Oticon Rem autofit User manual

REM

AutoFit with

Verit®LINK

Quick Guide

Before using REM AutoFit with VeritLINK

REM AutoFit with

Verit®LINK Quick Guide

Quick, accurate and automatic verification with

your Verifit.

What is REM AutoFit?

REM AutoFit is a tool in Genie 2 that allows the

HCP to match real ear targets automatically. This

makes the real ear measurement (REM) process

more efficient whilst ensuring the HCP maintains

quality and control over the fitting. REM AutoFit

is compatible with any REM systems that are

compliant with IMC 2 (Inter Module Communication

protocol 2) which includes Interacoustics, MedRx,

Otometrics, Sivantos and Auditdata systems.

Oticon offers automatic target matching with

Verifit1* or Verifit2 using Audioscan’s VerifitLINK.

Using REM AutoFit with VerifitLINK, it is possible

to automatically match targets at 3 input levels

within 2 minutes 30 seconds. Furthermore, from

Genie 2 |2021.2 , it is possible to launch Audioscan’s

ProbeGUIDE™ directly from REM AutoFit, to ensure

the right probe tube placement, before

measurement. This guide provides step-by-step

support through the REM AutoFit process when

used with your Verifit system.

Why do audiologists perform real

ear measurements?

The main reason is to verify that speech sounds

are audible and comfortable for the client. Ensuring

that targets for a chosen rationale are being met

is a good starting point for a new fitting.

Real ear measurements must therefore be

consistent, reliable, repeatable, and correct.

The first time you use REM AutoFit with

VerifitLINK (you need to do this only once):

• Ensure you have software version 3.22 or

later for Verifit1, or 4.14 or later for Verifit2

(4.18 or later is required for simultaneous

binaural measurements)

• You must have a network connection between

the Verifit and your computer. If you are already

using the Verifit NOAH module, you have the

necessary network connection. If you do not

have a network connection, refer to your Verifit

user guide or contact your Verifit distributor or

local IT support to set it up. See also Audioscan’s

Quick Guide to Verifit Network Setup‒for

network/IT professionals.

• On the Verifit, open the Setup network

screen (or in the main test menu screen on the

Verifit 2) and note your Verifit’s network

address (IP address normally in a format such

as XXX.XX.X.XXX).

• Open Genie 2 and in the Preferences top menu,

click Edit Preferences. In the navigation bar on

the left, click Customize software and then click

the Measurement module tab. Go to REM AutoFit

settings and select VerifitLINK.

• In the VerifitLINK box below, enter your Verifit’s

IP address.

Every time you use the tool you must

ensure that:

• you have chosen the correct acoustics and

fitting levels according to your client’s

audiogram. Also make sure you have entered

these choices in the Acoustics tool and

Selection screen respectively in Genie 2.

• the Verifit has a valid microphone calibration.

Check your local protocol to learn how often to

carry out microphone calibration.

• the maximum eardrum SPL in the Verifit is set

to a safe level according to your client’s

audiogram and predicted or measured UCLs.

• program linking is set up as desired in Genie 2.

REM AutoFit with VerifitLINK adjusts the

hearing aids to match targets in P1

We strongly recommend that you run a feedback

analysis before starting. We also recommend that

you use the same fitting rationale in REM AutoFit

with VerifitLINK and Genie 2.

* S/N 2070 and higher

Settings in other tools

The following controls are set automatically when REM AutoFit with VerifitLINK

is open and restored to their original states afterwards:

Adaptation Manager Step 3

Noise reduction Current setting in OpenSound Navigator™

Feedback Analyzer On

Directionality setting Pinna Omni. For styles with a single

microphone, directionality is not applicable.

Speech Rescue Off

Step-by-step Guide

On the Fitting step in Genie 2, enter the REM tool from the More Tools menu

in the left taskpane. Launch REM AutoFit with VerifitLINK by clicking the

VerifitLINK button at the bottom of the REM tool.

