22
LIVELLI DI PRESSIONE SONORA SOUND PRESSURE LEVEL
L (a, b, c, d): sound pressure level measured in
free eld conditions, at 1 m from
the unit, 1,5 m from the oor level
in the point on the picture.
L (a, b, c, d): valori di pressione sonora
rilevati in condizioni di campo libero
con fonometro posizionato ad 1 m dall’unità,
1,5 m da terra nei punti in figura.
Lc
LbLd
La
Mod. 91 - 101 - 131 - 151
MOD.
BANDE D’OTTAVA / OCTAVE BANDS (Hz) TOT.
dB(A)
La Lb
63 125 250 500 1000 2000 4000 8000
(dB) (dB) (dB) (dB) (dB) (dB) (dB) (dB)
La Lb La Lb La Lb La Lb La Lb La Lb La Lb La Lb
91
61,5 60,5 63,5 60,0 55,5 57,0 56,5 53,5 55,5 52,5 51,5 50,0 47,5 46,0 48,0 48,0
59,9 57,9
101
61,0 61,0 63,0 60,0 55,5 57,5 57,0 53,5 56,5 52,5 52,5 50,0 48,0 46,0 48,5 48,0
60,6 57,9
131
61,5 61,0 63,5 61,0 56,0 58,0 57,5 54,5 57,0 53,0 53,0 51,0 48,5 46,0 49,0 48,0
61,1 58,6
151
61,5 61,0 63,5 61,0 56,0 58,0 57,5 55,0 57,5 53,5 53,0 51,0 48,5 46,5 49,0 48,0
61,3 58,9
MOD.
BANDE D’OTTAVA / OCTAVE BANDS (Hz) TOT.
dB(A)
Lc Ld
63 125 250 500 1000 2000 4000 8000
(dB) (dB) (dB) (dB) (dB) (dB) (dB) (dB)
Lc Ld Lc Ld Lc Ld Lc Ld Lc Ld Lc Ld Lc Ld Lc Ld
91
59,0 60,0 62,0 63,0 53,5 55,0 54,5 56,0 53,5 51,5 50,0 47,5 46,0 47,0 47,0 48,0
58,1 57,9
101
59,0 60,0 62,0 63,0 53,5 55,5 54,5 56,0 54,0 51,5 50,0 48,0 46,0 47,5 47,5 48,0
58,3 58,0
131
59,0 60,0 62,0 63,5 54,0 56,0 54,5 56,5 54,5 52,0 50,0 48,0 46,5 47,5 48,0 48,0
58,6 58,4
151
59,0 60,0 63,5 64,0 54,0 56,0 54,5 57,0 55,0 52,0 50,0 48,0 47,0 48,0 48,0 48,0
59,0 58,6