Noise Criterion Curves - Mitsubishi Electric Mr. Slim PM SERIES Manual

CEILING CASSETTE PM SERIES PMH-P1/P1.6/P2BA
A.6.8 NOISE CRITERION CURVES
Ambient temperature 27:
Test conditions are based on JIS Z8731
CEILING
MICROPHON
PMH-P1.6BA
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
A-298
UNIT
1.5m
SPL(dB) LINE
NOTCH
Hi 40
Mi1 38
Mi2 36
Lo 34
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
PMH-P1BA
90
80
70
60
50
40
30
20
APPROXIMATE THRESHOLD OF
HEARING FOR CONTINUOUS
NOISE
10
63 125 250 500
BAND CENTER FREQUENCIES, Hz
PMH-P2BA
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250 500
BAND CENTER FREQUENCIES, Hz
NOTCH SPL(dB) LINE
Hi 35
Mi1 33
Mi2 31
Lo
29
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
1000 2000 4000 8000
SPL(dB) LINE
NOTCH
Hi 42
Mi1 40
Mi2 38
Lo 36
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
1000 2000 4000 8000