Phonak FreeCom 7000 Handbuch Seite 18

6 Technical Data
Table 1a: Criteria levels for FreeCom 7000 with CUSTOM ear shells
H
M
L
Table 2: Passive attenuation values for the FreeCom 7000 with GENERIC ear shells with silicone eartips
Frequency
(Hz)
125
250
500
1000
2000
4000
8000
SNR=22
18
108 dB .
105 dB .
98 dB .
Mean attenuation Standard
deviation (dB)
(dB)
23.4 3.6
21.4 4.2
20.5 2.5
22.7 3.5
27.0 3.0
23.1 4.2
26.4 4.8
L=19 M=19
SNR | Single Number
APV (dB)
Rating attenuation value
L | Low-frequency
attenuation value
19.8
M | Medium-frequency
17.2
attenuation value
H | High-frequency
18.0
attenuation value
19.2
APV | Assumed
Protection Value
24.0
18.9
21.6
H=21