Audioscan Verifit 2 Manuel d'utilisateur

Audioscan Verifit®User's Guide 4.2© June 2015

Verifit®User's Guide Version 4.2 © June 2015Test BoxHearing instrument test (HIT) acoustically-treated binaural test box which houses a telecoil

Verifit®User's Guide Version 4.2 © June 2015Positioning a RIC instrument for ANSI tests 100

Verifit®User's Guide Version 4.2 © June 201516 ANSI Hearing Aid TestsThese tests follow the procedures of the ANSI S3.22-2003 standard:Linear: A

Verifit®User's Guide Version 4.2 © June 2015result in the lowest compression threshold, a flat I/O curve and the longest attack/release times. Th

Verifit®User's Guide Version 4.2 © June 2015provided in ANSI S3.22. 1. Click the right mouse button to raise the home menu, then select [Input/Ou

Verifit®User's Guide Version 4.2 © June 2015WARNING: Keep magnet out of reach of children and pets. If a magnet is swallowed seek immediate medic

Verifit®User's Guide Version 4.2 © June 2015 1. First, complete an ANSI [Linear] or [AGC] test. 2. Click the right mouse button to raise the home

Verifit®User's Guide Version 4.2 © June 2015 Telecoil test results106

Verifit®User's Guide Version 4.2 © June 201517 Other Test Box MeasuresIn addition to the tests of ANSI S3.22, the Verifit also provides the foll

Verifit®User's Guide Version 4.2 © June 2015 6. Click to capture the comparison curve once the noise reduction function has responded. Directi

Verifit®User's Guide Version 4.2 © June 2015 Directional BTE positioningEnsure that the left hearing instrument is tested on the left coupler an

Verifit®User's Guide Version 4.2 © June 2015Component Description0.4cc wideband couplers that are attached to the binaural coupler microphoneHA-1

Verifit®User's Guide Version 4.2 © June 2015 Test box directional procedureTo test directional function in the test chamber: 1. Mount the hearin

Verifit®User's Guide Version 4.2 © June 2015To test directional function in situ, see On-Ear Instrument Measures Multicurve procedureMulticurve

Verifit®User's Guide Version 4.2 © June 2015Spectral analysis in MulticurveSelecting a stimulus level of 0 dB (off) in [Multicurve] presents a sp

Verifit®User's Guide Version 4.2 © June 2015 5. Click [Start test]. Test setup instructions will be displayed. 6. Click to start the test. 7. C

Verifit®User's Guide Version 4.2 © June 2015 Sound level meter using manual controlWhen set for a stimulus level of 0 dB (off), the Manual contr

Verifit®User's Guide Version 4.2 © June 2015extension cables should not be used. They will substantially increase noise levels.115

Verifit®User's Guide Version 4.2 © June 201518 NetworkingConnecting the Verifit to a network allows for transferring data be

Verifit®User's Guide Version 4.2 © June 2015(a) Select [Change] to set [Network] to the Wired option.(b) In most cases, your network will suppor

Verifit®User's Guide Version 4.2 © June 2015(a) Simply enable [Auto].(b) Click [Test settings] to test your settings.(c) If the test is successfu

Verifit®User's Guide Version 4.2 © June 2015Do not change the Remote Operation port unless requested by your network administrator. Changing the

Verifit®User's Guide Version 4.2 © June 2015Component DescriptionTRIC adapters (Thin-tube, Receiver In Canal) designed for use with 0.4cc and HA-

Verifit®User's Guide Version 4.2 © June 2015 3. Click . 4. You will be prompted to restart the equipment. Click to restart, or click to ent

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Verifit®User's Guide Version 4.2 © June 201519 Single Computer ConnectionMost office computers today are already connected to a netw

Verifit®User's Guide Version 4.2 © June 2015255.255.255.0 in the Subnet mask box.6. On the Verifit, un-check Auto on the Setup network screen and

Verifit®User's Guide Version 4.2 © June 201520 Printing and Storing ResultsThe Verifit can print results for future reference, as well as store

Verifit®User's Guide Version 4.2 © June 2015button. To test your selected options, click the [Print test page] button. Printer connectionWhen

Verifit®User's Guide Version 4.2 © June 2015 Printer typesYou must select the printer type for the connected printer. Most laser printers and la

