1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS A ISO 80000 8 8： KS A ISO 80000 8:2011 2011 12 9 http:/www.kats.go.kr KS A ISO 80000 8:2011 : ( ) ( ) ( ) : (http:/www.standard.go.kr) ： ：2010 7 9 ：2011 12 9 2011-0561 ： ： ( 02-509-7294) (http:/www.kats.go.kr). 10 5 , . KS A ISO 80000 8:2011 i . ii 1 1 2
2、1 3 , .1 KS A ISO 80000 8:2011 ii 2007 1 ISO 80000 8, Quantities and units Part 8 : Acoustics . 0.1 , . . ISO 31 7 ISO 31 7 . ISO 31 7 ( ) . 0.2 . . (ISQ) . , , (tensor) . , . , . ( , ； ； a a； g ) , . . . . , , fr . (m), (f) . 0.3 0.3.1 . , . BIPM SI Brochure (2006 8 ) ISO 80000 1 . . a) SI . SI (CG
3、PM) . SI . SI , SI KS A ISO 80000 8:2011 iii 10 . b) , SI , SI (CIPM), (OIML), ISO IEC . SI SI . c) SI CIPM SI “ ” ( ) . d) SI SI . (informative) , . . 1) CGS 2) e) , . 0.3.2 1 1, , 1, 1 . , 1 . 1 n 1.531 1.53 10 . 10 . 2 Re 1.32103 , , (CGPM) 1995 (rad) (sr) . 1 . . . 0.4 “ ” . “ ” , : “ ” . . . ,
4、 l 2.347 82(32) m l a(b) m , b l a ( ) . b a ( ) . l(l ) 2.347 82 , 0.000 32 m l KS A ISO 80000 8:2011 iv , l (2.347 82 0.000 32) m (2.347 82 0.000 32) m . 0.5 0.5.1 “ ” (system) , (superimposed) . “eff” . 0.5.2 . . (calculus) , . . (dB) . KS A ISO 80000 8 . KS A ISO 80000 3 3-21 3-22 . KS A ISO 80
5、000 8:2011 8： Quantities and units Part 8： Acoustics 1 KS A ISO 80000 8 , . . 2 . . ( ) . KS A ISO 80000 3： 2010, 3： KS A ISO 80000 4： 2010, 4： KS C IEC 60027 1, 1： KS C IEC 61672 1, ( ) 1： KS I ISO 16, ( ) 3 , , . KS A ISO 80000 8:2011 2 8-1 (7-1) (period duration, period) T 1 KS A ISO 80000 3:2010
6、 3-12 . 8-2 (7-2) , (frequency) f, () f 1/T T ( 8-1) . ( ) , KS I ISO 16 . KS A ISO 80000 3:2010 3-15.1 . 8-3 (7-3) (logarithmic frequency interval) G G lb(f2/f1) f1 f2 f1 ( 8-2) . lb(f2/f1) log2(f2/f1) 8-4 (7-4) (angular frequency) 2f f ( 8-2) . KS I ISO 80000 3:2010 3-16 . 8-5 (7-5) (wavelength) ,
7、 ( 8-25.2 ) 2 KS A ISO 80000 3:2010 3-17 . 8-6 (7-6) (wavenumber, repetency) 1/ ( 8-5) . 8-7 (7-7) (angular wavenumber, angular repetency) k k /c 2/ ( 8-4) , c ( 8-14.1) , 2 , ( 8-5) . 8-7 k . . 8-8 (7-8) (density, mass density) m/V m (KS A ISO 80000 4:2010 4-1) V (KS A ISO 80000 3:2010 3-4) . KS A
8、ISO 80000 8:2011 3 8-1.a s 8-2.a Hz 1 Hz： 1 s 1 1 Hz , 1 . 8-3.a 8-3.b oct dec 1 oct : lb 2 1 1 dec : lb 10 (lb 10) oct 3.32 oct 3.32 1 oct f2/f1 2 , f1 f2 . 1 dec f2/f1 10 , f1 f2 . 8-4.a 8-4.b rad/s s 1 8-5.a m 8-6.a m 1 8-7.a 8-7.b rad/m m 1 8-8.a kg/m3 KS A ISO 80000 8:2011 4 8-9.1 (7-9.1) (stat
9、ic pressure) ps 8-9.2 (7-9.2) (sound pressure) p 8-10 (7-10) (sound particle displacement) (, , ) 8-11 (7-11) (sound particle velocity) , u (u, , w) t= ( 8-10) t . 8-12 (7-12) (sound particle acceleration) a ta = ( 8-11) , t . 8-13 (7-13) , (sound volume velocity, sound volume flow rate) q, (qV) ( )
