PASSIVE ATTENUATION (EN352-1 AND EN352-3)
SM1P/B measured in accordance with EN352-1 and EN352-3.
Headband mount- SM1PBXXX & SM1BBXXX (EN352-1)
Frequency (Hz)
125 250 500 1000 2000 4000 8000 H
M L
SNR
(dB)
Mean attenuation (dB)
22.5 24.5 31.5
34.9 35.8 38.0
39.8
35 30 24
33
Standard deviation (dB)
4.8 2.6
2.3
3.1
2.5
2.1
2.7
Mean attenuation
–
Standard deviation(dB)
17.7 21.9 29.2
31.8 33.3 35.9
37.1
Behind-the-Neck mount - SM1PEXXX & SM1BEXXX (EN352-1)
Frequency (Hz)
125 250 500 1000 2000 4000 8000 H
M L
SNR
(dB)
Mean attenuation (dB)
20.7 21.3 27.7
34.0 33.3 35.3
36.1
32 27 21
30
Standard deviation (dB)
5.1 3.3
3.1
2.5
2.9
2.3
2.6
Mean attenuation
–
Standard deviation(dB)
15.6 18.0 24.6
31.5 30.4 33.0
33.5
Helmet mount- SM1PHXXX & SM1BHXXX (EN352-3)
Frequency (Hz)
125 250 500 1000 2000 4000 8000 H
M L
SNR
(dB)
Mean attenuation (dB)
20.4 22.2 28.2
33.5 36.9 38.0
37.5
34 28 22
31
Standard deviation (dB)
3.6 3.3
3.3
3.6
2.3
3.9
3.0
Mean attenuation
–
Standard deviation(dB)
16.9 18.8 24.9
29.8 34.6 34.1
34.6
En
glis
h
DOC00084 SM1P/B Manual rev 14.00
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Summary of Contents for SM1B
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Page 5: ...HEADSET ANATOMY FIGURE1 English DOC00084 SM1P B Manual rev 14 00 3 ...
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