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6-1
SOUND LEVEL CHARACTERISTICS
SM HAFRPM 2-A.1 GB
6.
SOUND LEVEL CHARACTERISTICS
6.1
Sound Pressure Level
6.2
Soud Pressure Level Spectrum
(
Measured as Figure 1
)
HAF 18
HAF 24
Noise spectrum & NC Curves
NC15
NC20
NC25
NC30
NC35
NC40
NC45
NC50
NC55
NC60
NC65
0
10
20
30
40
50
60
70
80
90
63
125
250
500
1000 2000 4000 8000
Octave Band Center Frequencies [Hz]
Oct
ave
Band
Sound
Pr
essur
e
L
evel
[
d
B
re
2
0
m
Pa]
Noise spectrum & NC Curves
NC15
NC20
NC25
NC30
NC35
NC40
NC45
NC50
NC55
NC60
NC65
0
10
20
30
40
50
60
70
80
90
63
125
250
500
1000 2000 4000 8000
Octave Band Center Frequencies [Hz]
Oct
ave
Band
Sound
Pr
essur
e
L
evel
[
d
B
re
2
0
m
Pa]
1m
0.8m
Mic.
Unit
Wall
Figure 1