Verifit®User's Guide Version 4.2 © June 2015In this case, you need to define a Custom printer. Please contact Audioscan for assistance. We can he

Verifit®User's Guide Version 4.2 © June 2015Printing page setup! NOTE: If a printout or session file identifies the printed or saved data as belo

Verifit®User's Guide Version 4.2 © June 2015To test your selected options immediately, click the [Print test page] button. The test page includes

Verifit®User's Guide Version 4.2 © June 2015ER3-14A and ER3-14B foam eartips (package containing 5 of each) Associated items and suppliesVA-111

Verifit®User's Guide Version 4.2 © June 2015The Verifit automatically scans for the available domains, computers and shares. To

Verifit®User's Guide Version 4.2 © June 2015 Network printerIf your chosen printer connects directly to the local area network through its own n

Verifit®User's Guide Version 4.2 © June 2015 Session setupThe Verifit itself does not store data. All entered and measured data are lost when yo

Verifit®User's Guide Version 4.2 © June 2015 Storing and restoring session filesYou can save a session file at any time by clicking [Session] .

Verifit®User's Guide Version 4.2 © June 2015Excel. To view a session file Excel, right click on the file and select Open With. Choose a browser p

Verifit®User's Guide Version 4.2 © June 201521 TroubleshootingThis section covers common problems encountered when using the Verifit. If you req

Verifit®User's Guide Version 4.2 © June 2015 Inconsistent levels in speech stimulusThe speech stimulus changes in level and/or spectrum from loo

Verifit®User's Guide Version 4.2 © June 2015instrument flush with the inside of the 2cc volume.• Ensure that the test box is sealed tightly.• Ens

Verifit®User's Guide Version 4.2 © June 2015This message may be displayed during the test box calibration procedure. It i

Verifit®User's Guide Version 4.2 © June 2015 Sound-field speaker overdrivenSound-field speaker overdriven! or External sound-field speaker overd

Verifit®User's Guide Version 4.2 © June 2015WARNING: To ensure that the operation of this product is not affected by EMC emissions from other pro

Verifit®User's Guide Version 4.2 © June 201522 Technical SpecificationsSpecifications subject to change without noticeEnvironmental conditionsST

Verifit®User's Guide Version 4.2 © June 2015Test BoxWorking Space WxHxD...28.0x7.5x12.3 cm...

Verifit®User's Guide Version 4.2 © June 2015Reference Test GainFrequency ResponseFrequency RangeMaximum OSPL90Harmonic DistortionAttack & Rel

Verifit®User's Guide Version 4.2 © June 2015On-EarSpeakers (ducted port)...2...

Verifit®User's Guide Version 4.2 © June 2015Manual measurement of output, gain and distortionFITTING METHODS AVAILABLESpeechmap with...

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Verifit®User's Guide Version 4.2 © June 201523 GlossaryABR, Auditory Brainstem Response, The auditory brainstem response (ABR) test gives infor

Verifit®User's Guide Version 4.2 © June 2015FM System, an assistive listening device consisting of a microphone, an fm ra

Verifit®User's Guide Version 4.2 © June 2015OSPL90 (output SPL for 90-dB input SPL), The SPL developed in a 2cc coupler when the input SPL is 90

Verifit®User's Guide Version 4.2 © June 2015should be verified as normal in this configuration.• Portable and mobile RF communications equipment

Verifit®User's Guide Version 4.2 © June 2015REUR, Real-ear Unaided Response, SPL (or BSPL), as a function of frequency, at a specified measuremen

Verifit®User's Guide Version 4.2 © June 2015TRIC: Thin-tube Receiver In-the-Canal style of hearing instrumentUCL, Uncomfortable Listening L

Verifit®User's Guide Version 4.2 © June 201524 ReferencesANSI S3.5, Methods for Calculation of the Speech Intelligibility Index, 1997ANSI S3.6,

Verifit®User's Guide Version 4.2 © June 2015Feigin, J.A., Kopun, J.G., Stelmachowicz, P.G. & Gorga, M.P. (1989). Probe-tube microphone m

Verifit®User's Guide Version 4.2 © June 2015Rehabilitative Audiology Monograph, XXVII.Seewald, R.C. (1994b). Fitting children with the DSL metho

Verifit®User's Guide Version 4.2 © June 201525 Appendix 1 Manufacturer Disclosure Statement for Medical Device Security155

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Verifit®User's Guide Version 4.2 © June 2015Systems, Inc.Acknowledgments:DSL 5.0 is used under license from Western University

Verifit®User's Guide Version 4.2 © June 2015 EC Declaration of Conformity17

Verifit®User's Guide Version 4.2 © June 2015 Electronic User’s GuideYou can download the current User's Guide directly from www.audioscan.c

Verifit®User's Guide Version 4.2 © June 2015When using the equipment to measure the WRECD or RECD in small ear canals, it is possible to induce a

Table of Contents1 About Verifit...

