Hearing Aids (cont.)
In this Article
- What are hearing aids?
- What are the different styles of hearing aids?
- What is the difference between analog and digital hearing aids?
- What are some features for hearing aids?
- Hearing Aids and Cell Phones
- What are the risks from the anthrax vaccine?
- What if there is a moderate or severe reaction?
- How can I learn more?
What are the Different Styles of Hearing Aids?
Analog Hearing Aids
Analog hearing aids make continuous sound waves louder. These hearing aids essentially amplify all sounds (e.g., speech and noise) in the same way. Some analog hearing aids are programmable. They have a microchip which allows the aid to have settings programmed for different listening environments, such as in a quiet place, like at a library, or in a noisy place like in a restaurant, or in a large area like a soccer field. The analog programmable hearing aids can store multiple programs for the various environments.
As the listening environment changes, hearing aid settings may be changed by pushing a button on the hearing aid. Analog hearing aids are becoming less common.
Digital Hearing Aids
Digital hearing aids have all the features of analog programmable aids, but they convert sound waves into digital signals and produce an exact duplication of sound. Computer chips in digital hearing aids analyze speech and other environmental sounds. The digital hearing aids allow for more complex processing of sound during the amplification process which may improve their performance in certain situations (for example, background noise and whistle reduction). They also have greater flexibility in hearing aid programming so that the sound they transmit can be matched to the needs for a specific pattern of hearing loss. Digital hearing aids also provide multiple program memories. Most individuals who seek hearing help are offered a choice of only digital technology these days.
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