Audioscan Axiom User Manual Page 1

Audioscan Axiom®User's Guide 1.8 May 2015

Axiom®User's Guide Version 1.8  May 2015 Electronic User’s GuideYou can download the current User's Guide directly from www.audioscan.co

Axiom®User's Guide Version 1.8  May 201520 TroubleshootingThis section covers common problems encountered when using the Axiom. If you requ

Axiom®User's Guide Version 1.8  May 2015 Test box high distortion or noiseHigh distortion and/or noise numbers in an ANSI test• There may be

Axiom®User's Guide Version 1.8  May 2015 No test box reference mic. detectedNo test box reference mic. detected!This message may be disp

Axiom®User's Guide Version 1.8  May 2015• Try using a new probe tube. Ensure it is correctly attached and positioned.• Try switching right and

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Axiom®User's Guide Version 1.8  June 201521 Technical SpecificationsSpecifications subject to change without noticeEnvironmental conditionsSTO

Axiom®User's Guide Version 1.8  June 2015... Real-Ear Insertion GainOther tests available...

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Axiom®User's Guide Version 1.8  May 201522 GlossaryAGC, Automatic Gain Control, the means by which gain is automatically controlled by the le

Axiom®User's Guide Version 1.8  May 2015obtained in less than 10 seconds, this possibility should never occur in normal practice.Power and Gro

Axiom®User's Guide Version 1.8  May 2015FOG, full on gain, gain for a 50 dB input SPL with the gain control set to maximum ANSI S3.22)Gain (in

Axiom®User's Guide Version 1.8  May 2015MPO, Maximum Power Output, the maximum SPL that a hearing aid can deliver in response to a steady nar

Axiom®User's Guide Version 1.8  May 2015REOR is used to evaluate the seal of an earmold. It is not related to the required gain of a hearing a

Axiom®User's Guide Version 1.8  May 2015uncomfortable.VGA, video graphics adapter.VC, Volume Control, a user-operated gain control.Warble Tone

Axiom®User's Guide Version 1.8  May 201523 ReferencesAAA Clinical Practice Guidelines: Remote Microphone Hearing Assistance Tec

Axiom®User's Guide Version 1.8  May 2015Hawkins, D.B., Walden, B.E., Montgomery, A.A., & Prosek, R.A., (1987). Description and validati

Axiom®User's Guide Version 1.8  May 2015characteristics for young children. Journal of the Academy of Rehabilitative Audiology, 20, 25-38.See

Axiom®User's Guide Version 1.8  May 201524 Appendix 1 Manufacturer Disclosure Statement for Medical Device Security117

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1 IntroductionThe Verit and RM500SL are full-duplex dual-chan-nel audio measurement systems designed for the testing and tting of all types of hear

Axiom®User's Guide Version 1.8  May 20152 Getting StartedThis section provides instructions for unpacking the Axiom and connecting various co

2.1 Narrow-band signals2.1.1 Sinusoidal (pure tones)Sinusoidal signals are used in the ANSI hearing aid tests, in Multicurve 2 cm3 frequency respons

2.2.2 Dual-direction pink noise signal (Verit only)This unique test signal is available in the dual-source Verit test chamber and for on-ear measur

2.2.3 Real-speech signalsReal-speech signals are provided in Speechmap for both On-ear and Test box measurement modes. Four dierent digitized speec

Figure 3: LTASS for Speechmap speech signals at average vocal eortFigure 4: LTASS for Speech-std(1), Speech4000, Speech5000, Speech6300 for the FM

Figure 5: Loud vocal eort eect in dB re nominal band levels. Nominal band levels are band levels for an overall SPL of 65 dB. This shaping is appl

In addition to these well-controlled and repeatable signals, live speech may be used as a test signal. It will, of course, be unequalized and at an u

3.1 Pink noise signal analysisAll band levels are calculated with an averaging time of 128 ms.For a linear hearing aid, a pink noise stimulus will re

The speech-reception threshold (SRT) is attained when the LTASS is at threshold (approximately - de-pending on test material and the individual). The

Figure 10: Speech is detectable but not understandable if the 99th percentile is at thresholdFigure 11: When LTASS is at threshold, SII ≈ 33% which

Figure 12: The highest SII is obtained when the entire speech envelope is above thresholdFigure 13: Level of 99th percentile for Speechmap speech sig

Axiom®User's Guide Version 1.8  May 20156. Plug the reference microphone and coupler microphone in to their respective connectors in the test

