|
各位大大,1 w p( a2 O0 u* }- O
请问一下,标准有如下叙述:& H# ], W+ o% B/ q+ o/ r# u6 q
For music where the average sound pressure (long term LAeq,T) measured over the duration of
% |! Z4 D6 ~7 a) y- ?5 s2 u! \the song is lower than the average produced by the programme simulation noise, the warning& |2 {( K3 L* _2 e3 X
does not need to be given as long as the average sound pressure of the song is below the( z, G& ]/ ] P
basic limit of 85 dBA. In this case T becomes the duration of the song.3 ~& O/ l$ s+ B6 n1 X- f
+ y4 c6 {- }2 tNOTE 4 Classical music typically has an average sound pressure (long term LAeq,T) which is much lower than the average( h/ \' f3 j; u0 w. ?9 ~
programme simulation noise. Therefore, if the player is capable to analyse the song and compare it with the programme3 ?; E1 { v& g+ P. ^
simulation noise, the warning does not need to be given as long as the average sound pressure of the song is below the basic/ G7 X6 ~ A+ Q4 |- K3 J8 e
limit of 85 dBA.
2 }# G3 [( J' {* _) C0 yFor example, if the player is set with the programme simulation noise to 85 dBA, but the average music level of the song is only
! G- I; B. H( X6 v3 y65 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
" ^; }% h( B ?3 p) Y1 ?. u, N( oabove the basic limit of 85 dBA.
" h) D# v5 G. T" ~7 }! B* P3 o
/ k+ W6 p4 W0 t; g8 o7 F4 O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。- s- Z8 [8 }8 e |% D/ t1 r
|
|