Glossary of Terms for the FONIX 7000 201
INTER- Distortion generated by the faulty mixture of different input frequencies.
MODULATION This is a primary cause of harshness and lack of intelligibility in a
DISTORTION hearing aid.
INVALID In the Multi-Curve Option, this word appears when there is no curve
stored in a selected memory location.
JIS Japanese Industrial Standard. The organization which sets standards for
measurements in Japan.
KEMAR Knowles Electronics Manikin for Acoustic Research. Model, which
nearly reproduces the acoustic qualities of an average adult head and
torso, that is utilized in the assessment of hearing aid performance.
LED Light Emitting Diode. A small pilot light on an instrument panel.
LEVELING An automatic calibration procedure, establishing a “zero line” for
measurements, taking into account all the acoustic properties of the test
chamber or the testing room.
MENU A list of choices offered by a computer.
MULTI-CROS A hearing aid system that has a switch to select either a CROS, a BI-
CROS, or a Monaural arrangement.
MZ COUPLERS Modified Zwislocki Couplers. Three couplers based on the Zwislocki
design, but sturdier; provided with the OES option.
NAL National Acoustic Laboratories of Australia.
NBS National Bureau of Standards (U.S.), now known as National Institute
of Standards and Technology.
NOISE The 7000’s method of producing a more stable reading by averaging
REDUCTION many samples.
OCCLUDED A frequency response measured inside the ear canal with the hearing aid
RESPONSE earpiece in place, but with the hearing aid turned off. This is a
measure of how much unamplified sound leaks into the ear through the
earpiece (such as with an open fitting). When measured in a real ear (as
opposed to a manikin), it is called the “Real Ear Occluded Response”
(or “REOR”).
OCCLUSION Low-frequency intensification in the loudness level of bone-conducted
EFFECT signals resulting from the blocking of the ear canal.
OES Occluded Ear Simulator. An option on the 7000, using three special
couplers, that provides the same data obtained with a standard ear
simulator.
POGO Prescription Of Gain and Output. A hearing aid prescription formula.
