WORDS TO KNOW

The links below are to an alphabetical glossary of words and terms which you may find useful as you help your child and build your child's team.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Glossary -- F

feedback - the shrill whistling sound made when amplified sound from the hearing aid receiver goes back into the microphone of the hearing aid. Feedback can be caused by an earmold that does not fit properly, a damaged hearing aid, and/or cerumen in the ear canal.

FM system - an assistive listening device that improves listening in noise. Signals are transmitted from a talker to the listener by FM radio waves.

frequency – is the unit of measurement related to the pitch of a sound. Frequency is expressed in Hz (Hertz) or cps (cycles per second). The more cycles per second, the higher the pitch.

functional gain - the difference in a person's responses between aided and unaided threshold measures. Functional gain is less reliable and valid than other methods of testing aided benefit.