Data - Mitsubishi Electric PUHZ-W85VHA2 Service Manual

3

DATA

3-1. NOISE CRITERION CURVES
MICROPHONE
1.5m
PUHZ-W85VHA2(-BS).UK
90
80
70
60
50
40
30
20 APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63
1m
MODE
COOLING
HEATING
125 250 500 1000 2000
BAND CENTER FREQUENCIES, Hz
UNIT
GROUND
SPL(dB)
LINE
48
48
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
4000 8000
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