aurical_aud_reference_manual_oct_2014.pdf
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AURICAL Aud
Reference Manual
Doc. No. 7-50-1030-EN/10
Part No. 7-50-10300-EN
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Copyrightnotice
No part of this documentation orprogram may be reproduced, stored in a retrieval system, ortransmitted, in any form orby any
means, electronic, mechanical, photocopying, recording,or otherwise,without the prior written consent of GN Otometrics A/S.
Copyright© 2014, GN Otometrics A/S
Published in Denmark byGN Otometrics A/S, Denmark
All information, illustrations, and specifications in this manual are based on the latest productinformation available at the time of
publication. GN Otometrics A/Sreserves the right to make changes at any time without notice.
Registered trademarks and Trademarks
MADSEN Itera II,MADSEN OTOflex 100, OTOsuite,AURICAL FreeFit, AURICAL Visible Speech, MADSEN Astera², MADSEN Xeta, ICS
Chartr 200 VNG/ENG, ICS Chartr EP, OTOcam 300, MADSEN AccuScreen, MADSEN AccuLink,ICS AirCal, AURICAL Aud, AURICAL HIT,
ICS Impulse, OTObase and MADSEN Capella² are either registered trademarks ortrademarks of GN Otometrics A/S.
Versionrelease date
2014-10-30
Technicalsupport
Please contact your supplier.
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Table of Contents
1
Introduction to AURICAL Aud
1.1 AURICAL Aud
1.2 HI-PRO
1.3 AURICAL speaker unit
1.4 The OTOsuite Audiometry Module
1.4.1 NOAH
1.5 Intended use
1.6 About this manual
1.6.1 Installation and Assembly
1.6.2 Safety
1.6.3 Training
1.7 Typographical conventions
1.7.1 Navigation
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10
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11
2
Navigating in the OTOsuite Audiometry Module
2.1 The Audiometry Module main window
2.2 Menus and toolbar icons
2.2.1 File menu
2.2.2 Edit menu
2.2.3 View menu
2.2.4 Measurement menu
2.2.5 Tools menu
2.3 The Patient Responder indicator
2.4 The Masking Assistant
2.5 The Control Panels
2.5.1 Quick Select - Tone
2.5.2 Quick Select - Speech
2.5.3 Test Options
2.5.4 Monitor and Level
2.6 The stimulus bar
2.6.1 Test controls
2.6.2 The Tone stimulus bar
2.6.3 The Speech stimulus bar
2.7 The Tone test screen
2.7.1 The work area in the Tone screen
2.7.2 The audiogram
2.7.3 Curves and symbols selection
2.7.3.1 Selecting a symbol or curve
2.7.3.2 Creating new symbols
2.7.4 Compare audiograms
2.7.5 Tone feature boxes
2.7.6 Tone editing options
2.8 Work-flow related features
2.8.1 Selecting orientation
2.8.2 Automatic frequency/level shift when storing
2.8.3 Stimulus duration
2.8.4 Ear shift frequency and level setting
2.8.5 Saving non-stimulus channel as masking
2.9 The Speech test screen
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25
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2.10
2.11
2.12
2.13
2.14
2.15
4
2.9.1 Selecting word or phoneme scoring
2.9.2 Selecting speech material
2.9.3 Scoring words using integrated OTOsuite Speech Material
2.9.4 Scoring words using external sound source
2.9.5 Scoring phonemes using integrated OTOsuite speech material
2.9.6 Scoring phonemes using external sound source
2.9.7 Saving source levels for speech material
Speech testing - tabular view
2.10.1 Speech editing options - tabular view
2.10.2 Storing SNR for Speech testing
Speech testing - graph view
2.11.1 Speech editing options - graph view
Speech feature boxes
Terms and abbreviations used in Speech testing
Special tests
2.14.1 SISI (Short Increment Sensitivity Index)
2.14.1.1 Navigating in SISI
2.14.1.2 The test process - SISI
2.14.2 ABLB (Alternate Binaural Loudness Balance)
2.14.2.1 Navigating in ABLB
2.14.2.2 The test process
2.14.3 TEN (Threshold-Equalizing Noise)
2.14.4 Ambient Noise Assessor
2.14.4.1 Selecting the FreeFit device in OTOsuite
2.14.4.2 Measuring Ambient Noise with AURICAL FreeFit
2.14.4.3 Noise level indicators stored with measurements
2.14.4.4 Activating the Ambient Noise Assessor automatically
