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各位大大,3 ?+ T6 @+ ?5 v$ O: L
请问一下,标准有如下叙述:1 P7 i5 q: w! h
For music where the average sound pressure (long term LAeq,T) measured over the duration of
- g* L8 q/ X! g) f7 nthe song is lower than the average produced by the programme simulation noise, the warning
% C$ p% g y. |& m- Q+ O9 ndoes not need to be given as long as the average sound pressure of the song is below the
- v# ?) a% h9 c5 Q; ?. n. nbasic limit of 85 dBA. In this case T becomes the duration of the song.# Z; e N5 w. z! |$ P# i9 h
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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- t, B) `7 m! v; U( R( g
programme simulation noise. Therefore, if the player is capable to analyse the song and compare it with the programme# ^6 S8 j4 D- a) k
simulation noise, the warning does not need to be given as long as the average sound pressure of the song is below the basic# {% g5 x9 g( O& X) ]9 D
limit of 85 dBA.4 N0 p/ I8 u) n+ g
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
9 C3 s g. F( b4 c2 E65 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
W0 E; ]$ O9 s, j: y( zabove the basic limit of 85 dBA.* `3 C# A; O: e$ X& s1 C
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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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