MedRx Avant REM+, Руководство пользователя

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The REAG is simply the REAR expressed as gain rather
than SPL. Selecting REAG allows you to see the gain at
each frequency for each of the REAR curves measured.
REOR measures the effect on the natural external ear
effects resulting from inserting an ear mold or a hearing
instrument, before it is turned on, into the ear canal. The
REOR is also referred to as Insertion Loss. REOR is also useful for
validating the effectiveness of venting or canal length changes to the
mold.
The Real Ear Occluded Gain (REOG) is the difference in
decibels, as a function of frequency, between SPL in the
ear canal and SPL at the reference microphone at the
entrance of the ear canal with the hearing aid in the ear and turned off.
For each REOR measurement curve, the corresponding REOG curve is
calculated and automatically plotted to the REOG screen. The REOG
function is useful in determining the acoustic seal of a hearing aid,
relative to a sound field outside the ear.
Some clients report they seem like they are “speaking in
a barrel” or “feel blocked up”. These are signs of a build ‐
up of self ‐ generated low frequency energy in the ear
canal. This excessive occlusion can be measured objectively in the
Occlusion Effect task.
The Real Ear to Coupler Difference (RECD) is used to
simulate real ear measurements by coupler measurements
and is useful when fitting children or “difficult” to fit
patients. See the section on RECD later in this manual for more detail.
The Maximum Power Output test measures hearing aid
response at high input levels. The software measures
MPO with ISTS multitalker noise played at 55dB and then
five 90dB tone bursts at the following frequencies: 500Hz, 1000Hz,
2000Hz, 4000Hz, 5000Hz.
Additional Tests & Features
Real Ear to Coupler Difference (RECD)
The Real Ear to Coupler Difference (RECD) is used to simulate real ear
measurements by coupler measurements and is useful when fitting
children or “difficult” to fit patients. RECD measurements can be
conducted outside of a Hearing Instrument Test Box when using the
optional MedRx RECD Coupler.
The RECD values are used as a correction to coupler measures for that
client’s hearing instruments. By performing all subsequent measures in
the coupler and applying the RECD corrections to the coupler