MWC
125
Hz
250
Hz
500
Hz
1000
Hz
2000
Hz
4000
Hz
8000
Hz
EUROVENT
Lwa dB(A)
(1)
Lp dB(A)
(2)
Lp dB(A)
180
38
57
70
78
78
70
65
81
54
50
230
44
67
74
82
84
77
69
87
59
56
280
46
70
76
84
87
80
71
89
61
58
330
48
71
78
85
88
81
73
90
63
60
380
49
72
79
86
89
82
74
92
64
61
450
50
73
79
87
90
83
75
92
65
62
510
50
74
80
88
91
84
75
93
65
62
570
51
74
80
88
91
84
76
93
66
63
650
55
73
81
91
94
86
76
96
68
65
720
57
71
81
93
95
87
75
97
70
66
MWC
A = 2(L+2d)(h+d)+2(l+2d)(h+d)+(L+2d)(l+2d)
d
d
h+d
L+ 2d
l+ 2d
Lp = Lw - 10 log 2
π
d²
MWC
125
Hz
250
Hz
500
Hz
1000
Hz
2000
Hz
4000
Hz
8000
Hz
EUROVENT
Lwa dB(A)
(1)
Lp dB(A)
(2)
Lp dB(A)
180
39
53
65
67
66
58
53
71
43
40
230
44
69
71
72
74
67
57
78
50
47
280
46
72
74
75
77
70
59
80
53
50
330
47
74
75
76
78
71
61
82
55
51
380
48
75
76
77
79
73
62
83
56
52
450
49
76
77
78
80
73
63
84
56
53
510
50
76
78
79
81
74
63
85
57
54
570
50
77
78
79
81
74
64
85
57
54
650
54
75
78
82
84
76
63
87
59
56
720
56
73
78
84
85
78
63
88
60
57
• 12 •
Application Guide
•
MWC-0410-E
ACOUSTIC DATA
Spectrum per octave band dB(A)
Global sound
power
Sound pressure at
10 m.
Semi-spheric
Sound pressure
envelopping
surface at 10 m.
(1) : For information only: data calculated by semi spheric method in free open
fi
el.
(2) : For information only : data calculated by envelopping surface method in free open
fi
eld.
Enveloping Surface
STANDARD UNIT
UNIT WITH PANEL ENCLOSURE (OPTION)
Spectrum per octave band dB(A)
Global sound
power
Sound pressure at
10 m
Semi-spheric
Sound pressure
envelopping
surface at 10 m.
Semi spheric
Summary of Contents for MRC 180
Page 2: ......
