53
Mobile Phone
Some hearing instrument users have reported a buzzing sound in their hearing instru-
ments when they are using mobile phones, indicating that the mobile phone and hearing
instrument may not be compatible.
According to the ANSI C63.19 standard (ANSI C63.19–2006 American National Standard
Methods of Measurement of Compatibility Between Wireless Communications Devices
and Hearing Aids), the compatibility of a particular hearing aid and mobile phone can be
predicted by adding the rating for the hearing aid immunity to the rating for the mobile
phone emissions. For example, the sum of a hearing aid rating of 2 (M2) and a telephone
rating of 3 (M3) would result in a combined rating of 5. Any combined rating that equals
at least 5 would provide “normal use”; a combined rating of 6 or greater would indicate
“excellent performance”.
The immunity of this hearing instrument is minimum M4. The equipment performance
measurements, categories and system classifications are based upon the best informa-
tion available but cannot guarantee that all users will be satisfied.
To Next Page
Loading...
