KS I ISO 9296-2002 Acoustics－Declared noise emission values ofcomputer and business equipment《声学 计算机和办公设备噪声发射的申报值》.pdf

1、 KS I ISO 9296 KSKSKSKSSKSKSKS KSKSKS SKSKS KSKS SKS KS KS I ISO 9296: 2002(2012 ) 2002 9 25 http:/www.kats.go.krI ISO 9296： 2002 : ( ) ( ) ( ) : (http:/www.standard.go.kr) ： ：1973 12 3 ：2002 9 25 ：2012 12 29 ： 2012-0837 ： ( 02-509-7294) (http:/www.kats.go.kr). 10 5 , . I ISO 9296： 2002 i . 1 1. 1 2

2、. 2 3. 3 3.1 .3 3.1.1 (computer and business equipment)3 3.1.2 batch(lot) of machine(s).3 3.1.3 (idling mode)3 3.1.4 (operating mode)3 3.2 .3 3.2.1 A (A-weighted sound power level in decibels), LWA.3 3.2.2 A (A-Weighted emission sound pressure level in decibels)3 3.2.3 (measured value)3 3.2.4 (decla

3、red noise emission values).3 3.2.5 A (declared A-weighted sound power level in bells), LWAd.3 3.2.6 A (declared A-weighed emission sound pressure level in decibels), LpAm.4 3.3 .4 3.3.1 (standard deviation of repeatability), r4 3.3.2 (standard deviation of reproducibility), R.4 3.3.3 (standard devia

4、tion of production), P.4 3.3.4 (total standard deviation), t4 3.3.5 (reference standard deviation), M.4 4. .5 4.1 .5 4.2 A , LWA 5 4.3 ( ) A , LpA 5 4.4 5 4.4.1 A , LWAd .5 4.4.2 A , LWAd .6 4.4.3 A , LpAm .6 4.4.4 A , LpAm .6 5. .6 6. .6 6.1 .6 I ISO 9296： 2002 ii 6.2 A , LWAd .7 6.3 A , LWAd .7 A

5、() 8 B () .9 B.2 9 B.2.1 .9 B.2.2 (Impulsive noise parameter)9 B.2.3 (Prominent discrete tones)9 B.3 .9 C () .10 C.1 .10 C.2 .10 C.3 A , LWAd 10 .12 .13 ICS 35.020； 17.140.20 KS I ISO 9296： 2002(2012 ) AcousticsDeclared noise emission values of computer and business equipment 1988 1 ISO 9296, Acoust

6、ics Declared noise emission values of computer and business equipment . , C . “ ” . , , , . , , . . KS A ISO 7779 . KS A ISO 4871 A KS A ISO 7574 . A LWA . A LpA . . 1 pW , 20 Pa , (B) , (dB) . B . KS A ISO 7574 . KS A ISO 9296 A . 1. . . KS A ISO 7779 KS A ISO 4871 KS A ISO 7574 . A LWAd(KS A ISO 7

7、574 Lc I ISO 9296： 2002 2 ) A LpAm( ) . A LWAd , (1) . (1) A LWAd , A , 1 B 10 dB LWAd 10 . , , A LWAd , A LpAm . A (B) , A (dB) . . ISO/IEC Guide 21 IDT ( ), MOD ( ), NEQ ( ) . ISO 9296： 1988, Acoustics Declared noise emission values of computer and business equipment (IDT) 2. . (amendment) . . KS

8、A ISO 7779 ISO 7779： 1999, Acoustics Measurement of airborne noise emitted by information technology and telecommunication equipment . KS A ISO 4871 ISO 4871： 1996, Acoustics Declaration and verification of noise emission values of machinery and equipment . ISO 9296 ISO 4871： 1984, 1 Acoustics Noise

9、 labelling of machinery and equipment 1996 . KS A ISO 7574 1 1： ISO 7574 1 Acoustics Statistical methods for determining and verifying stated noise emission values of machinery and equipment Part 1： General considerations and definitions . KS A ISO 7574 2 2： ISO 7574 2： Acoustics Statistical methods

10、 for determining and verifying stated noise emission values of machinery and equipment Part 2： Methods for stated values for individual machines . KS A ISO 7574 4 4： (batch) ISO 7574 4： Acoustics Statistical methods for determining and verifying stated noise emission values I ISO 9296： 2002 3 of mac

11、hinery and equipment Part 4： Methods for stated values for batches of machines . 3. . , 3 . 3.1 3.1.1 (computer and business equipment) , , , 1988 (ISO 9296) “computer and business equipment” , ISO 7779 1999 , “information technology and telecommunication equipment” . ISO 7779 KS A ISO 7779 “ ” . 3.

