Frye FONIX 7000 - Manual (Page 206)

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FONIX 7000 Hearing Aid Analyzer
BICROS A CROS aid that has two microphones, one at each ear, sending both
signals to one ear.
BLOOMING A characteristic of pure tone testing at high levels, that typically shows
EFFECT low frequencies being amplified more than they are under normal use
conditions.
CALIBRATOR A sound generator that produces a tone at a precisely controlled
frequency and amplitude.
CHAP Computer Hearing Aid Program. A program designed to interface with
Fonix instruments in order to make the storage of information in computer files quick
and easy. The current version is known as WinCHAP.
CIC COUPLER Completely-in-the-Canal Coupler. A coupler designed to better handle
the unique acoustic qualities of completely-in-the-canal aids. Included
with the CIC Coupler is internal software which provides corrections to
increase the accuracy of CIC measurements even further.
CONCHA The major part of the acoustic effect of the pinna, contributing
RESONANCE significant energy to the External Ear Effect in the region of 5000 Hz.
COIL Abbreviation for telephone pickup coil.
COMPOSITE The FONIX test signal consisting of 79 pure tones presented
simultaneously.
CONVERSION A hearing aid prescription formula, used to convert an audiogram to a
FORMULA target curve. Common formulas are the NAL, Berger, POGO, and the
1/2, 1/3, or 2/3 Gain rules.
CORFIG Coupler Response for Flat Insertion Gain (or “correction figure”). This is
the transformation that, when added to a target insertion-gain response,
will give the target coupler response. The inverse of “CORFIG” is
“GIFROC.”
COUPLER A device that connects a test microphone to a hearing aid to provide an
accurate testing situation.
CROS Contralateral Routing of Signal. A type of hearing aid that uses a wired
or wireless system to send a signal to the opposite ear.
CRT Cathode Ray Tube. The device in a computer system that projects
information onto a display screen.
CURVE A visual diagram of a measurement using two variables. In testing
hearing aids, one variable may be frequency, shown on the horizontal
axis of the curve, and the other variable amplitude, shown on the
vertical axis of the curve.