A hearing aid is a device that fits behind or in-the-ear.
It is designed to amplify those frequencies of sound that
you have difficulty hearing. They come in variety of
shapes and sizes. Inside the hearing aid is a microphone
that picks up the sound around it, such as speech, traffic
noise, birds songs and this is turned into digital
information using micro-processors inside the hearing
aid. This digital information is sent to the receiver which
acts like a tiny loudspeaker than converts the
information back into sounds you can hear. The key is
that only the sounds that you have trouble hearing will
be amplified beyond the normal level and this is done by
programming the hearing aid to work differently
depending on the environment. Depending on the
specification of the hearing aid, these programs can then
be selected by you as and when required, or the hearing
aid can select them automatically.
While hearing aids will not restore your hearing
completely, they will improve your quality of life. They
will make conversations easier to hear and increase your
confidence when talking in groups or over the telephone.
Hearing in Stereo - Why two hearing aids are better than one?
Just as glasses have two lenses, one for each eye, when you need help with your hearing you will most likely need a hearing aid for each ear. This is called a binaural fitting. People with two hearing aids tend to find it much easier to follow conversations in the background noise, and can more easily tell which direction sounds are coming from, i.e. hearing a car coming on a busy street.