|
各位大大,
4 R Z2 f% q5 [+ Z3 ]$ T, n9 I 请问一下,标准有如下叙述:
2 k z- M9 ~- CFor music where the average sound pressure (long term LAeq,T) measured over the duration of; x5 I3 a6 j' v& J l) j w: n
the song is lower than the average produced by the programme simulation noise, the warning
7 A/ [9 k% b$ w9 B# P, |( \ Adoes not need to be given as long as the average sound pressure of the song is below the( Z' {, H' K1 @+ m
basic limit of 85 dBA. In this case T becomes the duration of the song.
" c. q- t* ]+ R* k0 ?
* b: n" ~* F5 L, P9 x! _6 VNOTE 4 Classical music typically has an average sound pressure (long term LAeq,T) which is much lower than the average1 o! t; |' F4 m9 l. c
programme simulation noise. Therefore, if the player is capable to analyse the song and compare it with the programme2 w( K( e$ R1 V. y% F5 x2 V' u
simulation noise, the warning does not need to be given as long as the average sound pressure of the song is below the basic
9 _/ l: L9 U! ilimit of 85 dBA.
6 [! i2 d' V: I& t! @( Z- tFor example, if the player is set with the programme simulation noise to 85 dBA, but the average music level of the song is only* U& Q/ [* Z7 Q5 V4 _
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/ O) w" Z1 Q6 {
above the basic limit of 85 dBA./ |2 C# C; v2 I: @) O! H) m* q( b
6 _/ J: f! F% |, v5 D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。7 m4 y# U$ \0 `: E! g
|
|