Mitsubishi Electric PLA-RP·BA(2) Technical Data Book page 46

PLA-RP100BA
PLA-RP100BA2
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
NOTCH SPL(dB) LINE
High 40
Medium1 37
Medium2 34
Low 32
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
CEILING
PLA-RP125BA
PLA-RP125BA2
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125
1.5m
MICROPHONE
46
NOTCH SPL(dB)
High
Medium1
Medium2
Low
250 500 1000 2000
BAND CENTER FREQUENCIES, Hz
UNIT
LINE
41
39
36
34
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
4000 8000