手引き（セット版）.PDF

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3 (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

4 pa d A d Aeq,T,a 10 pa pa (r 0 ) r Aeq,T,b 12 AE AE (r 0 ) r Aeq,T,c 14 Aeq,T,store 15 (3) 29 Aeq,T 16 30

5 (1) 31 pa (2) 32 Amax Amax (r 0 ) 18 d 36

6 1

7 2

8 3 (1) (2) ASJ Model 1998

9 4

12 a. b. c. (1) ASJ Model ) Aeq,T,vehcle (2) Aeq,T,store 7

13 (1) (2) p. p15 ASJ Model ) Aeq,T,store Aeq,T,vehcle 8

14 Aeq,T,vehcle ASJ Model ) 1) 1) 3) 2) 3) pa, ( ) pa, 4) 4) p A, AE t 5) Aeq,T,vehcle 9

15 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

16 ASJ Model ) 20 2) A 82 db ASJ Model 1998 ASJ Model ) 40 /h 140 /h 10 /h 60 /h 20 d 3) 11

17 ASJ Model 1998 ASJ Model 1998? d 10log = 5 ± 17snh ( 0 < ) < 1 <0 >0 1 snh 1 2 1/ 2 x snh x = ln( x + ( x + 1) ) ln ASJ Model ) -1 d g ASJ Model ) g =0 12

18 3) AE AE 1 pa, / 10 = AE 10 log 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

19 Aeq,T,vehcle ASJ Model ) 14

20 (2) Aeq,T,store (1) AE pa pa ( ) ( ) ( ) Aeq,T,a Aeq,T,b Aeq,T,c Aeq,T,store 15

21 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

22 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

23 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

24 p.11 d d 10log10N 13 1 = 5 ± 9.1snh ( N 0 N < N ) 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

25 pa WA = 8 + pa, W A, 20log10r d, pa, [db] WA, A [db] r [m] d, [db] A r d = 0 = log WA pa 10 r 1) 2) 3) 4) 20

26 2) [db] d p.19 21

27 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

28 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]( ) pa (r 0 ) r Z

29 24 p db 2 khz 1m

30 85 db 90 db khz 25

31 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

32 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, AE (r 0 ) r 27

33 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

34 Aeq, T, store 10 Aeq,T,store 15 ( ) / 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 = 10log Aeq, T,vehcle Aeq, T,store 29

35 pa Amax

36 (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 p.17 pa p WA p.20 pa p.20 31

37 (2) ASJ Model ) Amax Amax 18 Amax, = Amax, ( r0 ) 20log10 + d, r0 r Amax, [db] ) ( r 0 Amax, [db] r [m] r 0 1 [m] [db] d, Amax (r 0 ) 32

38 db 2kHz 1m

39 90 db khz 95 db 34

40 77 db 2kHz 90 db 4kHz 90kg 82 db 4kHz 18 d p.19 ISO

41 , ASJ Model 1998,,55(4), ,(1999).,, 1.,,50(3), ,(1994).,,,18, , (1962).,, 15(4),40-43, (1991). ISO9613-2, Acoustcs Attenuaton of sound durng propagaton outdoors part2: General method of calculaton, (1996). 36

x : = : x x

x : = : x x x :1 = 1: x 1 x : = : x x : = : x x : = : x x ( x ) = x = x x = + x x = + + x x = + + + + x = + + + + +L x x :1 = 1: x 1 x ( x 1) = 1 x 2 x =1 x 2 x 1= 0 1± 1+ 4 x = 2 = 1 ± 5 2 x > 1