1
1-96
1-8. Noise Criterion Curves
Wall-Mounted Type
SPW-KR254GH56 (A/B)
SPW-KR184GH56 (A/B)
MEDIUM
WEAK
MEDIUM
WEAK
MODEL :
SOUND LEVEL : 38 dB(A)
30 dB(A)
34 dB(A)
CONDITION :
MODEL :
SOUND LEVEL : 41 dB(A)
34 dB(A)
37 dB(A)
CONDITION :
NC-20
NC-30
NC-40
NC-50
400063 125 250 800020001000500
60
50
40
30
20
10
NC-20
NC-30
NC-40
NC-50
400063 125 250 800020001000500
60
50
40
30
20
10
Strong
Weak
Both 50Hz / 60Hz
STRONG
STRONG
1 m in front at height of 1 m
1 m in front at height of 1 m
Frequency at center of sound pressure band (Hz)
Frequency at center of sound pressure band (Hz)
Overall
Sound pressure level (dB)
(0dB = 0.0002µbar)
Approximate
minimum audible
limit for
continuous noise
Overall
Sound pressure level (dB)
(0dB = 0.0002µbar)
Approximate
minimum audible
limit for
continuous noise
SM830161Book.indb96SM830161Book.indb96 2008/06/039:08:062008/06/039:08:06