Verifit®User's Guide Version 4.2 © June 20152 Getting StartedThis section provides instructions for unpacking the Verifit and connecting various

Verifit®User's Guide Version 4.2 © June 2015 Text box cable provided uses HDMI connector, but is distinguished by a di

Verifit®User's Guide Version 4.2 © June 2015 2. Connect the probe microphones to the left (blue) and right (red) connectors on the bottom

Verifit®User's Guide Version 4.2 © June 2015 5. The probe dock can be attached to the main display unit via the magnet mount.NOTE: A coupler mic

Verifit®User's Guide Version 4.2 © June 2015should be regularly wiped down with alcohol wipes.Hearing instruments should be cleaned prior to intr

Verifit®User's Guide Version 4.2 © June 2015 3. Verifying program settings and their notification beeps 4. Demonstrating hearing aid features to

Verifit®User's Guide Version 4.2 © June 2015the left and right sides of the headphones. You can optionally focus your listening attention by sele

Verifit®User's Guide Version 4.2 © June 2015Display unit rear connector panelWARNING: To avoid the risk of electrical shock, any line-powered per

Verifit®User's Guide Version 4.2 © June 20153 General OperationThis section describes the use of a mouse or connected USB keyboard to control th

Verifit®User's Guide Version 4.2 © June 2015The functions of the screen icons and connected keyboard keys are explained in the following table:29

Verifit®User's Guide Version 4.2 © June 2015On-ear or Test box mode...

Verifit®User's Guide Version 4.2 © June 2015Screen icon Function KeyboardContinue. Proceed from current stateCancel. Revert to previous state [

Verifit®User's Guide Version 4.2 © June 2015Inserting the cable for a wired network connection Printer connectionThe Verifit can use print

Verifit®User's Guide Version 4.2 © June 2015 Menus, lists and buttonsButtons containing descriptive text perform an action like opening a pr

Verifit®User's Guide Version 4.2 © June 20152.Click on [Software Updates] and fill in the requested information.3.Double-click the downloaded sof

Verifit®User's Guide Version 4.2 © June 20154 General SetupThis section covers Date and Time setup, Display settings (including mouse pointer sp

Verifit®User's Guide Version 4.2 © June 2015 2. Click [Save test setups on erase data to toggle between Yes and No.35

Verifit®User's Guide Version 4.2 © June 20155 On-Ear Measures - SetupFor accurate, repeatable measurements, the Verifit must be properly set u

Verifit®User's Guide Version 4.2 © June 2015of the client’s head. This speaker will be automatically used for the on-ear directional test. On-ea

Verifit®User's Guide Version 4.2 © June 2015Position the probe tip over the reference microphoneHold probe dock with microphone to be calibrated

Verifit®User's Guide Version 4.2 © June 2015 Calibration check for probe moduleThe calibration curve for the probe module is a comparison of the

Verifit®User's Guide Version 4.2 © June 2015Test box screen...

Verifit®User's Guide Version 4.2 © June 2015 Max TM SPL setupThe Max TM SPL safety feature allows you to set a limit on the SPL, measured by the

Verifit®User's Guide Version 4.2 © June 2015 1. Choose a quiet location and position the client and the sound-field speaker at least 1.5 m (5 fee

Verifit®User's Guide Version 4.2 © June 2015 Probe dock positioned, clipped to client clothing, adjust clip holding probe microphone mod

Verifit®User's Guide Version 4.2 © June 20156 On-Ear Measures Screen SetupTo accommodate your working preferences, the appearance of On-ear meas

Verifit®User's Guide Version 4.2 © June 2015Hiding a curve does not erase it. To erase curves click on and select one of the Erase options.To h

Verifit®User's Guide Version 4.2 © June 20157 SpeechmapSpeechmap presents hearing threshold, UCL and amplified speech spectra as SPL in the ear

Verifit®User's Guide Version 4.2 © June 2015ear canal SPL that should never be exceeded. 5. Broadband output limiting targets are not provided.

