![]() The audiologist will recommend the most suitable style of hearing aid based on the patient's audiological configuration and needs. They differ in size, placement on/in the ear, and the amount of amplification they provide. There are three basic styles of hearing aids. The amplifier increases the loudness of the signals and sends them to the ear through the speaker. Sounds are picked up by the microphone, converted into electrical signals and sent to the amplifier. ![]() How does a hearing aid work?Ī hearing aid has three basic parts: a microphone, amplifier and speaker. It amplifies sounds in the environment, including speech, so that they become louder and clearer to the hearing-impaired individual. A hearing aid is an electronic device that can be worn inside or behind the ear.
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