Figure 14: Level of 30th percentile for Speechmap speech signals at average vocal effortFigure 15: Dynamic range of Verit speech signals at average

Axiom®User's Guide Version 1.8  May 2015connector panel. This connector must be used if a single monitor is connected. An additional monitor m

Axiom®User's Guide Version 1.8  May 2015patient, but must not be used with multiple patients. Attempts at ultrasonic cleaning usually result i

Axiom®User's Guide Version 1.8  May 20153 General OperationThis section describes the use of a mouse or QWERTY keyboard to control the Axiom

Axiom®User's Guide Version 1.8  May 2015Print screen to an external printer or a file [Print Screen]Show menu for erasing data or exchanging d

Axiom®User's Guide Version 1.8  May 2015 Screen messages and HelpThe Title bar (top line of the display screen) informs you of the selected T

Axiom®User's Guide Version 1.8  May 20154 General SetupThis section covers Date and Time setup, Display settings (including mouse pointer spe

Table of Contents1 About Axiom...

Axiom®User's Guide Version 1.8  May 20152. Left click on [Save option] on the Setup menu.3. Left click on the Yes/No windows to enable/disable

Axiom®User's Guide Version 1.8  May 20155 NetworkingConnection to a computer network allows screen images to be printed on a network printer

Axiom®User's Guide Version 1.8  May 20151. Select [Change] to set [Network] to the Wired option.2. In most cases, your network will support a

Axiom®User's Guide Version 1.8  May 20158. Click to apply your changes.5. To assign a network address automatically using DHCP:1. Simply ena

Axiom®User's Guide Version 1.8  May 2015 Remote OperationCheck Networking requirements and connect the Axiom to your network. 1. Click and

Axiom®User's Guide Version 1.8  May 2015 NOAH Service PortConsult your Network Administrator before changing the NOAH service port. Changing

Axiom®User's Guide Version 1.8  May 2015Testing the NOAH service portThe Axiom provides the NOAH service using the HTTP protocol. Communic

Axiom®User's Guide Version 1.8  May 20156 Single computer connectionThe Axiom can be networked to a single computer with two methods,

Axiom®User's Guide Version 1.8  May 20157. Click to apply your settings.7. Click on the Test button to check that a connection has been esta

Axiom®User's Guide Version 1.8  May 20157 Printing and Storing ResultsThe Axiom can print results for future reference, as well as store resu

Axiom®User's Guide Version 1.8  May 2015ANSI test frequencies...

Axiom®User's Guide Version 1.8  May 2015select File. In either case, to select the optional components to include in the output, click the [P

Axiom®User's Guide Version 1.8  May 2015Test your selection by clicking the [Print test page] button. You will get results only if the printer

Axiom®User's Guide Version 1.8  May 2015In the HP Printer selection dialog shown above, click the [Custom] button. In the Custom dialog shown

Axiom®User's Guide Version 1.8  May 2015Printing page setup! NOTE: If a printout or session file identifies the printed or saved data as belon

Axiom®User's Guide Version 1.8  May 2015NotesTo include notes text with the printed output, enable the [Notes] checkbox and enter the text in

Axiom®User's Guide Version 1.8  May 20153. Click [Change] to enter your Windows username and password4. Click to accept the Windows Login de

Axiom®User's Guide Version 1.8  May 2015Change the folderChange the folder permissions on the serverChange the subfolderCreate the subfolder o

Axiom®User's Guide Version 1.8  May 2015 Session setupThe Axiom itself does not store data. All entered and measured data are lost when you t

Axiom®User's Guide Version 1.8  May 2015Storing session files on a USB drive requires that you simply insert the drive into any of the Axiom&a

Axiom®User's Guide Version 1.8  May 20155. Click on a session file name.6. Click to load the session data.View a session fileYou can view se

Axiom®User's Guide Version 1.8  May 2015Speechmap facts...

