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各位大大,1 n# z* Q2 Q, j6 Z
请问一下,标准有如下叙述:! } C9 [2 b6 r4 ? E" R
For music where the average sound pressure (long term LAeq,T) measured over the duration of/ e E$ i. M) L2 x4 B) n) p
the song is lower than the average produced by the programme simulation noise, the warning y* w5 i3 B# r4 j$ x) ]
does not need to be given as long as the average sound pressure of the song is below the1 e0 I$ P) f/ q& M2 [2 s/ S
basic limit of 85 dBA. In this case T becomes the duration of the song.; V4 V- Z2 B N0 }% [- z
: `6 V7 o( q% j9 w4 [
NOTE 4 Classical music typically has an average sound pressure (long term LAeq,T) which is much lower than the average
' a2 f8 P* P9 [" B1 v. yprogramme simulation noise. Therefore, if the player is capable to analyse the song and compare it with the programme ~+ [& J G" Q2 l- ~ E' L+ @
simulation noise, the warning does not need to be given as long as the average sound pressure of the song is below the basic
% q) F# g2 j+ k; i. B2 `& Nlimit of 85 dBA.
" ~$ m7 U: s& j: x" g! F4 |For example, if the player is set with the programme simulation noise to 85 dBA, but the average music level of the song is only
. b# w6 z3 L3 ?' E6 w5 t7 w65 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: [( f8 _! w% G
above the basic limit of 85 dBA.
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* k5 z0 P7 E) e9 }' E$ w# v4 E& z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。, W3 t0 g0 L% g8 T1 d' i
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