Rear/Reag Measurements - Interacoustics Affinity 2.0 Additional Information

2.6.2

REAR/REAG measurements

REAR (Real-Ear Aided Response): The REAR accounts f or the SPL across f requencies f or a given signal
measured in the ear canal with the hearing aid in place and turned on.
REAG (Real-Ear Aided Gain): The REAG accounts f or the gain across f requencies f or a given input signal
measured in the ear canal. This is obtained by subtracting the input level f rom the REAR.
The REAR/REAG is used in the calculation of REIG (Real-Ear Insertion Gain). Furthermore, some f itting
prescriptions (such as DSL m[i/o] ) prescribe REAR/REAG targets f or some input levels. If the audiogram
has been converted f rom dB HL to dB SPL and uses a SPL-O-GRAM, it can quickly be determined whether
an input is audible or not.
Test procedure:
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1) Open the REM440 module by selecting the REM tab.
2) If needed select a test protocol in the List of Protocols. If you do not select a protocol the system
will automatically select a standard protocol.
3) Explain the procedure to the client.
4) Perf orm an otoscopic examination.
5) Mount the probe tube on the in-situ headset and place it on the client who should be seated ½-1
meters f rom the speaker.
Ensure that the probe tubes are calibrated bef ore placing them in the ear canal (see section 0 about
tube calibration).
6) Caref ully insert the hearing aid without moving the probe tube. Ensure that the instruments are
switched on.
7) If f itting an open hearing aid, perf orm Calibrate for open fit (see section 0).
8) Click on the REAG/REAR button if it is not already marked automatically.
A right click on REAG/REAR button allows you to enter the Settings menu or Change colour of the
curve.
D-0004576-Q – 2022/05
Affinity/Equinox2.0 – Additional Information
REAR – input = REAG
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