1、 12354-62012 6 EN 12354-6:2004Building acoustics Estimation of acoustic performance of buildings fromthe performance of elements Part 6: Sound absorption in enclosed spaces(IDT) 1 - ( ) - , 42 358 3 - 29 2012 . 1385-4 12354-6:2004 . . 6. (EN 12354-6:2004 Building acoustics Estimation ofacoustic perf
2、ormance of buildings from the performance of elements Part 6: Sound absorption in enclosedspaces). - 1.5 ( 3.5). - - , 5 1.02012 ( 8). ( 1 ) , -.() - . , - (gost.ru) , 2014 , - - II EH 12354-620121 .12 13 14 24.1 24.2 34.3 34.4 .44.5 .54.6 .55 5 () 6 B () .9 () 12 D () / - 13 () 18 () - ( ) 1920III
3、EH 12354-62012 6 Building acoustics. Estimation of acoustic performance of buildings from the performance of elements. Part 6. Soundabsorption in enclosed spaces 201312011 - . -,. , , . . , , , , - . - , , .2 . - , . 354 . (EN ISO 354, Acoustics Measurement of sound absorption in a reverberation roo
4、m) 9613-1 . . 1. - (ISO 9613-1, Acoustics Attenuation of sound during propagationoutdoors Part 1: Calculation of the absorption of sound by the atmosphere)3 .3.1 3.1.1 (acoustic performances of a room): - 10. - ( ).3.1.2 (equivalent sound absorption areaofa room) A, 2: , -1 12354-62012 , .3.1.3 (rev
5、erberation time) T, : , 60 . 1 , 60 , 60 . 2 , , , 5 25. 60 T20.3.2 3.2.1 (acoustic performances of an element): - , - 354. 1 ( ). 2 , c97W(M), - 7. - , .3.2.2 (equivalent sound absorption area of anobject) Aobj, 2: - ( ).3.2.3 (sound absorption coefficient) c97s: - . 1 , , - . 2 , .3.2.4 :- ;- ;- ,
6、 ;- , .3.3 3.3.1 (absorptionbyair) Aair, 2: -, .3.3.2 (empty room volume) V, 3: .3.3.3 (object volume) Vobj, 3: , , .3.3.4 (object fraction) c121: .3.3.5 (object array): , c97s, , - .4 4.1 - . , -2 EH 12354-62012 (. 4.6), . . , , , . 1 , - D. , , , , , , . . - 125 4000 . 2 . - , , . , , .4.2 ,- :- c
7、97s,i i;- Si i;- Aobj,j j;- c97s,k k;- Sk k;-V ;-Vobj,j j Vobj,k k. , , - . , , . - . . - . - . . .4.3 = c97inc61c2291s,ic215Si+ Ajoc61c2291obj,j+ c97kpc61c2291s,kc215Sk+ Aair,(1) n i;o j;p k. -Aair=4mV(1 c121), (2) m , /;V , 3;c121 .3 EH 12354-62012 c121 =VVVobj j obj kkpjo,c43c61c61c229c22911.(3) 9613-1 , - . - , 9613-1, 1. - 9613-1. , - 20 C 50 % 70 %. 1000 , - 200 3, , (1) Aair=0. , , , , . Aobj=Vobj23/,(4) Vobj . - , , , - .4.4 , - 4.3, -
