Audio Traveler AA222, Operation Manuals, Page: 109 / 141

AA222 Operation Manual Page 109
Dictionary
Acoustic Admittance:
The ease with which sound waves flow through a medium, as
the eardrum membrane. See Acoustic Immittance.
Acoustic Compliance:
Another term for Acoustic Admittance.
Acoustic Immittance:
Refers collectively to acoustic impedance and / or acoustic
admittance.
Compliance:
1) Ease with which air moves (e.g. influenced by the
eardrum and middle ear mechanism).
2) Often used to indicate the equivalent volume of air in
the middle ear.
Contra lateral Reflex:
The middle ear muscle reflex that occurs in the ear, contra
lateral to the stimulus ear.
Dynamic Acoustic Compliance:
See Dynamic Acoustic Immittance.
Dynamic Acoustic Immittance:
The acoustic immittance as observed with a continuous
change in air pressure (tympanometry) and/or during the
activation of the middle ear muscle(s) (reflex measurements)
Ear Tip: A cuff which is used to seal the probe into the external
auditory canal.
ETF:
(Eustachian Tube Function). This function is tested by trying to
force air through the Eustachian tube and then by
tympanogram recordings checking if the expected change of
middle ear pressure has occurred.