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各位大大,
+ c, K G* \/ W( g9 z 请问一下,标准有如下叙述:
, ~- n/ W4 _7 P# {) IFor music where the average sound pressure (long term LAeq,T) measured over the duration of
& |" {4 W* ^. O+ G) K- I, zthe song is lower than the average produced by the programme simulation noise, the warning0 ^5 k8 V& ~. C; W) K: ?! G t
does not need to be given as long as the average sound pressure of the song is below the/ \9 s& \5 S% T2 C9 I1 D) Z# u- A
basic limit of 85 dBA. In this case T becomes the duration of the song.$ G0 t8 x1 e. Y; X. q
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NOTE 4 Classical music typically has an average sound pressure (long term LAeq,T) which is much lower than the average) }' H# H9 ~9 v
programme simulation noise. Therefore, if the player is capable to analyse the song and compare it with the programme
* h* n% w7 d& ]& g( X4 k" f* Zsimulation noise, the warning does not need to be given as long as the average sound pressure of the song is below the basic
4 t. v+ W; Y0 Plimit of 85 dBA.
7 x. @7 N3 X# cFor example, if the player is set with the programme simulation noise to 85 dBA, but the average music level of the song is only# h# r( C! J, d4 u" S+ `6 o
65 dBA, there is no need to give a warning or ask an acknowledgement as long as the average sound level of the song is not+ \7 u/ }9 y9 h* O! N) Z+ H
above the basic limit of 85 dBA.
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: U S7 \. _2 o4 F9 e这里面 描述了 采用标准噪声测试时,超出限制。我们应该用什么样的音乐来测试(古典、流行、摇滚?)。还有上面标红的句子里面说到的对比是怎么样对比的。
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