
18
10
20
30
40
50
60
70
80
0
0
0
8
0
0
0
4
0
0
0
2
0
0
0
1
0
0
5
0
5
2
5
2
1
A5DB125H
NC70
NC45
NC50
NC55
NC60
NC65
NC20
NC25
NC30
NC35
NC40
H
Octave-band frequency (Hz)
Sound pressure level (dB, ref 20
μ
Pa)
10
20
30
40
50
60
70
80
0
0
0
8
0
0
0
4
0
0
0
2
0
0
0
1
0
0
5
0
5
2
5
2
1
NC70
NC45
NC50
NC55
NC60
NC65
NC20
NC25
NC30
NC35
NC40
H
A5DB150H
Octave-band frequency (Hz)
Sound pressure level (dB, ref 20
μ
Pa)