The Hearing Aid
Hearing Aids can be classified as either digital or analog. Although the physical appearances between the two are subtle, the quality is not. Digital hearing aids are far superior to analog hearing aids, but are also much more expensive.
A variety of hearing aids
The Analog Hearing Aid
Analog hearing aids are very simple devices. They are meant mainly for people that experience volume loss in their hearing impairment, not quality loss. Analog hearing aids merely amplify sound in order to make it more audible for people who are hard of hearing. These hearing aids can only be adjusted for basic settings such as bass, treble, and volume.
A person with an analog hearing aid. Go back to top of page Go back to Present Technology Page
The Digital Hearing Aid
Digital hearing aids are more complex than analog hearing aids. They are for people who experience loss of quality in sound due to their hearing impairment. Digital aids are far more advanced than analog. The sound travels through computer chips, which separate the frequencies of the sound. The sound is then processed to filter background noise and altered in other ways specific to a persons needs. The signal is amplified in a tiny speaker at the other end of the hearing aid.
An example of a digital hearing aid Go back to top of page Go back to Present Technology Page