2.14.4.5 Minimum HTL per transducer type
Test controls (keyboard, mouse)
2.15.1 PC keyboard controls
38
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47
48
49
51
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54
55
57
58
58
60
60
60
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3
Preparing for testing
3.1 Preparing the test environment
3.2 Preparing the test equipment
3.3 Listening check
3.4 Preparing the client
3.4.1 Hygienic precautions
3.4.2 Inspecting the client’s ear(s)
3.5 Proper transducer placement
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4
Examples of audiometric testing
4.1 Testing the older child or adult patient
4.1.1 Assessing pure tone threshold using the Hughson/Westlake procedure
4.1.2 Assessing pure tone or speech most comfortable loudness level (MCL)
4.1.3 Assessing pure tone or speech uncomfortable loudness level (UCL)
4.1.4 Assessing speech reception threshold (SRT) using the Hughson/Westlake procedure
4.1.5 Assessing word recognition score
4.2 Special Tests
4.2.1 Performing Tone Decay using the Modified Carhart Method
4.2.2 Performing a pure tone Stenger
4.2.3 Performing speech Stenger
4.2.4 Performing Weber
4.2.5 Performing Rinne
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4.3
4.2.6 Performing Alternate Binaural Loudness Balancing (ABLB) test
4.2.7 Performing Short Increment Sensitivity Index (SISI) test
Testing with sound files
4.3.1 Playing sound files without word lists
4.3.2 Playing sound files with word lists
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5
Unpacking and Installing
5.1 Requirements to the location
5.1.1 Requirements to noise in the test environment
5.2 Unpacking
5.3 Storing
5.4 Views of AURICAL Aud
5.4.1 AURICAL Aud
5.4.2 AURICAL Aud - with HI-PRO
5.4.3 AURICAL speaker unit
5.5 Connection panels
5.5.1 AURICAL Aud connection panel
5.5.2 Built-in HI-PRO connection panel
5.5.3 AURICAL speaker unit connection panel
5.6 Assembling AURICAL Aud
5.7 Desktop or wall installation
5.7.1 Connecting accessories and PC to AURICAL Aud
5.7.2 Mounting AURICAL Aud on the mounting plate
5.8 AURICAL speaker unit installation
5.8.1 Connecting cables to the AURICAL speaker unit
5.8.2 Connecting accessories and PC to AURICAL Aud
5.8.3 Mounting AURICAL Aud on the AURICAL speaker unit
5.9 Powering AURICAL Aud
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6
Configuring the Audiometry Module
105
7
Communicating with the device
7.1 Reconnecting to the device
7.2 Updating device firmware
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107
107
8
AURICAL Aud with HI-PRO
109
9
Maintenance and calibration
9.1 Service and repair
9.1.1 Fuses
9.2 Maintenance
9.3 Cleaning
9.4 Calibration
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111
111
112
10 Troubleshooting
10.1 Powering
10.2 Software/device communication
10.3 HI-PRO
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113
113
113
11 Standards and Safety
11.1 AURICAL Aud
11.2 Warning notes
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115
116
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11.2.1 Connector warning notes
11.2.2 General warning notes
11.3 The OTOsuite Audiometry Module
11.4 Manufacturer
11.4.1 Responsibility of the manufacturer
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118
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118
12 Technical specifications
12.1 AURICAL Aud
12.2 HI-PRO (built-in)
12.3 AURICAL speaker unit
12.4 Accessories
12.5 Notes on EMC (Electromagnetic Compatibility)
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124
124
Index
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1
Introduction to AURICAL Aud
1.1
AURICAL Aud
AURICAL Aud is a PC-controlled audiometer for testing a
person's hearing. The audiometer, which is connected to a
PC via USB, is operated from the OTOsuite Audiometry
Module PC software.
With AURICAL Aud you can perform all standard audiometric tests, tone and speech audiometry and special
tests.
