How Hearing Aids Work

A hearing aid is a small electronic device worn in or behind the ear. It makes some sounds louder so that an individual with hearing loss can listen to and communicate with others. Hearing aid styles include behind-the-ear, inside-the-ear and very small invisible styles. Your needs and budget will help determine your hearing aid style.

How Hearing Aids Work

A hearing aid has three basic parts: microphone, amplifier and speaker. The hearing aid receives sound through a microphone, which converts sound waves to electrical signals and sends them to an amplifier. The amplifier increases the power of the signals and sends them to the ear through a speaker. Today’s hearing aids use special circuitry and microphones in order to better help amplify speech in noisy situations.

Do I need a hearing aid in both ears?

Hearing with both ears provides the best possible situation for communication as it provides these advantages:
  • Better word recognition
  • Ability to hear speech from both sides of the head
  • Improved hearing for soft and distant speech
  • Ease of locating sound sources
  • Less stressful listening
With the help of these advantages, wearing two hearing aids can more accurately represent the way things are meant to be heard. In most cases, it is only recommended that someone wear one hearing aid if they have damage in one ear only.
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