Axiom®User's Guide Version 1.8  May 20158 Test Box Measures - SetupFor linear and AGC tests, two completely separate sets of test results, la

Axiom®User's Guide Version 1.8  May 2015 ScaleTest results are in SPL (dB) on all screens. Hide or Show test box curvesTo hide or show test

Axiom®User's Guide Version 1.8  May 20152. Highlight the desired HFA/SPA test frequencies and Click on it to select.To change the frequencies

Axiom®User's Guide Version 1.8  May 2015Remove any coupler from the coupler microphone before calibration.1. Position the test box reference m

Axiom®User's Guide Version 1.8  May 20152. Screw the appropriate calibrator ring onto the coupler microphone.3. Insert the coupler microphone

Axiom®User's Guide Version 1.8  May 2015 Coupling the hearing instrument for Test box SpeechmapThe ANSI S3.46-2013 standard specifies RECD re

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Axiom®User's Guide Version 1.8  May 20159 ANSI Hearing Aid TestsThese tests follow the procedures of ANSI S3.22-1996 or ANSI S3.22-2003 as se

Axiom®User's Guide Version 1.8  May 2015AGC tests. ANSI 1996 Linear and AGC tests5. Refer to Test Box Measures – Setup, Coupling the hearing

Axiom®User's Guide Version 1.8  May 2015 ANSI test resultsIn 1996 tests: Full-on average gain is measured at 50 dB SPL, average gain at RTP i

Axiom®User's Guide Version 1.8  May 20151 About AxiomThis section describes the Audioscan Axiom, provides contact, warranty and

Axiom®User's Guide Version 1.8  May 201510 Other Test Box MeasuresIn addition to the tests of ANSI S3.22, the Axiom also provides the followi

Axiom®User's Guide Version 1.8  May 2015Spectral analysis in MulticurveSelecting a stimulus level of 0 dB (off) in [Multicurve] presents a spe

Axiom®User's Guide Version 1.8  May 2015measurement data is available only from 200-4000 Hz.)4. Click on the [Start test] bar to start the tes

Axiom®User's Guide Version 1.8  May 2015NOTE: Microphone extension cables (VA-131 & VA-133) are available from Audiosca

Axiom®User's Guide Version 1.8  May 201511 Sensory loss simulator Sensory loss simulator descriptionA pure conductive loss attenuates loud a

Axiom®User's Guide Version 1.8  May 20158. Click on one of the Hearing buttons to simulate the Entered loss, 1/2 Entered loss, or Normal heari

Axiom®User's Guide Version 1.8  May 201512 On-Ear Measures - SetupFor accurate, repeatable measurements, the Axiom must be properly set up

Axiom®User's Guide Version 1.8  May 20154. Hold the probe module 15 - 90 cm (6 – 36 inches) away from and directly in front of

Axiom®User's Guide Version 1.8  May 20154. Click on the [Start test] bar (which changes to [Stop test]).5. Hold the probe module about 18 in.

Axiom®User's Guide Version 1.8  May 2015which a test terminates. The MAX TM SPL limit is shown on all on-ear measurement screens. The default

Axiom®User's Guide Version 1.8  May 2015received, including interference that may cause undesired operationThis Class A digital apparatus comp

Axiom®User's Guide Version 1.8  May 2015Probe tube insertion: The blue lanyard holds the tube in place and the depth marker is at the intertr

Axiom®User's Guide Version 1.8  May 201513 On-Ear Measures Screen SetupTo accommodate your working preferences, the appearance of On-ear meas

Axiom®User's Guide Version 1.8  May 2015Hiding a curve does not erase it. To erase curves click on and select one of the Erase options.62

Axiom®User's Guide Version 1.8  May 201514 On-Ear Instrument MeasuresA number of the tests covered in Test box measures can also be performed

Axiom®User's Guide Version 1.8  May 201515 RECD measurementThe RECD (real-ear to coupler difference) may be individually measured to improve

Axiom®User's Guide Version 1.8  May 20157. Click on [Calibrate] and follow the setup instructions.8. Click on to generate the coupler respon

Axiom®User's Guide Version 1.8  May 20151. Click on and select [Speechmap] from either the [Test box] or [On-ear] menus.2. Click on the [REC

Axiom®User's Guide Version 1.8  May 20157. Insert the foam tip into the ear, being careful not to advance the probe tube further

Axiom®User's Guide Version 1.8  May 2015For similar reasons, the on-ear RECD measurement is performed with a foam eartip, rather than the earm

Axiom®User's Guide Version 1.8  May 2015Test-box Speechmap coupling: HA-2 (BTE) couplerSince the RECD here is measured with a foam eartip, an

Axiom®User's Guide Version 1.8  May 2015The compliances listed in the following table are met with the supplied RECD transducer, microphones,

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Axiom®User's Guide Version 1.8  May 201516 Insertion GainInsertion gain is the difference between aided and unaided ear canal SPL (REIG = REA

