Rear/Reag Measurements - Interacoustics Affinity 2.0 Additional Information

2.0
Affinity Additional Information
2.7.2

REAR/REAG Measurements

REAR (Real-Ear Aided Response): The REAR accounts for the SPL across frequencies for 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 for the gain across frequencies for a given input signal
measured in the ear canal. This is obtained by subtracting the input level from the REAR.
The REAR/REAG is used in the calculation of REIG (Real-Ear Insertion Gain). Furthermore some fitting
prescriptions (such as DSL m[i/o] ) prescribe REAR/REAG targets for some input levels. If the audiogram
has been converted from 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) Perform 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 from the speaker.
Ensure that the probe tubes are calibrated before placing them in the ear canal (see section 0 about
tube calibration).
6) Carefully insert the hearing aid without moving the probe tube. Ensure that the instruments are
switched on.
7) If fitting an open hearing aid, perform 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.
REAR – input = REAG
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