14
8.
Sound pressure level
8000
4000
2000
1000
500
250
125
63
63
63
63
63
63
63
63
70
60
50
40
30
20
10
H
M
L
Octave band sound pressure level dB
Octave band center frequency (Hz)
Limit of
audible
continuous
noise
NC-60
NC-50
NC-40
NC-30
NC-20
8000
4000
2000
1000
500
250
125
63
63
63
63
63
63
63
63
70
60
50
40
30
20
10
M
L
H
Octave band sound pressure level dB
Octave band center frequency (Hz)
Limit of
audible
continuous
noise
NC-60
NC-50
NC-40
NC-30
NC-20
8000
4000
2000
1000
500
250
125
63
63
63
63
63
63
63
63
70
60
50
40
30
20
10
Limit of
audible
continuous
noise
Octave band center frequency (Hz)
H
M
L
Octave band sound pressure level dB
NC-60
NC-50
NC-40
NC-30
NC-20
0.8m
1m
1) Testing illustrate:
2) Testing condition:
a: Unit running in the normal condition
b: Test in the semi-anechoic chamber
c: Noise level varies from the actual factors such as room structure, etc.
3) Sound curves:
AWSI-HBV007/009/012-N11
AWSI-HBV016/018/024-N11
AWSI-HBV030-N11
