Noise Criterion Curves - Mitsubishi Electric PLA-M35EA Service Manual

5

NOISE CRITERION CURVES

PLA-M35EA.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-M71EA.UK
90
80
70
60
50
40
30
20 APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
OCH697
NOTCH SPL(dB) LINE
High 31
Medium1 29
Medium2 28
Low 26
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
NOTCH SPL(dB) LINE
High 34
Medium1 32
Medium2 30
Low 28
500 1000 2000 4000 8000
PLA-M50EA.UK
PLA-M60EA.UK
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125
PLA-M100EA.UK
90
80
70
NC-70
60
NC-60
50
NC-50
40
NC-40
30
NC-30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NC-20
NOISE
10
63 125
16
NOTCH SPL(dB)
High 32
Medium1 31
Medium2 29
Low 27
250 500 1000 2000 4000
BAND CENTER FREQUENCIES, Hz
NOTCH SPL(dB)
High 40
Medium1 37
Medium2 34
Low 31
250 500 1000 2000 4000
BAND CENTER FREQUENCIES, Hz
LINE
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
8000
LINE
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
8000