻译英语翻译英语翻译英语翻译