Noise Criterion Curves - Mitsubishi PLA-A12BA Technical Data Book

11

NOISE CRITERION CURVES

11-1. INDOOR UNIT
PLA-A12 BA
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
PLA-A24 BA
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-A18BA
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-A30BA
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
NOTCH SPL(dB)
High
Medium1
Medium2
Low
250 500 1000 2000
BAND CENTER FREQUENCIES, Hz
NOTCH SPL(dB)
High
Medium1
Medium2
Low
125 250 500 1000 2000
BAND CENTER FREQUENCIES, Hz
LINE
32
31
29
28
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
4000 8000
LINE
34
32
30
28
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
4000 8000