7
NOISE CRITERIA CURVES
3
MSH-XV07UV -
E1
MSH-XV09UV -
E1
MSH-XV12UV -
E1
MUH-XV07UV -
MUH-XV09UV -
MUH-XV12UV -
E1
E1
E1
90
80
70
60
50
40
30
20
10
63
125
250
500
1000
2000
4000
8000
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
BAND CENTER FREQUENCIES, Hz
Test conditions,
Cooling : Dry-bulb temperature 27
:
Wet-bulb temperature 19
:
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
36
SPL(dB(A))
LINE
High
NOTCH
Heating : Dry-bulb temperature 20
:
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
90
80
70
60
50
40
30
20
10
63
125
250
500
1000
2000
4000
8000
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
BAND CENTER FREQUENCIES, Hz
Test conditions,
Cooling : Dry-bulb temperature 27
:
Wet-bulb temperature 19
:
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
39
SPL(dB(A))
LINE
High
NOTCH
Heating : Dry-bulb temperature 20
:
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
90
80
70
60
50
40
30
20
10
63
125
250
500
1000
2000
4000
8000
BAND CENTER FREQUENCIES, Hz
Test conditions,
Cooling : Dry-bulb temperature 27
:
Wet-bulb temperature 19
:
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
42
SPL(dB(A))
LINE
High
NOTCH
Heating : Dry-bulb temperature 20
:
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
90
80
70
60
50
40
30
20
10
63
125
250
500
1000
2000
4000
8000
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
BAND CENTER FREQUENCIES, Hz
Test conditions,
Cooling : Dry-bulb temperature 35
:
Wet-bulb temperature (24
:
)
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
49
SPL(dB(A))
LINE
High
NOTCH
Heating : Dry-bulb temperature 7
:
Wet-bulb temperature 6
:
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
OB294--1.qxp 02.1.26 1:52 PM Page 7
Содержание MSH-XV07UV
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