Killion, Mead C. Etymotic Research, Elk Grove Village, Illinois.
Villchur, Edgar Foundation for Hearing Aid Research, Woodstock, New York.
- Types of hearing loss
- User satisfaction
- Binaural hearing aids
- Related Primary Literature
- Additional Reading
A device that amplifies sound for someone with a hearing loss. A typical aid consists of a microphone, an electronic amplifier, an earphone (called a receiver), and a battery. The sound is coupled to the ear with an earmold. The great majority of earmolds are cast from impressions of the individual patient's ear canal, but over-the-counter and mail-order hearing aids use prefabricated earmolds, commonly offered in several sizes. In the case of in-the-ear hearing aids, all components are small enough to be contained in an earmold shell that fits within the ear canal and concha, or even within the canal alone (Fig. 1). See also: Amplifier; Ear (vertebrate); Earphones; Microphone
The content above is only an excerpt.
for your institution. Subscribe
To learn more about subscribing to AccessScience, or to request a no-risk trial of this award-winning scientific reference for your institution, fill in your information and a member of our Sales Team will contact you as soon as possible.
to your librarian. Recommend
Let your librarian know about the award-winning gateway to the most trustworthy and accurate scientific information.
AccessScience provides the most accurate and trustworthy scientific information available.
Recognized as an award-winning gateway to scientific knowledge, AccessScience is an amazing online resource that contains high-quality reference material written specifically for students. Contributors include more than 10,000 highly qualified scientists and 45 Nobel Prize winners.
MORE THAN 8700 articles covering all major scientific disciplines and encompassing the McGraw-Hill Encyclopedia of Science & Technology and McGraw-Hill Yearbook of Science & Technology
115,000-PLUS definitions from the McGraw-Hill Dictionary of Scientific and Technical Terms
3000 biographies of notable scientific figures
MORE THAN 19,000 downloadable images and animations illustrating key topics
ENGAGING VIDEOS highlighting the life and work of award-winning scientists
SUGGESTIONS FOR FURTHER STUDY and additional readings to guide students to deeper understanding and research
LINKS TO CITABLE LITERATURE help students expand their knowledge using primary sources of information