AR-I-MREMSW-5 Avant REM Speech Training Manual
Effective Date: 4/07/2014
20
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.
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 measures, the “real ear”
factors are incorporated into the results. The resulting simulated measurements provide information to
select and make adjustments to the hearing instrument and verify adjustments in the hearing instrument
test box rather than in the uncooperative client’s ear. This is particularly important in the case of children,
whose small volume ear canals enhance high frequency amplification more so than in average adults.
This is an essential consideration in determining the maximum output of the hearing instrument.
If RECD data is present, the software will display an option to choose between Ear or Coupler
measurement on all Real Ear screens where measurements in a coupler are appropriate
.
There are two ways to measure the REAR response: using an insert headphone or a hearing instrument.
If a hearing instrument is used, its volume control setting and other parameters should
remain the same
for both REAR and coupler measurements. It is also recommended to set the volume control to
moderate, and turn the compression and noise reduction circuits off.
How to perform the RECD task
First, perform the REAR task to obtain a REAR curve. This can be measured with a hearing instrument
or an insert earphone.
REAR with a hearing instrument
Adjust volume of the hearing instrument to comfortable listening level.
It is also recommended to turn the compression and noise reduction
circuits off.
Position the client less than one meter from the speaker and facing
the speaker.
Place the hearing instrument and the probe microphone tube as for all
REM measurements.
Select
START
to open the measurement type selection screen.
Choose the REAR with a Hearing Aid option.
Select
OK
to begin the test and wait until it concludes.
Summary of Contents for Avant REM Speech
Page 1: ...TRAINING MANUAL...
