Noise Criterion Curves - Mitsubishi Electric PLA-A·BA4 Technical Data Manual

11

NOISE CRITERION CURVES

11-1. INDOOR UNIT
PLA-A12 BA4
90
80
70
60
50
40
30
20 APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
PLA-A24 BA4
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
86
NOTCH SPL(dB) LINE
High 31
Medium1 29
Medium2 28
Low 27
500 1000 2000 4000 8000
NOTCH SPL(dB) LINE
High 32
Medium1 31
Medium2 29
Low 28
500 1000 2000 4000 8000
PLA-A18BA4
90
80
70
NC-70
60
NC-60
50
NC-50
40
NC-40
30
NC-30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
NC-20
CONTINUOUS
NOISE
10
63 125
PLA-A30BA4
90
80
70
NC-70
60
NC-60
50
NC-50
40
NC-40
30
NC-30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
NC-20
CONTINUOUS
NOISE
10
63 125
NOTCH SPL(dB)
High 32
Medium1 31
Medium2 29
Low 28
250 500 1000 2000 4000
BAND CENTER FREQUENCIES, Hz
NOTCH SPL(dB)
High 34
Medium1 32
Medium2 30
Low 28
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