Verifit®User's Guide Version 4.2 © June 2015 Camfit in SpeechmapCamfit is an approach to fitting hearing aids developed by Brian Moore at the Un

Verifit®User's Guide Version 4.2 © June 2015Right click and select , then click [Speechmap].The available Speechmap stimuli are in two columns.

Verifit®User's Guide Version 4.2 © June 2015 Screen tour - unaided screen1. Max TM SPL (change this in Setup), 2. Estimated UCL, 3. Unaided

Verifit®User's Guide Version 4.2 © June 2015HP printer...

Verifit®User's Guide Version 4.2 © June 2015 Screen tour - aided screen1. Estimated UCL, 2. 90dB target (for tones), 3. Result of test 3 (MPO),

Verifit®User's Guide Version 4.2 © June 2015It is suggested that hearing instruments be preset in Test box mode with fine tuning done in On-ear m

Verifit®User's Guide Version 4.2 © June 2015 2. Format the USB stick for data using the Audioscan Updater. 3. Create digital sound files that are

Verifit®User's Guide Version 4.2 © June 2015multiple USB sticks or organize your files into folders, moving them into the top level directory of

Verifit®User's Guide Version 4.2 © June 2015Example of user-supplied files, user.wav, user_-4.wav and user_+2.5.wav.54

Verifit®User's Guide Version 4.2 © June 20158 Speechmap Fitting ProceduresThe Speechmap fitting screen provides a number of choices for inputtin

Verifit®User's Guide Version 4.2 © June 2015 5. RECD: Real-ear to coupler difference. Unless otherwise indicated, RECD is the difference between

Verifit®User's Guide Version 4.2 © June 2015 Data entryThreshold data and other audiometric parameters may be entered manually

Verifit®User's Guide Version 4.2 © June 2015After completion of a test, the chosen stimulus type and level will become the default. To change thi

Verifit®User's Guide Version 4.2 © June 2015Upon completion of a test recording, a colored Aided Audibar shows the SII for the aided average spee

Verifit®User's Guide Version 4.2 © June 20151 About VerifitThis section provides a listing of features new in this software release, describes t

Verifit®User's Guide Version 4.2 © June 2015 4. In On-ear mode, advise the client to point to the screen if a sound becomes too loud during the t

Verifit®User's Guide Version 4.2 © June 2015the instrument on and follow the fitting procedures presented previously in this section. It is nece

Verifit®User's Guide Version 4.2 © June 20151. LTASS Speech-std(F), 2. LTASS Speech4000, 3. LTASS Speech5000, 4. LTASS Speech6300 Binaural fitti

Verifit®User's Guide Version 4.2 © June 2015 7. Click to stop the test without recording any test data. 8. In Test box mode, all stimuli are av

Verifit®User's Guide Version 4.2 © June 2015 6. Click in test 2 to start test and obtain a response using [Pink noise] at Soft (55). Adjust the

Verifit®User's Guide Version 4.2 © June 2015 Tele-test fitting and verification in SpeechmapWARNING: The included magnet may effect some medical

Verifit®User's Guide Version 4.2 © June 2015 FM fitting and verificationFM Offset or FM Transparency method in Speechmap (after Platz 2004)It is

Verifit®User's Guide Version 4.2 © June 2015/sh/. They also may support phonemic analysis of hearing aid responses. They are not meant to replace

Verifit®User's Guide Version 4.2 © June 20159 Speechmap Technical DetailsThe following sections outline the principles underlying Speechmap stim

Verifit®User's Guide Version 4.2 © June 2015A tone burst (MPO) stimulus provides 128 ms bursts with 128 ms gaps at 1/3 octaves with a level of 90

Verifit®User's Guide Version 4.2 © June 2015Component DescriptionExternal power supply connected to a hospital grade power cord (in North

Verifit®User's Guide Version 4.2 © June 20151/3 octave band SPL Add to band SPL forSpeechHz Calibrated Female ChildICRANoisePinkNoiseLoudOwnVoice

