Noise Criterion Curves - Mitsubishi Electric PLA-SM71EA2 Service Manual

5

NOISE CRITERION CURVES

PLA-SM71EA2.UK
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
PLA-SM125EA2.UK
90
80
70
60
50
40
30
20 APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
OCH784
NOTCH SPL(dB) LINE
High 34
Medium1 32
Medium2 30
Low 28
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
4000 8000
500 1000 2000
NOTCH SPL(dB) LINE
High 44
Medium1 41
Medium2 37
Low 33
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
11
PLA-SM100EA2.UK
90
80
70
60
50
40
30
20 APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
PLA-SM140EA2.UK
90
80
70
60
50
40
30
20 APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
CEILING
NOTCH SPL(dB)
High 40
Medium1 37
Medium2 34
Low 31
500 1000 2000 4000 8000
NOTCH SPL(dB)
High 44
Medium1 42
Medium2 39
Low 36
500 1000 2000 4000
BAND CENTER FREQUENCIES, Hz
MAIN UNIT
1.5 m
MICROPHONE
LINE
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
LINE
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
8000