Phonak FreeCom 7100 User Manual page 18

F Technical Data
Table 1: Passive attenuation values for the FreeCom 7100 headset with the CUSTOM ear molds.
Frequency (Hz)
125
250
500
1000
2000
4000
8000
SNR=24
Table 1a: Criteria levels for FreeCom 7100 with CUSTOM ear shells.
H
M
L
18
Mean Standard
attenuation (dB) deviation (dB)
21.8 5.2
21.9 5.2
21.1 5.8
26.7 4.0
32.7 3.5
29.8 3.4
31.7 4.7
L=18 M=20
108 dB .
105 dB .
98 dB .
SNR | Single Number
APV (dB)
Rating attenuation value
L | Low-frequency
attenuation value
16.7
M | Medium-frequency
16.7
attenuation value
H | High-frequency
15.3
attenuation value
22.8
APV | Assumed
Protection Value
29.2
26.5
27.0
H=27