GOST R ISO 3747-2013 Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Engineering survey methods for use in situ in a rev.pdf

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1、 3747 2013 / ISO 3747:2010 Acoustics Determination of sound| power levels and sound energy levels of noise sources using sound pressure Engineering/survey methods for use in situ in a reverberant environment (IDT) C 37472013 II 1 - ( ) , 4 2 358 3 - 05 2013 . 2178- 4 3747:2010 . . / (ISO 3747:2010,

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3、8 10 9 . 14 10 . 18 11 19 A () 20 B () 21 C () . 24 D () . 25 E () 26 A () ( ) . 38 . 39 C 37472013 IV (. 2 7), , , . ( ) -. 1. 2 7 . . , , - , - . . - . - , - . , - 12001 , - . - , - , 2, 5 17 19. 2 7 17 19 - . C 37472013 1 / Acoustics. Determination of sound power levels and sound energy levels of

4、 noise sources using sound pressure. Engineering/survey methods for use in situ in a reverberant environment 20141201 1 1.1 ( ) , , - , , , . ( ) . 1.2 (, , -, .) 12001. - . - , , . , , - , . 1.3 , , - , - (. 4.1). 12001, - (. 4.2). 1.4 - ( ) , ( ) - . , 12001 , , . 2 : 5725 ( ) ( ) - ISO 5725, Accu

5、racy (trueness and precision) of measurement methods and results 6926 . - , (ISO 6926, Acoustics Re-quirements for the performance and calibration of reference sound sources for the determination of sound power levels) C 37472013 2 12001:1996 . , . - (ISO 12001:1996, Acoustics Noise emitted by machi

6、nery and equip-ment Rules for the drafting and presentation of a noise test code) / 98-3 . 3. - (GUM) ISO/IEC Guide 98-3, Uncertainty in measurement Part 3: Guide to the expression of uncertainty in measurement (GUM:1995) 60942:2003 . (IEC 60942: 2003, Electroacous-tics Sound calibrators) 61260:1995

7、 . (IEC 61260:1995, Electroacoustics Octave-band and fractional-octave-band filters) 61672-1:2002 , . 1. (IEC 61672-1:2002, Electroacoustics Sound level meters Part 1: Specifications) - , 1 , - , , . -, , - (). -, , , , , . , , , , - 3 -. 3.1 (sound pressure) p : - . 1 22, 8-9.2. 2 (). 3.2 (sound pr

8、essure level) pL : - p 0p (0p = 20 ), () 202lg10ppLp. (1) 21, 2.2 1 , , , pAL . 2 19, 8-22. 3.3 (time-averaged sound pressure level) TpL,: T ( 1t 2t ) p 0p (0p = 20 ), () C 37472013 3 202,211lg10pdttpTLttTp. (2) 1 T , -, . 2 T - . TpAL, pAL . 3 21, ( 2.3). 3.4 (single event time-integrated sound pressure level) EL : - T ( 1t 2t ) p ( ) 0E 0E = (20 )2 = 410-102 , () , 0221lg10EdttpLttE. (3) 1 0,lg10TTLLTpE , 0T = 1 . 2 (. 18). 3.5 (measurement time interval) T : , , - . T (). 3.6 (comparison method): , , . 3.7 () (reverberant sound field): , ,