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LIVELLI DI PRESSIONE SONORA
MOD.
63
(dB)
La
Lb
La
15
57,7
47,7
50,8
18
58,0
48,0
51,0
21
58,0
49,0
51,0
25
59,0
49,0
51,0
31
54,0
51,0
56,0
41
54,5
51,0
56,0
51
55,0
51,5
56,3
61
55,0
52,0
56,3
MOD.
63
(dB)
Lc
Ld
Lc
15
57,8
49,3
50,3
18
58,0
49,5
50,5
21
58,5
49,5
51,0
25
58,5
50,0
51,0
31
56,0
52,0
55,5
41
56,5
52,0
55,5
51
56,0
53,0
56,0
61
56,0
53,0
56,0
L (a, b, c, d):
valori di pressione sonora rilevati in condizioni
di campo libero con fonometro posizionato
ad 1 m dall'unità e 1,5 m da terra, nei punti
in figura.
16
BANDE D'OTTAVA\OCTAVE BANDS (Hz)
125
250
500
(dB)
(dB)
(dB)
Lb
La
Lb
La
46,2
50,3
45,8
49,8
46,5
50,5
46,0
50,0
47,0
51,0
46,0
50,5
47,0
52,0
46,5
51,0
50,5
54,0
50,0
59,0
50,5
54,5
50,5
59,5
51,0
54,6
51,0
59,7
51,0
54,6
51,5
59,7
BANDE D'OTTAVA\OCTAVE BANDS (Hz)
125
250
500
(dB)
(dB)
(dB)
Ld
Lc
Ld
Lc
49,7
51,8
48,7
54,3
50,0
52,0
49,0
54,5
50,0
52,0
50,0
55,0
50,5
53,0
50,0
55,0
51,0
55,5
51,0
56,0
51,5
56,0
51,0
56,0
52,0
56,0
51,5
56,5
51,5
56,0
51,5
56,5
Ld
Mod. 15 - 18 - 21 - 25 - 31- 41- 51 - 61
1000
2000
(dB)
(dB)
Lb
La
Lb
La
Lb
48,3
47,8
43,8
46,3
40,8
48,5
48,0
44,0
46,5
41,0
49,0
48,5
44,5
46,5
41,5
49,5
49,5
45,5
47,0
42,5
46,0
51,5
47,5
47,0
44,0
46,5
52,0
47,0
47,5
44,0
47,0
52,1
47,5
47,5
44,5
47,0
52,2
48,0
47,5
44,5
1000
2000
(dB)
(dB)
Ld
Lc
Ld
Lc
Ld
50,2
49,8
47,7
45,8
43,7
50,5
50,0
48,0
46,0
44,0
50,5
50,0
48,0
46,5
44,0
51,0
50,5
48,5
47,0
45,0
52,5
51,0
49,5
49,5
45,5
53,0
53,5
49,7
49,5
45,5
53,5
53,5
50,0
50,0
46,0
54,0
54,0
50,0
50,0
46,0
L (a, b, c, d):
La
Lb
Lc
SOUND PRESSURE LEVEL
4000
8000
(dB)
(dB)
La
Lb
La
Lb
42,8
41,3
45,8
44,8
43,0
41,5
46,0
45,0
43,0
42,0
46,0
45,5
43,0
42,0
46,0
45,5
46,0
43,5
47,0
46,0
47,0
44,0
47,5
47,0
47,0
44,0
47,0
47,0
47,0
44,0
47,0
47,0
4000
8000
(dB)
(dB)
Lc
Ld
Lc
Ld
42,8
41,7
45,5
45,0
43,0
42,0
45,5
45,0
43,0
42,5
45,5
45,5
43,0
42,5
46,0
45,5
45,0
46,0
47,0
47,0
45,5
47,0
47,0
47,0
46,0
46,5
47,0
47,5
46,5
46,0
47,0
47,0
sound pressure level measured in free field
conditions, at 1 m fromthe unit et 1,5 m from
the floor level, in the point on the picture.
TOTALE
TOTAL
dB(A)
La
Lb
53,7
50,8
53,9
51,0
54,2
51,5
54,7
52,0
58,7
52,6
59,2
52,9
59,3
53,2
59,3
53,4
TOTALE
TOTAL
dB(A)
Lc
Ld
55,5
52,9
55,7
53,2
55,9
53,4
56,2
53,8
57,6
55,2
58,3
55,6
58,6
55,9
58,8
55,9
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