10、 ( 8-11) 8-9.2 8-13 (r.m.s.) . KS C IEC 60027 1 8-14.1 (7-14.1) (phase speed of sound) c kc= ( f ) ( 8-4) k ( 8-7) . . 8-14.2 (7-14.1) (group speed of sound) cg kc ddg= ( 8-4) k ( 8-7) . . KS A ISO 80000 8:2011 5 8-9.a Pa 8-10.a m 8-11.a m/s 8-12.a m/s2 8-13.a m3/s 8-14.a m/s KS A ISO 80000 8:2011 6
11、 8-15 (7-15) (sound energy density) w 8-16 (7-16) (sound power) P, Pa , p( 8-9.2) ( 8-11) un (product) ( 8-16.2) 8-17.1 (7-17) (sound intensity) i i p p ( 8-9.2) ( 8-11) . (束) (energy flux density) . 8-17.2 () (time-averaged sound intensity) I =21d)(112ttttittI t1 t2 i ( 8-17.1) . 8-18 () (sound exp
12、osure) E = 21d2ttf tpE t1 t2 pf ( 8-9.2) . , p2f (band, 帶域) . KS C IEC 61672 1 E . 8-19 (7-20.2) (characteristic impedance of a medium) Zc (non-dissipative) , , ( 8-9.2) ( 8-11) Zc c ( 8-8) c ( 8-14.1) . KS A ISO 80000 8:2011 7 8-15.a J/m3 8-16.a W 8-17.a W/m2 8-18.a Pa2 s 8-19.a Pa s/m KS A ISO 800
13、00 8:2011 8 8-20 (7-18) (acoustic impedance) Za , ( 8-9.2) ( 8-13) 8-21 (7-19) (mechanical surface impedance) Zm , ( 8-11) Zm Za A2 A Za ( 8-20) . 8-22 (7-21) (sound pressure level) Lp dBlg10 202ppL ftp = pft ( 8-9.2) p0 20 Pa . , p2ft , , . KS C IEC 61672 1 , , , . KS A ISO 80000 3:2010 3-21 . . 8-
14、23 (7-22) (sound power level) LW dBlg100PPLW = P ( 8-16) P0 1 pW . KS A ISO 80000 3:2010 3-22 . 8-24 () (sound exposure level) LE dBlg100EELE = E ( 8-18) E0 400 Pa2 s . KS C IEC 61672 1 , . KS A ISO 80000 8:2011 9 8-20.a Pa s/m3 8-21.a N s/m 8-22.a B 1 B 10/ 0 =pp . B dB . dB(A) . LA . 8-23.a B 1 B
15、P/P0 10 . B dB . 8-24.a B 1 B E/E0 10 . B dB . KS A ISO 80000 8:2011 10 8-25.1 (7-26.1) (attenuation coefficient) x , . F(x) Ae x cos(x x0) 1/ . m 2 . 8-26.4 m/2 . 8-25.2 (7-26.2) (phase coefficient) (x x0) . 8-25.3 (7-26.3) (propagation coefficient) j j . 8-26.1 (7-27.1) , (dissipation factor for s
16、ound power) , 8-26.2 (7-27.2) , (reflection factor for sound power) r, () 8-26.3 (7-27.3) , (transmission factor for sound power) r 1 8-26.4 (7-27.4) , (absorption factor for sound power) KS A ISO 80000 8:2011 11 8-25.a m 1 8-26.a 1 0.3.2 KS A ISO 80000 8:2011 12 8-27 (7-28) (sound reduction index)
17、R R 10 lg(1/) dB ( 8-26.3) . 8-28 (7-29) , (equivalent absorption area of a surface or object) A 1 , 8-29 (7-30) (reverberation time) Tn 10 n/10( , n dB ) KS A ISO 80000 8:2011 13 8-27.a B 1 B 1/ 10 . , B dB . 8-28.a m2 8-29.a s 8： 153787 1 92 3(13) (02)26240114 (02)262401489 http:/ KS A ISO 80000 8:2011 KSKSKS SKSKS KSKS SKS KS SKS KSKS SKSKS KSKSKS Quantities and units Part 8：Acoustics ICS 01.060 Korean Agency for Technology and Standards http:/www.kats.go.kr