Axiom®User's Guide Version 1.8  May 2015 Insertion gain in HLSee On-Ear Measures - Setup and On-Ear Measures Screen Setup1. Click on and th

Axiom®User's Guide Version 1.8  May 2015device operation.To enter data from a barcode see Barcode data input and:1. Press the barcode trigger

Axiom®User's Guide Version 1.8  May 20154. Click on the REUR button (below REAR/REIG test 3).5. Click on to accept the default 55 dB SPL Pin

Axiom®User's Guide Version 1.8  May 2015produced by the Swept stimulus at the same overall level. The REIGs will be similar except at levels w

Axiom®User's Guide Version 1.8  May 20155. Set Instrument to [CROS].6. Select REAR 2 and obtain a response using [Pink noise] at 55. Adjust th

Axiom®User's Guide Version 1.8  May 201517 SpeechmapSpeechmap presents hearing threshold, UCL and amplified speech spectra as SPL in the ear

Axiom®User's Guide Version 1.8  May 20153. There is no provision to input the number of compression channels. This may be useful when the sign

Axiom®User's Guide Version 1.8  May 2015are of little value in estimating amplified speech levels. Matching amplified speech to the LTASS targ

Axiom®User's Guide Version 1.8  May 2015University in implementing the DSL method.CAMFIT is used under license from Prof. Brian C.J. Moore, Un

Axiom®User's Guide Version 1.8  May 2015Before starting, please see On-Ear Measures - Setup, Speechmap Fitting, Speechmap Technical Details an

Axiom®User's Guide Version 1.8  May 20152. To remove a checked stimulus from the list, click the stimulus you want to remove.You can also choo

Axiom®User's Guide Version 1.8  May 2015 Screen tour - unaided screen82

Axiom®User's Guide Version 1.8  May 2015 Screen tour - aided screen On-ear or Test box modeThe Speechmap environment provides two hearing in

Axiom®User's Guide Version 1.8  May 2015 SII calculation in SpeechmapThe Axiom calculates a Speech Intelligibility Index (SII) value (in %)

Axiom®User's Guide Version 1.8  May 20154. Copy the WAV files from the PC to the top level directory (i.e. not in any folder) of the USB stick

Axiom®User's Guide Version 1.8  May 2015recording software. A WAV file has many properties that defines the format of the digital audio. When

Axiom®User's Guide Version 1.8  May 2015Example of user-supplied files, “user.wav”, “user_-4.wav” and “user_+2.5.wav”.87

Axiom®User's Guide Version 1.8  May 201518 Speechmap Fitting ProceduresThe Speechmap fitting screen provides a number of choices for inputing

Axiom®User's Guide Version 1.8  May 20156. Fitting: Type of instrument or fitting to be verified. In Test box mode, select from BTE, ITE, ITC

Axiom®User's Guide Version 1.8  May 2015 EC Declaration of Conformity9

Axiom®User's Guide Version 1.8  May 20153. Click on to start this test. Once the test is started, click on the [Stimulus] list b

Axiom®User's Guide Version 1.8  May 20152. Click on to select the second Speechmap test. The Test 2 box is outlined to indicate it is activ

Axiom®User's Guide Version 1.8  May 2015 Adjusting the Maximum Output LevelSee Speechmap screen choices for setup and audiometric data entry.

Axiom®User's Guide Version 1.8  May 2015fittings - it doesn’t matter how the sound reaches the TM, the perception is the same. However, the so

Axiom®User's Guide Version 1.8  May 2015To test frequency-lowering:1. Click on and choose Speechmap from either the On-ear or Test box menus

Axiom®User's Guide Version 1.8  May 20157. Click on another Test button, click on and select the same stimulus and stimulus level used in Te

Axiom®User's Guide Version 1.8  May 2015 to run and record the speech passage.3. Attach the FM receiver to the hearing aid and set the FM rece

Axiom®User's Guide Version 1.8  May 201519 Speechmap Technical DetailsSpeechmap provides a variety of stimuli for the testing

Axiom®User's Guide Version 1.8  May 2015spectrum is from Cornelisse et al (1991) adjusted to a 1 m reference.1/3 octave band SPL Add to band S

Axiom®User's Guide Version 1.8  May 20151600 2.5 -0.3 -1.9 2.0 -4.0 6.12000 4.1 3.8 2.1 3.3 -4.0 6.12500 3.5 5.0 4.8 5.0 -3.0 6.43150 2.8 3.3