Step 1: Setup

1. Select a Measurement method from the drop-down list:

On ear or Test box

2.Select a Fitting rationale. You can use all available fitting rationales

on the Verifit, except Camfit.

3.Select a Signal type. You can use all the speech signals designed for

target matching in the Verifit

4.Select a RECD source:

•To use Verifit measured, be sure to make the RECD measurement

on the Verifit before opening REM AutoFit with VerifitLINK. To use a

previously measured RECD, enter data in the Genie 2 RECD tool and

select Genie 2.

•To use Genie 2, be sure to select the desired measurement in the

RECD tool before opening REM AutoFit with VerifitLINK. You can

import a measured RECD into the RECD tool from NOAH.

5.Prepare for the measurements by following the instructions to the

right of the screen. These instructions are specific to the measurement

method you have selected.

•One of the instruction points contains a link to open ProbeGUIDE on

the Verifit2.

•When this link is opened a small popup appears in Genie 2 where it is

possible to start the ProbeGUIDE measurement for each ear. A graphic is

shown on the Verifit2 screen showing an ear and ear canal. As you insert

the probe tube, on the ear canal graphic an indicator ball will show the

position of the end of the probe tube. The marker and chime will show

that the placement is correct.

It is now possible to proceed with the measurement.

Step 2: Measure

Note that for simultaneous binaural measurements, Audioscan recommends

that the client is a distance of 45–60 cm (18–24 in.) from the loudspeaker.

All measurements use the signal type selected in step 1: Setup. Each

sequence of measurements is preceded by a sound field equalization burst.

In on-ear mode, the instruments will mute automatically prior to the sound

field equalization burst. This ensures that, when the instruments are

automatically unmuted, the subsequent measurements are accurately

calibrated because the soundfield calibration was not affected by acoustic

leakage. This method is suitable for both open and closed fittings, but it is

important that your client remains still during each measurement sequence.

For test box mode, the instruments are not muted during the sound field

equalization burst as the venting is occluded upon attachment to the coupler.

Open fittings cannot be verified in test box mode.

In the Measure step, there are two ways of performing verification

measurements: Automatic and Manual.

Automatic: measures the current instrument output, automatically adjusts

it to match the prescribed target, and then performs another measurement to

confirm the target match.

a. The automatic measurement process is carried out at 65 dB by default

and you can select additional levels (50 dB and 75 dB). Gain adjustments

are based on the 65 dB measurement.

b. If performing on-ear measurements, instruct your client to face the

loudspeaker and to remain still during each sequence of measurements.

c. Click Start on the relevant side to measure one side. Click Both to

measure both sides (binaurally). Binaural measurements take place

simultaneously if using Genie 2 | 2019.2 and Verifit2 with software

version 4.18 or later. Otherwise they take place sequentially.

d. When doing simultaneous binaural measurements, if the signal reaching

left and right reference microphones is not equal, e.g. due to the client

not facing the speaker, the measurement will be paused and Verifit2’s

Binaural Sound Field Assist tool will show instructions on the Verifit2

screen to help balance the signal reaching left and right.

e. The test signal will turn off automatically when the measurements are

complete. If you need to stop the measurement prior to completion,

click Stop.

f. If you are satisfied with the measurements, proceed to step 3: Finish.

If you want to perform further fine-tuning, repeat the automatic

measurement, or click the Manual tab to perform a manual measurement.

Note that if you repeat the automatic process immediately, an initial

measurement will not be done.

Manual: lets you fine-tune the instrument gain to get even closer to target

or to personalize the fitting based on your client’s comments. This manual

process can be done after or instead of the automatic process.

Within the REM AutoFit tool, use the fine-tuning controls to adjust the

gain and then manually run a measurement to verify the target match.

a. Select the desired measurement level(s) and MPO, if necessary.

Measurements take place in a sequence for all selected levels starting

with the softest. We recommend that you run MPO as a separate mea-

surement so you can prepare the client for louder levels.

b. If performing on-ear measurements, instruct your client to remain still

during each sequence of measurements.