Airwell DAF009 - Page 81

SOUND LEVEL CHARACTERISTICS
SM YIF 2-A.1 GB 7-17
YIF060 Cooling YIF060 Heating
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]
Octave Band Sound Pressure Level [dB re 20 mPa]
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]
Octave Band Sound Pressure Level [dB re 20 mPa]