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Noise Criteria Curves - Mitsubishi Electric MXZ-24UV -E2 Service Manual

Inverter-controlled multi system
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6

NOISE CRITERIA CURVES

90
80
70
60
50
40
30
APPROXIMATE
20
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63
E1
125
250
BAND CENTER FREQUENCIES, Hz
NOTCH
Test conditions.
Cooling :DB35:
Heating :DB 7:
500
1000
2000
8
SPL(dB
)
LINE
(A)
46
47
WB24:
WB 6:
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
4000
8000

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