What is a hearing aid?

A hearing aid makes sounds louder (amplifies). While hearing aids may amplify some types of sounds more than others, at this time they cannot be made or programmed to amplify only one type of sound, such as a voice. Hearing aids do not restore normal hearing, but they may help people with hearing loss function and communicate more easily.

What should I do if I think I need a hearing aid?

If you think you have a hearing problem and are thinking about getting a hearing aid, see your doctor. If your doctor thinks you may need a hearing aid, another type of specialist (audiologist) can help determine what type of hearing aid will work best for you. The audiologist will pick a hearing aid based on the type and how much hearing loss you have and other factors. He or she can help you learn how to get the most out of your hearing aid. In general, it usually is better to wear hearing aids in both ears, even if the hearing loss in the ears is not equal.

You also need to consider cost. Hearing aids can be expensive, and they are not always covered by insurance. Be sure to ask about a return policy, in case you are not satisfied with the hearing aid, and any warranties.

What are the different types of hearing aids?

Hearing aids differ in how they look, their size, where they are placed in the ear, and how much they can amplify sounds. All hearing aids consist of:

• A microphone, to pick up sound.
• An amplifier, to make the sound louder.
• A speaker, to deliver the sound into the ear.
• Batteries, to power the hearing aid.

See a picture of the parts of a hearing aid.

The size of a hearing aid is not a good indicator of its sound quality.

There are three major types of hearing aids:

• Analog adjustable hearing aids are made based on your hearing tests. They amplify both speech and other sounds in the same amount. Your doctor has some flexibility in adjusting them to fit your hearing, and you generally control loudness. These are the least expensive type of hearing aids.
• Analog programmable hearing aids contain a computer chip that your doctor can program to take into account your hearing loss and how you respond to louder sounds. They can be programmed for different hearing environments, such as a one-on-one conversation or a dinner party in a restaurant. You change hearing programs by using a remote control.
• Digital programmable hearing aids can analyze the hearing environment and adjust to the sound. They allow more flexibility in programming than analog hearing aids. They are the most advanced and the most expensive type of hearing aid.