Q) How does the
hearing aid work ?
Hearing aid is an electronic
device which magnifies sounds selectively in various frequencies. For using a hearing aid, the patient should get
his ears examined and an audiogram should be obtained.
Audiogram is a graphic record of the hearing. (ITE)
A hearing aid
which matches with the audiogram should be tried by the
patient for a few minutes. If it is suitable, it can be
purchased. To have better fitting, an ear mould having the
shape of the ear of the patient is prepared for the hearing
aid. Besides the old pockets type of hearing aids, smaller
behind the ear hearing aids are also available. Of late, very
small hearing aids are available which fit into the ear canal
and are hardly visible. Complete in the canal hearing aids
cannot be seen from outside and hence are called "Invisible".
Different models of hearing-aids remedy different types of
hearing loss. Completely in the Canal (CIC), In The Canal
(ITC) and In The Ear (ITE) hearing-aids are custom designed to
fit the wearer's ear inconspicuously; (perfect for those
conscious of their looks).
Behind The Ear
(BTE) hearing aids
are attached to a customised ear
mould. These can be modified
so as to be compatible to external sound sources such as
hearing training equipment, stereos or TVs, etc. These are useful for
children and those who require high amplification. The pocket hearing-aid is
economical and suitable for young children and elderly people
(ITE) with dexterity problems.
Digital and Programmable computerized
aids are the most technologically advanced and are available
in CIC, ITC, ITE and BTE models. Digital technology enables
one to hear loud and soft sounds, high and low tones
practically at the level of a person with normal hearing.
Added to which comes excellent speech intelligibility in
noise. This means that low frequency noise, such as in a car
or aircraft, is reduced and the clarity of speech enhanced to
a pleasant level. You hear your environment again just as you
would like to. There are individually adjustable hearing
programs to provide this facility, e.g. for your home and your
place of work. No internal noise spoils the hearing experience
and, thanks to the latest technology, interference from
cordless and mobile telephones is now drastically reduced.
With precise fitting and smooth functioning, it is the ideal
hearing instrument class for all age groups.