York YKHC 18 - Noise Level Analysis; Sound Pressure Level Charts

6
anechoic room.
Part 3. Noise level
FOUR-WAY CASSETTE TYPE
Microphone
1.0m
12.000~24,000 btu/h 30,000~48,000 btu/h
Octave band center frequency £¨ Hz £©
Sound pressure level dB
£¨
0dB=0.0002
|Ì
bar
£©
Audibility limits of
continuous white
sound
Octave band center frequency£¨Hz£©
Sound pressure level dB
£¨
0dB=0.0002
|Ì
bar
£©
Audibility limits of
continuous white
sound