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各位大大,8 W/ q& I# o+ x5 m
请问一下,标准有如下叙述:
4 s: L( S% @; uFor music where the average sound pressure (long term LAeq,T) measured over the duration of
( Q S" Z; X3 u6 y. h3 E( Fthe song is lower than the average produced by the programme simulation noise, the warning
* C2 y* C1 U; W* y; q# [, edoes not need to be given as long as the average sound pressure of the song is below the
0 _2 j8 {, a- j: k0 e' Ubasic limit of 85 dBA. In this case T becomes the duration of the song.8 Y& ]4 |7 m2 o% P- d; J
9 w% g' _! O. L9 S+ ^NOTE 4 Classical music typically has an average sound pressure (long term LAeq,T) which is much lower than the average0 \' D5 x. v0 I
programme simulation noise. Therefore, if the player is capable to analyse the song and compare it with the programme" A. h4 J/ j* S4 v. i. C
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 b3 _: i# _" W2 tlimit of 85 dBA.
; q% M+ s- f6 HFor 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 l5 U2 \- o1 M/ U* c* f65 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% I5 `( j! y4 _
above the basic limit of 85 dBA.; V$ O* [) X9 L4 _1 U, r
. h( T6 E) B3 {" P7 }; ~
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。$ g: F6 R, d2 g* `) }
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