a d a p t i v e
d i r e c t i o n a l i t y
®
t e l e p h o n e
u s e
c e l l p h o n e
c o m p a t i b i l i t y
14
13
If your hearing aid is equipped with
Adaptive
Directionality
, it automatically switches
between omni and directional microphones
depending on the environment. This feature
eliminates the need to push a button when in
different listening situations, allowing hands-
free operation of your hearing instrument.
Ask your hearing healthcare provider if
Adaptive Directionality
is a featured option
on your hearing instrument.
Your
flx
hearing instrument allows you to use
the phone as you normally do - holding the
phone up to your ear. If you experience
discomfort from the bud pressing in your ear
canal, you may need a different size sound
tube. If this occurs, contact your hearing
healthcare professional.
Some hearing aid users have reported a
buzzing sound in their hearing aids when they
are using cell phones, indicating that the cell
phone and hearing aid 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 cell phone can be predicted by adding
the rating for the hearing aid immunity to the
rating for the cell phone emissions. For
example, the sum of a hearing aid rating of 2
(M2/T2) and a telephone rating of 3
(M3/T3) 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 aid is at least
M2/T2. The equipment performance
measurements, categories and system
classifications are based upon the best
information available but cannot guarantee
that all users will be satisfied.
NOTE:
The performance of individual
hearing aids may vary with individual cell
phones. Therefore, please try this hearing aid
with your cell phone or, if you are purchasing
a new phone, be sure to try it with your
hearing aid prior to purchase. For additional
guidance, please ask your cell phone provider
for the booklet entitled "Hearing Aid
Compatibility with Digital Wireless Cell
Phones."
flx manual 3/6/09 3:56 PM Page 19
