Mitsubishi Electric Mr.Slim PLA-RP3AA Service Manual page 22

4-5. NOISE CRITERION CURVES
PLA-RP3AA.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-RP5AA.UK
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
CEILING
NOTCH SPL(dB) LINE
Hi 34
Mi1 32
Mi2 30
Lo 28
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
NOTCH SPL(dB) LINE
Hi 45
Mi1 43
Mi2 40
Lo 37
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
UNIT
1.5m
MICROPHONE
PLA-RP4AA.UK
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250 500
BAND CENTER FREQUENCIES, Hz
PLA-RP6AA.UK
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250 500
BAND CENTER FREQUENCIES, Hz
22
NOTCH SPL(dB) LINE
Hi 41
Mi1 39
Mi2 36
Lo 33
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
1000 2000 4000 8000
NOTCH SPL(dB) LINE
Hi 45
Mi1 43
Mi2 40
Lo 37
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
1000 2000 4000 8000