2000 11 30 375
(1) Aeq,T,vehcle pa A ASJ Model 1998 d ASJ Model 1998 g AE Aeq,T,vehcle T (2) Aeq,T,store 15 pa r 0 pa (r 0 ) r
pa d A d Aeq,T,a 10 pa 11 11 pa (r 0 ) r Aeq,T,b 12 AE 13 13 AE (r 0 ) r Aeq,T,c 14 Aeq,T,store 15 (3) 29 Aeq,T 16 30
(1) 31 pa 17 17 17 (2) 32 Amax 18 18 Amax (r 0 ) 18 d 36
1
2
3 (1) (2) ASJ Model 1998
4
5 10 30 64
6 10 16 10
a. b. c. (1) ASJ Model 1998 1) Aeq,T,vehcle (2) Aeq,T,store 7
(1) (2) p. p15 ASJ Model 1998 1) Aeq,T,store Aeq,T,vehcle 8
Aeq,T,vehcle ASJ Model 1998 1) 1) 1) 3) 2) 3) pa, ( ) pa, 4) 4) p A, AE t 5) Aeq,T,vehcle 9
1) 5) pa pa pa, = W A 20log10 8 r + + d, g, pa, [db] A [db] WA r [m] d, [db] g, [db] A 10
ASJ Model 1998 1) 20 2) A 82 db ASJ Model 1998 ASJ Model 1998 1) 40 /h 140 /h 10 /h 60 /h 20 d 3) 11
ASJ Model 1998 ASJ Model 1998? d 10log10 20 1 = 5 ± 17snh ( 0 < 0. 053 0. 414 ) 1 0. 053 < 1 <0 >0 1 snh 1 2 1/ 2 x snh x = ln( x + ( x + 1) ) ln ASJ Model 1998 1) -1 d g ASJ Model 1998 1) g =0 12
3) AE AE 1 pa, / 10 = AE 10 log 10 10 t T 0 T 0 1 [s] pa, db t [s] 4) Aeq,T,vehcle Aeq,T,vehcle Aeq, T,vehcle AE 10 = +10log N T T AE [db] T [s] 57,600 [s] 28,800 N T T [s] [ ] T 13
Aeq,T,vehcle ASJ Model 1998 1) 14
(2) Aeq,T,store (1) AE pa pa ( ) ( ) ( ) Aeq,T,a Aeq,T,b Aeq,T,c Aeq,T,store 15
pa T A-1,A-2 pa T T pa T B-1,B-2 p A, T T AE C-1,C-2 AE, *T 1 s T 16
A-1) 4) p.15 pa pa, = pa, ( r0 ) 20log10 + r0 r pa p A, [db] pa, (r 0 ) [db] d, r [m] r o 1 [m] d, [db]( ) r 0 17
pa ( r ) = 20log 0 pa,m 10 r r 0 m pa (r 0 ) [db] pa,m [db] rm [m] r o 1 [m] pa (r 0 ) r Z 8731 18
p.11 d d 10log10N 13 1 = 5 ± 9.1snh ( N 0 N < 0.322 0.485 N ) 1 0.322 N < 1 N N = 2δ / λ δ [m] λ [m] N N<0 N>0 1 snh 1 2 1/ 2 x snh x = ln( x + ( x + 1) ) ln 19
pa WA = 8 + pa, W A, 20log10r d, pa, [db] WA, A [db] r [m] d, [db] A r d = 0 = + 8 + 20 log WA pa 10 r 1) 2) 3) 4) 20
2) [db] 74.5 81.3 86.6 d p.19 21
Aeq,T,a 10 Aeq, T,a 1 = 10 log 10 T T 10 pa, / 10 T [s] 57,600 [s] 28,800 [s] T [s], pa [db] 22
pa p.16 pa 11 pa, = pa, ( r0 ) 20log10 + r0 A, r p d, [db] pa, ( r 0) [db] r [m] r o 1 [m] d, [db]( ) 11 11 pa (r 0 ) r Z 8731 23
24 p.20 90 db 2 khz 1m
85 db 90 db khz 25
71 db 2kHz Aeq,T,b 12 Aeq, T,b 1 = 10 log 10 T T 10 pa, / 10 T [s] 57,600 [s] 28,800 [s] T [s] pa, [db] 26
AE AE 13 AE, = AE, ( r0 ) 20log10 + d, r0 ( r r ) AE, [db] AE, ( r 0) [db] r [m] r o 1 [m] [db] ( ) d, 13 13 AE (r 0 ) r 27
83 db khz 90kg 74 db ( ) khz Aeq,T,c 14 Aeq, T, c T0 = 10log10 N T 10 AE, / 10 T [s] 57,600 [s] 28,800 [s] T 0 1 [s] N AE, [db] 28
Aeq, T, store 10 Aeq,T,store 15 ( ) / 10 / 10 / 10 10 + 10 = 10log + Aeq, T,a Aeq, T,b 10 Aeq, T,c (3) (1) Aeq,T,vehcle (2) Aeq,T,store Aeq,T 16 ( ) /10 /10 Aeq, T = 10log10 10 + 10 Aeq, T,vehcle Aeq, T,store 29
30 10 11 11 pa Amax
(1) pa pa 17 pa, = pa, ( r0 ) 20log 10 + d, r r A, [db] p p A ( r 0) [db] r [m] r 0 1 [m] [db] d 17 17 p.17 pa p.17 17 WA p.20 pa p.20 31
(2) ASJ Model 1998 1) Amax Amax 18 Amax, = Amax, ( r0 ) 20log10 + d, r0 r Amax, [db] ) ( r 0 Amax, [db] r [m] r 0 1 [m] [db] d, 18 18 Amax (r 0 ) 32
33 100 db 2kHz 1m
90 db khz 95 db 34
77 db 2kHz 90 db 4kHz 90kg 82 db 4kHz 18 d p.19 ISO 9613-2 5 35
, ASJ Model 1998,,55(4),281-324,(1999).,, 1.,,50(3),205-214,(1994).,,,18,187-196, (1962).,, 15(4),40-43, (1991). ISO9613-2, Acoustcs Attenuaton of sound durng propagaton outdoors part2: General method of calculaton, (1996). 36