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Hearing Aids - NIDCD

DEPARTMENT OF HEALTH AND HUMAN SERVICES National Institutes of Health NIDCD Fact Sheet | Hearing and Balance Hearing aids What is a Hearing aid? A Hearing aid is a small electronic device that you wear in or behind your ear. It makes some sounds louder so that a person with Hearing loss can listen, communicate, and participate more fully in daily activities. A Hearing aid can help people hear more in both quiet and noisy situations. However, only about one out of five people who would benefit from a Hearing aid actually uses one. A Hearing aid has three basic parts: a microphone, amplifier, and speaker. The Hearing aid receives sound through a microphone, which converts the sound waves to electrical signals and sends them to an amplifier. The amplifier increases the power of the signals and then sends them to the ear through a speaker.

electronic parts are held in the case behind the ear. Sound travels from the hearing aid through the earmold and into the ear. BTE aids are used by people of all ages for mild to profound hearing loss. A new kind of BTE aid is an open-it hearing aid. Small, open-it aids it behind the ear completely, with only a

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