How do Hearing Aids Work?

The primary purpose of hearing aids is to carry sounds from the environment into your ear and make them loud enough for you to be able to actually hear them. Most hearing aids are battery-powered digital devices that include three main components:
Microphone: Picks up sound and converts the sound waves into electrical signals.
Amplifier: Increases the power of those signals to make them louder and sends them to a receiver/speaker.
Receiver: Transmits the amplified sound into the ear canal for you to be able to hear.
Technologically advanced devices available today also include a computer chip:
  • The microphone transmits the sound to the computer chip.
  • The programmable chip contains dozens of features (if not more) that collectively analyze and adjust the sounds around you, based on its existing volume, varying acoustic components in your forever-changing listening environments, as well as your specific hearing loss.
  • After necessary analyses and adjustments, the chip converts the amplified frequencies into sound waves, which the device’s speakers deliver to your ears.
  • There are even hearing aids that have the necessary technology to adjust its settings automatically to your acoustic preferences
  • This process does not stop as long as the hearing aids are working.
Originally Posted on: Echo Audiology 

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