Verifit®User's Guide Version 4.2 © June 2015Microphone Location Effects Deep InsertionAdd to all stimuli in test box mode Add to Est. Canal SPLHe

Verifit®User's Guide Version 4.2 © June 201510 On-Ear Instrument MeasuresA number of the tests covered in Test box measures can also be performe

Verifit®User's Guide Version 4.2 © June 2015over a 15 – 45 second period. For a noise-reducing instrument, both curves may chan

Verifit®User's Guide Version 4.2 © June 2015 3. Select a stimulus type from the list box. 4. Select a stimulus level from the list box. 5. Click

Verifit®User's Guide Version 4.2 © June 2015 4. Click the Filter window, then select 1/12th octave, A-weighted, or C-weighted from the drop-down

Verifit®User's Guide Version 4.2 © June 201511 WRECD measurementThe WRECD (Wideband Real-Ear to Coupler Difference) may be ind

Verifit®User's Guide Version 4.2 © June 2015 2. Select the WRECD coupling method that will be used on the ear. Audioscan software supports both

Verifit®User's Guide Version 4.2 © June 2015 WRECD results The WRECD measurement screen shows the response of the WRECD transducer in the 0.4c

Verifit®User's Guide Version 4.2 © June 2015foam tip, they will be based on average earmold tubing.For Test box Speechmap involving BTE instru

Verifit®User's Guide Version 4.2 © June 2015Component DescriptionWRECD transducer used to measure the wideband real-ear to coupler difference

Verifit®User's Guide Version 4.2 © June 2015 WRECD factsIndividual RECD values are derived by comparing the SPL produced by a sound source in th

Verifit®User's Guide Version 4.2 © June 201512 Occlusion Effect TestThe occlusion effect refers to the unnatural sound of one’s own voice that r

Verifit®User's Guide Version 4.2 © June 201513 Sensory loss simulatorThis sensory loss simulator (SLS) is intended to allow normal-hearing liste

Verifit®User's Guide Version 4.2 © June 2015 9. Click [Type of loss] to toggle between [Sensorineural] and [Conductive] hearing loss simulations

Verifit®User's Guide Version 4.2 © June 201514 Insertion GainInsertion gain is the difference between aided and unaided ear canal SPL (REIG = RE

Verifit®User's Guide Version 4.2 © June 20151. Speech Intelligibility Index (SII), 2. SII for target, 3. Fitting method, 4. Target REIG, 5. REUR,

Verifit®User's Guide Version 4.2 © June 20151. Speech Intelligibility Index (SII), 2. SII for target Aided Threshold, 3. Fitting method, 4. Speec

Verifit®User's Guide Version 4.2 © June 2015 2. Select [Transducer], then choose from the list. 3. Click [REUR] to toggle selection.Measured REUR

Verifit®User's Guide Version 4.2 © June 2015The Average REUR used is shown above. Measured REUR will vary from this.For small children the peak m

Verifit®User's Guide Version 4.2 © June 2015the listener. There is considerable individual variability in relating the SII to speech

Verifit®User's Guide Version 4.2 © June 2015Component DescriptionTele-test handset used to provide an inductive stimulus for simulating operation

Verifit®User's Guide Version 4.2 © June 201590

Verifit®User's Guide Version 4.2 © June 201515 Test Box Measures - SetupThe appearance of test box screens may be changed in several ways. Most

Verifit®User's Guide Version 4.2 © June 201592

Verifit®User's Guide Version 4.2 © June 2015 FormatExcept for Distortion, Input/Output and Manual control screens, you have th

Verifit®User's Guide Version 4.2 © June 2015Hiding a curve does not erase it. To erase curves click and select one of the Erase data options.To

Verifit®User's Guide Version 4.2 © June 2015Click on to save your selections. Test box calibration factsTest box microphone calibration

Verifit®User's Guide Version 4.2 © June 2015curve. Any change in this curve indicates a drift in either the coupler or the reference microphone w

Verifit®User's Guide Version 4.2 © June 2015When connecting the couplers onto the binaural coupler microphone, it is important that they produce

Verifit®User's Guide Version 4.2 © June 2015microphone opening of the hearing instrument without touching it. Ensure the reference microphon

Verifit®User's Guide Version 4.2 © June 2015For health reasons, hearing instruments should be clean before putty is applied and putty should be r