Explaining the Parts of a Modern Hearing Aid

Today’s hearing aid devices are a lot like mini computers for your ears. Hearing aid technology has definitely come a long way since the invention of the first hearing aids. And while you don’t need to understand how the technology works as long as you can hear when you turn the device on, it’s always a good idea to have a basic knowledge of the various parts of a hearing aid. The following components are the most common parts of a hearing aid device. Almost all hearing aids consist of the same components which are held together in a protective case often made of plastic. Parts of a modern hearing aid include:


  • The first major component of a hearing aid is the microphone, which picks up sounds from the air and converts them into electrical signals.  NOTE: It’s important to keep this part of your hearing aid clean and dry. This helps keep the microphone screen clean, free of debris and working properly. You can always ask your hearing care professional for tips and advice on hearing aid maintenance.


  • After the microphone picks up the sounds, it then sends those signals to the amplifier. The amplifier increases the intensity of the signals from the microphone, and helps filter and modify the sounds so that only sounds relevant for the user are amplified.

Receiver a.k.a. Loudspeaker

  • The third basic component of a hearing aid is the receiver also known as the loudspeaker. The receiver then converts the electrical signals into the acoustic signals that are heard by the user.

The Hearing Aid’s Small computer

  • Almost all hearing aids now a days are digital. Digital hearing aids have a small computer inside of them that is programmed to help manipulate the signals to fit the hearing loss of the individual user.  Some hearing aids are even equipped with special control functions for individual adjustments, depending on the listening environment. Many hearing aids offer a remote control feature, which helps making adjustments to your hearing device easier, especially for users with dexterity problems.

Hearing Aid Battery

  • The special batteries that are required by all hearing aids come in many different sizes and with varying power capacities. A standard hearing aid battery should last between 5 and 14 days. It all depends on the type of hearing aid, the capacity, type of hearing aid battery, and how much the hearing aid is used.

Go to the Next Topic >>>

<<< Go back to the Previous Topic

<<< Go back to the Hearing Loss & Hearing Aid Guide

Last Updated: Dec 18, 2013