Policy Statement on Hearing Assistance Technologies
Hearing aids are the most effective and potent therapeutic tool available for the vast majority of hard of hearing people. It is agreed that they are a crucial and necessary component in any effort designed to mitigate the consequences of a hearing loss. But some problems caused by a hearing loss either cannot be helped by a hearing aid, or the aid by itself may be inadequate, as the two following examples will illustrate:
Many hard of hearing people have difficulty understanding a lecture or a sermon, or following the dialogue in a theater performance or movie house. In these types of locations, any large-area assistive listening device can further improve comprehension beyond that possible with hearing aids.
Hearing aids are not designed to serve as an alarm clock, and unless the hard of hearing sleeper wears the hearing aid all night (not a good idea), an audible alarm may not wake this person up. Hearing aids, in other words, while necessary for hard of hearing people, cannot serve purposes for which they were not designed.
In recent years, a entirely new class of Hearing Assistance
Technologies (HAT) have been developed. These include
the three major types of large-area assistive listening
systems (Induction Loop, Infra-Red (IR), and FM Radio),
personal FM systems, telephone amplifiers and TTY's, TV
listening devices and captions, various types of conference
and hand-held microphones, and a large number of signaling
and warning devices (e.g. visual or vibratory alarm clocks
and smoke alarms, telephone and doorbell lights, motion
detectors, etc.). Some HAT are separate units from hearing
aids (e.g. signaling and warning devices, FM and IR receivers)
and can stand alone, while others are designed to work
with or through a hearing aid (e.g. telecoil or direct
audio input capability). Direct audio input (DAI), for
example, is a way of avoiding electromagnetic interference
while accessing assistive listening devices (e.g. the
audio output from a computer). There are many types of
HAT; one only has to consult one of the catalogs available
(check the HLAA Hearing Loss Magizine) to appreciate their
full range.
Chances are that many hard of hearing
people have need for such a device, at least at some times
and for some purposes. However, hard of hearing people
are not generally aware of the existence of these devices
nor understand how their effective use can improve awareness
and accessibility to acoustic signals, either through
substitution (i.e. converting the sound into light, vibration,
or text) or sound enhancement (e.g. a personal FM or TV
listening system ). HLAA suggests that all hard of hearing
people receive a careful "needs assessment"
during the hearing aid selection process. This should
include a check-list of various kinds of communication
situations to ensure that no important ones are overlooked.
It is necessary to determine a person's communication
needs at home, on the job, during recreational, social,
and religious activities, while traveling for fun or business,
or any other kinds of situations unique to the individual.
Such check lists have already been developed and are being
used by leading audiologists. Whether a detailed interview
technique or a check list is used, the goal is to ensure
that the possible usefulness of HAT be thoroughly explored
with each potential hearing aid candidate.
Furthermore, HLAA suggests that dispensers
make specific HAT recommendations, in much the same way
they do with hearing aids, and assist their patients to
learn how to use them, again in the same way they do with
hearing aids. The introduction to, and assistance with
HAT can, HLAA suggests, be included into the hearing aid
selection process, most logically during the hearing aid
trial period (see 1 below) and within the subsequent hearing
aid orientation period (see 2 below). Because of the potential
benefits of HAT for hard of hearing people, HLAA recommends
that all hearing aid dispensers incorporate the evaluation
and dispensing of HAT as an integral component of their
practice.
1) In a previous position paper, HLAA
has recommended that dispensers provide their clients
with a minimum of a 60 day trial period.
2) In a previous position paper,
HLAA has recommended that all hearing aid dispensers offer
their clients the opportunity to participate in a group.