The intuitive graphical user interface and the user test feature enable you to carry out your tests with very little
effort.
You can connect other devices easily through the built-in USB Hub, and AURICAL Aud provides the necessary connections
to carry out counseling using the OTOsuite Counseling and Simulations module.
Configurations
AURICAL Aud is available as:
• part of the integrated AURICAL system
•
a separate audiometer
Each configuration is available with an optional built-in HI-PRO and an optional AURICAL speaker unit. AURICAL Aud can be
placed on the desk top, mounted directly on the back of the AURICAL speaker, or, if the optional kit is used, it can be
mounted on the wall or under the desk.
Operating AURICAL Aud
•
You operate AURICAL Aud from the PC’s keyboard/mouse with the OTOsuite Audiometry Software Module acting as
the display showing the intensity, frequency as well as current settings and other information on the PC monitor.
•
From the OTOsuite Audiometry Software Module, which is NOAH compatible, you can monitor test results, create
User Tests, store and export data, and print reports.
Test intensities and frequencies as well as the current test settings and other information are shown on the PC monitor.
•
Speech input signals can be taken from audio files on the PC hard drive, CD-ROM, external line-in devices such as a CD
player, or live-voice from a microphone.
Outputs
AURICAL Aud supports the following types of output:
• One set of headphones. The supported headphone types are:
–
TDH39 headphones
–
TDH39 with ME70
–
Holmco
–
HDA 200/HDA300
•
Insert phones
•
Bone oscillator
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•
1.2
2 sound field speakers. The speakers can use either the power amplifier built into AURICAL Aud or an external power
amplifier.
HI-PRO
AURICAL Aud is available with an optional built-in HI-PRO (Hearing Instrument Programming Unit).
The HI-PRO serves as a standardized interface between OTOsuite and programmable hearing instruments, and can serve as
a remote control for programmable hearing instruments.
In the HI-PRO section of the AURICAL Aud cabinet there are two connectors for the cables to the programmable hearing
instruments (or remote control), so that both a left and a right hearing instrument can be programmed.
The PC software for programming the hearing instrument is made by the hearing instrument manufacturer.
The cables for connecting hearing instruments to HI-PRO are supplied by the hearing instrument manufacturer.
1.3
AURICAL speaker unit
AURICAL Aud is available with the optional AURICAL speaker unit. The AURICAL Speaker is for use with AURICAL FreeFit
and the PMM and Counseling and Simulations modules in OTOsuite. The speaker unit can be attached to an AURICAL Aud
audiometer or to an AURICAL Aud that is not enabled as an audiometer. You can use AURICAL Aud to connect and drive
the accessories for OTOsuite PMM and the OTOsuite Counseling and Simulations module. The speaker unit also contains a
built-in charger for FreeFit.
Note • The instructions for assembly are the same, whether or not the audiometer is activated.
1.4
The OTOsuite Audiometry Module
OTOsuite
OTOsuite is a software tool that integrates a suite of audiological tests with result review
and reporting capabilities into a single powerful PC application.
OTOsuite integrates closely with the latest generation of Otometrics test devices by offering real time presentation of test
results and full test control directly from a PC with a comprehensive user interface and NOAH compatibility.
The OTOsuite Audiometry Module is designed to operate with AURICAL Aud as the test device.
The OTOsuite Audiometry Module
The OTOsuite Audiometry Module provides you with comprehensive control and overview of the current stimulus and
masking choices both numerically and graphically in the displayed audiogram when you test with a connected Otometrics
audiometer.
As the module is part of OTOsuite, audiograms can be used directly in other OTOsuite modules such as the PMM and
Immittance modules for an optimized workflow independent of NOAH, and for combined reporting.
The Audiometry Module provides you with a wide range of features:
Testing
•
8
Testing, using the Audiometry Module as a handy control panel while you follow stimulus settings and test progress on
your PC display
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•
Tone testing
•
Speech testing
•
A wide range of special tests
•
Controlling play-back of speech test material
•
Using the Masking Assistant to prompt when masking is recommended
•
Creating complete User Tests for specific audiometric tasks, including selecting specific speech lists, viewing preferences, activating operator monitoring peripherals, etc.
