3M 1436 - Page 3

125
14.1
4.2
9.9
63
12.7
2.3
10.3
250
19.1
2.6
16.5
500
29.8
3.2
26.6
1000
35.9
3.3
32.7
2000
30.3
3.3
27.0
4000
37.5
1.8
35.7
8000
33.4
2.7
30.7
Frequency (Hz)
Mf (dB)
sf (dB)
APVf (dB)
APVf=Mf-sf (dB)
SNR=28dB H=30dB, M=26dB, L=18dB
EN 352-1:2002
2