12、1.2 batch (lot) of machine(s) . 3.1.3 (idling mode) (warming-up) KS A ISO 7779 3.1.4 (operating mode) KS A ISO 7779 . . 3.2 3.2.1 A (A-weighted sound power level in decib els), LWAKS A ISO 7779 A . 1 pW. 3.2.2 A (AWeighted emission sound pressure le vel in decibels), LpAKS A ISO 7779 , A (a). 20 Pa.

13、 (a) 1988 “sound pressure level” , ISO 4871 (emission sound pressure level) , 1999 ISO 7779 . ISO 7779 KS A ISO 7779 “ ” . 3.2.3 (measured value) KS A ISO 7779 A LWA A LpA . . 3.2.4 (declared noise emission values) A LWAd A LpAm . 3.2.5 A (declared A-weighted sound power leve l in bells), LWAd A LWA

14、 10 , . , A LWA 10 / A LWA 10 , . 6. LWAd AI ISO 9296： 2002 4 LWA 6.5 % 95 % . LWAd 0.1 (B) . LWAd KS A ISO 7574 Lc . 3.2.6 A (declared A-weighed emission sound pressure level in decibels), LpAm A LpA . A LpA (b). LpA KS A ISO 7779 , (c). 1.(b) . KS A ISO 7779 , 1 ( 4 ) , 1 . A LpAm ( ) . 2.(c)3.2.5

15、 4.4.1 4.4.2 , 3.2.6 4.4.3 4.4.4 , “LpAm 1 (dB) ” . 3.3 3.3.1 (standard deviation of repeatability) r , ( , , ) (KS A ISO 7779) . , s . 3.3.2 (standard deviation of reproducibility) R , , ( , , ) (KS A ISO 7779) . . 3.3.3 (standard deviation of production) p (family) , ( , , ) (KS A ISO 7779) 3.3.4

16、(total standard deviation) t . 2p2Rt +=(1) 3.3.5 (reference standard deviation) M . LWA M 2.0 dB . M . t M t M (4.4.1 ). I ISO 9296： 2002 5 4. 4.1 LWAd LpAm . . 4.2 A , LWA A LWA KS A ISO 7779 . . . 4.3 ( ) A , LpA A LpA KS A ISO 7779 . KS A ISO 7779 LpA . 4.4 . 4.4.1 A , LWAd A LWAd . a) (KS A ISO

17、7779) . LWA R 1.5 dB . b) , ( ) , KS A ISO 7779 . 2 . . c) R p LWA t d) 6. . KS A ISO 7574 4 1 n 3, M 2.0 dB . . KS A ISO 7779 A LWAi . LWAi LWAm . =niiWWLnL1AAm1(2) n： LWAi sp . =niWiWLLns12AmAp)(11.(3) sp s R(1.5 dB .) st . 2p2Rtsss +=.(4) 2p25.1 s+= 1. LWAm st t . 2. st . LWAm s t 0.1 (B) I ISO 9

18、296： 2002 6 LWAd . )0.2(564.05.1101ttAmAdssLLWW+=(5) ISO 7574 4 ( n 3 ) 5 % . n 3 , C ( ) . 4.4.2 A LWAd A LWA LWAd . )(101AAdKLLWW+(6) K . sR 1.5 dB, 5 % K 2.5 dB . LWAd 0.1 (B) . 4.4.3 A , LpAm 4.3 A LpA A LpAm . LpAm 1 (dB) . 4.4.4 A , LpAm A LpAm 4.3 A LpA . LpAm 1B . 5. . a) “KS A ISO 9296 ” 4.

19、 LWAd LpAm , 1 B 10 dB . b) LpAm KS A ISO 7779 c) . d) . . ( A ). 6. 6.1 A LWAd , A LpAm . LWAd KS A ISO 7574 4 , n 3, M 2.0 dB 1 . LWAd KS A ISO 7574 2 . I ISO 9296： 2002 7 KS A ISO 7779 . , 4. 5. . 6.2 A , LWAd (3.3.2 ) . (3.3.1 ) . 3 . ( ) LWA1, LWA2 LWA3 L ( ) . )(313A2A1A WWWLLLL +=(7) A LWAd .

20、 a) )11.0(10/dAWLL LWAd . b) )11.0(10/dAWLL LWAd . 6.3 A , LWAd ( ) LWA . A LWAd . a) LWA/10 LWAd LWAd . b) LWA/10 LWAd LWAd . I ISO 9296： 2002 8 A () ( ) . 1. . ： , ABC KS A ISO 9296 LWAd(1 B 10 dB) 7.1 B 7.0 B LpAm( ) 57 dB 56 dB 2. ： , DEF KS A ISO 9296 LWAd(1 B 10 dB) 5.2 B 4.8 B LpAm( ) 41 dB 37 dB ： 1981 1982 LWAd(1 B 10 dB) 5.5 B