Hearing Aid
Hearing Aid
A Hearing Aid (pronunciation: /ˈhɪərɪŋ eɪd/) is a device designed to improve hearing by making sound audible to a person with hearing loss. Hearing aids are classified as medical devices in most countries, and regulated by the respective regulations.
Etymology
The term "Hearing Aid" is derived from the English words "hearing", which means the faculty of perceiving sounds, and "aid", which means to help or assist. Thus, a hearing aid is a device that assists in hearing.
Types of Hearing Aids
There are several types of hearing aids, which vary in size, power and circuitry. Among them are:
- Behind the Ear (BTE): These hearing aids hook over the top of your ear and rest behind the ear.
- In the Ear (ITE): These hearing aids fill the outer part of the ear.
- In the Canal (ITC) and Completely in the Canal (CIC): These hearing aids are contained in a tiny case that fits partly or completely into the ear canal.
- Receiver in Canal (RIC) and Receiver in the Ear (RITE): These hearing aids are similar to a behind-the-ear hearing aid but the speaker is inside the ear canal.
Related Terms
- Audiologist: A healthcare professional who is trained to evaluate hearing loss and related disorders, including balance (vestibular) disorders and tinnitus, and to rehabilitate individuals with hearing loss and related disorders.
- Cochlear Implant: A device that provides direct electrical stimulation to the auditory (hearing) nerve in the inner ear.
- Tinnitus: The perception of noise or ringing in the ears.
- Decibel: A unit used to measure the intensity of a sound or the power level of an electrical signal by comparing it with a given level on a logarithmic scale.
External links
- Medical encyclopedia article on Hearing Aid
- Wikipedia's article - Hearing Aid
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