See Frequency Modulation system.
Food and Drug Administration (FDA)
This is the government agency responsible for approving and regulating drug use in the USA.
Footplate
The base of the tiny stirrup (stapes) bone which rests on the oval window in the middle ear.
Frequency
The unit of measurement related to the pitch of sound. It is the number of cycles or number of complete vibrations in one second. Frequency is now expressed in Hertz (Hz). (It used to be expressed in cycles per second [CPS].) The more cycles per second, the higher the pitch. Human ears normally can hear sounds […]
Frequency Modulation System (FM)
A wireless assistive listening device that picks up a speaker’s voice through a microphone and transmits it, using radio waves, to a person wearing a corresponding FM receiver. The device effectively moves the speaker’s mouth right up to the hard of hearing person’s ears thus removing background noise and distance problems.
Frequency Response
The range of frequencies to which a hearing aid can respond, adjusted to your degree of hearing loss.