GOST R ISO 17497-1-2011 Acoustics Sound-scattering properties of surfaces Part 1 Measurement of the random-incidence scattering coefficient in a reverberation room《声学 面声散射特性 第1部分 混.pdf

1、 17497-12011 1 ISO 17497-1:2004Acoustics Sound-scattering properties of surfaces Part 1:Measurement of the random-incidence scattering coefficient in a reverberation room(IDT) 27 2002 . 184- , 1.02004 . 1 - ( ) , 42 358 3 - 24 2011 . 593-4 17497-1:2004 . - . 1. (ISO 17497-1:2004Acoustics Sound-scatt

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3、ustics. Sound-scattering properties of surfaces. Part 1.Measurement of the random-incidence scattering coefficient in a reverberation room 201212011 . - . , - . . - .2 . - , . 354 . (ISO 354,Acoustics Measurement of sound absorption in a reverberation room) 9613-1 . . 1. - (ISO 9613-1, Acoustics Att

4、enuation of sound during propagationoutdoors Part 1: Calculation of the absorption of sound by the atmosphere)3 354, - :3.1 (specular reflection): , . , - .3.2 (diffuse sound field): , , .3.3 sc113(scattering coefficient): , - .1 17497-12011 sc113 0 1, 0 - , 1 . c113 . - .3.4 s (random-incidence sca

5、ttering coefficient):, - .3.5 c97s(random-incidence absorptioncoefficient):, .3.6 c97spec(random-incidence specular absorption coefficient): , - - . , , . c97spec c97s 1.3.7 1:N (physical scale ratio): - . -., ,- , N , .4 - . 1 , .p , ; t, 1 , , . . . .2 17497-12011 - () , - . . -. , , , . , (. 1),

6、n - .5 1/3- 1005000.1:N, N x 100 N x 5000 .1 , -, , - 1:N.2 , (. 6.1.3).6 6.1 6.1.1 354. - ; . . - . , , . (.7.4).,- , .6.1.2 V,3, V c179200c180N3.6.1.3 1, -, 1c1630,30c180V2/3. , 6.3.1, : 1/S 1).6.3.3 . . . , D/8, D .6.4 c97s= 0,5. , , . - (. ), , .7 7.1 ( ), - . . - , ( ). , , , -, , 354.7.2 354., 354, - N.7.3 354 - , 1 2. , - , . . . . . - . , 5 1 1 12 .