Noise Criterion Curves - Mitsubishi Mr.SLIM PUH18EK Technical & Service Manual

3. NOISE CRITERION CURVES

PUH18EK
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
PUH30EK PUH36EK
PUH30EK PUH36EK
1
PUH30EK PUH36EK
2
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
SPL(dB) LINE
53
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
SPL(dB)
LINE
55
1
2
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
MICROPHONE
3.3ft
3.3ft
PUH24EK
PUH24EK
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63
PUH42EK PUH42EK7
PUH42EK
90
80
70
60
50
40
30
20 APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63
7
UNIT
Ambient temperature 80°F
Test conditions are based on JIS Z8731
GROUND
1
125 250 500 1000 2000
BAND CENTER FREQUENCIES, Hz
PUH42EK7
1 1
125 250 500 1000 2000
BAND CENTER FREQUENCIES, Hz
SPL(dB) LINE
55
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
4000 8000
SPL(dB)
LINE
56
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
4000 8000