7. Sound Data
7. Sound Data
Sound Pressure level
Unit: dB(A)
1.5m
Microphone
2)
CNH12NDB(AC012BNNDCH/AA)
•
NC Curve
1) CNH09NDB(AC009BNNDCH/AA)
3)
CNH18NDB(AC018BNNDCH/AA)
NOTE
•
Specifications may be subject to change without prior notice.
- Sound pressure level is obtained in an anechoic room.
- Sound pressure level is a relative value, depending on the distance and acoustic environment.
- Sound pressure level may differ depending on operation condition.
- dBA = A weighted sound pressure level
-
Reference acoustic pressure 0 dB = 20μPa
Wind-Free 4Way Cassette (600x600)
Model
High
Mid
CNH09NDB(AC009BNNDCH/AA)
31
28
CNH12NDB(AC012BNNDCH/AA)
34
30
CNH18NDB(AC018BNNDCH/AA)
39
34
Low
25
25
29