Noise Criterion Curves - Mitsubishi Electric Mr.Slim PLY-P18BA.TH Service Manual

5

NOISE CRITERION CURVES

PLY-P18BA.TH
90
80
70
60
50
40
30
20 APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
PLY-P30BA.TH
90
80
70
60
50
40
30
20 APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
OCH551A
NOTCH SPL(dB) LINE
High 32
Medium1 30
Medium2 29
Low 28
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
NOTCH SPL(dB) LINE
High 41
Medium1 38
Medium2 35
Low 33
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
PLY-P24BA.TH
90
80
70
60
50
40
30
20 APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
PLY-P36BA.TH
PLY-P42BA.TH
PLY-P48BA.TH
90
80
70
60
50
40
30
20 APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
CEILING
1.5m
MICROPHONE
14
NOTCH SPL(dB) LINE
High 34
Medium1 32
Medium2 30
Low 28
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
NOTCH SPL(dB) LINE
High 44
Medium1 41
Medium2 39
Low 37
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
UNIT