1、2014 1 ISO 3743-1:2010Acoustics Determination of sound power levels and sound energy levels of noise sources using sound pressure Engineering methods for small movable sources in reverberant fields Part 1: Comparison method for a hard-wall test room(IDT) 3743-1 2013 3743-12013II1 - ( ) , 42 358 3 -
2、05 2013 . 2176-4 3743-1:2010 . . - . 1. (ISO 3743-1:2010, Acoustics Determination of sound power levels and sound energy levels of noise sour-ces using sound pressure Engineering methods for small movable sources in reverberant fields Part 1: Comparison method for a hard-wall test room). - - , - 5 5
3、1400 99 1.02012 ( 8). - ( 1 - ) , -. () - . , - (gost.ru) , 2014 , - - 3743-12013III1 12 13 .24 . . . . . . . . . . . . . . . . . . . . . . . . . .55 66 , .77 88 .109 .1410 .1711 18 A () 19 B () 20 C () 21 A () ( ) 28 29 3743-12013IV (. 1 7), - , , - . ( ) . 1. 1 7 . - , ., , - , . . , . , . - , 7.
4、12001. , , , 2, 15 17. (2 7) 15, 17 - . 3743-12013 1 201412011 1.1 ( ) , - , , , -, . - ( ) .1.2 (, , -, .) 12001. , . - (. 4.2).1.3 , , , - (. 4.3).1.4 ( ) . 12001 .2 : 5725 ( ) ( ) - ISO 5725, Accuracy (trueness and precision) of measurement methods and results 6926 . - , (ISO 6926, Acoustics Requ
5、ire- 1 Acoustics. Determination of sound power levels and sound energy levels of noise sources using sound pressure. Engineering methods for small movable sources in reverberant fields. Part 1. Comparison method for a hard-wall test room 3743-120132ments for the performance and calibration of refere
6、nce sound sources for the determination of sound power levels) 12001:1996 . , . (ISO 12001:1996, Acoustics Noise emitted by machinery and equipment 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 ex
7、pression of uncertainty in measurement (GUM:1995) 60942:2003 . (IEC 60942: 2003, Electroacous-tics Sound calibrators) 61260:1995 . (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: Spe
8、cifications)3 .3.1 (sound pressure) p: - . 1 19, 8-9.2. 2 ().3.2 (sound pressure level) Lp: p p0( p020= ), () Lppp=10202lg . (1)8, 2.2 1 , , , LpA . 2 19, 8-22.3.3 (time-averaged sound pressure level) LpT,: - T ( t1 t2) p p0(p020= ), () LpTTpttptt,lg=()10120212d. (2) 1 T , , . 2 T - . LpAT, LpA. 3 1
9、8, ( 2.3). 3743-1201333.4 (single event time-integrated sound pressure level) LE: T ( t1 t2) p ( ) E0 E0210 220 410= ()= , () LEpttEtt=()102012lgd. (3) 1 LLEpTTT=+,lg100, T01= . 2 (. 18).3.5 (measurement time interval) T: , , . T ().3.6 (comparison method): - , - , .3.7 (hard-walled test room): , ( ) .3.8 () (reverberant sound field): - , , , .3.9 (sound absorption coefficient) a: - .3.10 (reference sound source): , - . , - , 6926:1999 ( 5).3.11 (frequency range of interest): , , - () 125 8000 . -, . 63 , - 8000 . .3.12 (reference box): -
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