•
Entering tester details and test date entry for manually entered audiograms
•
Entering special test and tuning fork test results
Viewing and printing
1.4.1
•
Viewing and printing test results
•
Viewing the progression of a range of tests online
•
Viewing historic audiometry results from NOAH or XML
•
Viewing online audiometry results during testing
•
Viewing masking level indicator in audiogram
•
Viewing audiogram overlays
NOAH
OTOsuite integrates with:
• NOAH systems
•
NOAH for ENT
•
NOAH-compatible Office Management systems.
The NOAH System is a HIMSA product for managing clients, launching hearing test applications and fitting software, and
storing audiological test results. OTOsuite stores test results using NOAH.
Note • Whenever reference in this manual is made to NOAH, this reference should also apply to NOAH compatible systems.
1.5
Intended use
AURICAL Aud and the Audiometry module
Users: audiologists, ENTs and other health care professionals in testing the hearing of their patients.
Use: diagnostic and clinical audiometric testing.
AURICAL Aud with HI-PRO and the Audiometry module
Users: audiologists, ENTs, hearing instrument dispensers and other health care professionals.
Use: As for AURICAL Aud, and hearing instrument fitting.
Speaker unit
Users: audiologists, hearing instrument dispensers and other health care professionals.
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Use: The AURICAL speaker unit is intended to present audio signals for use with AURICAL Aud and the Audiometry module, with AURICAL FreeFit and the OTOsuite PMM module and the OTOsuite Counseling and Simulations module.
1.6
About this manual
This is your guide to installing, calibrating and using AURICAL Aud and to using the OTOsuite Audiometry Module. It also
introduces you to the key features of the device and the software, as well as to working scenarios for performing tests and
viewing and printing test results.
We strongly recommend that you read this manual carefully before using AURICAL Aud and the Audiometry Module for
the first time.
Note • If you are using the Audiometry Module with NOAH, we recommend that you are familiar with the screens
and functions provided in NOAH.
1.6.1
Installation and Assembly
Unpacking ► 90 and Assembling AURICAL Aud ► 97 contain a full description of unpacking instructions and how to
assemble the device. For instructions on installing the software, see the OTOsuite Installation Guide.
1.6.2
Safety
This manual contains information and warnings which must be followed to ensure the safe performance of AURICAL Aud.
Warning • Local government rules and regulations, if applicable, should be followed at all times.
Safety information is stated where it is relevant, and general safety aspects are described in Standards and Safety ► 115.
1.6.3
Training
It is recommended that you read this manual and try out test scenarios before you start operating AURICAL Aud so that
you are familiar with both the device and the software program before testing a patient.
1.7
Typographical conventions
The use of Warning, Caution and Note
To draw your attention to information regarding safe and appropriate use of the device or software, the manual uses precautionary statements as follows:
Warning • Indicates that there is a risk of death or serious injury to the user or patient.
Caution • Indicates that there is a risk of injury to the user or patient or risk of damage to data or the device.
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Note • Indicates that you should take special notice.
1.7.1
Navigation
Menus, icons and functions to select are shown in bold type, as for instance in:
•
Otometrics - AURICAL Aud
Click the Set options icon on the toolbar or select Tools > Options...
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2
Navigating in the OTOsuite Audiometry Module
The general functions for navigating in the main window are described in the OTOsuite manual.
You will find descriptions of the Audiometry test screens in:
•
The Tone test screen ► 29
•
The Speech test screen ► 38
Special tests are described in:
•
2.1
Special tests ► 60
The Audiometry Module main window
The basic OTOsuite functions are described in the OTOsuite User Guide.
Audiometry elements
A. Audiometry toolbar
B. Control Panel
C. Work area
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D. Stimulus bar
E. Masking level indicator
F. Stimulus marker
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2.2
Menus and toolbar icons
General icons - see the OTOsuite manual
Audiometry icons and menu selections
The icons and menu selections that are unique to Audiometry functionality depend on the test functions included in OTOsuite and/or whether a test device is connected.
Tone audiometry
Speech audiometry
2.2.1
File menu
Menu item
Icon
New Audiogram
2.2.2
Description
Select new audiogram. You will be prompted to save or cancel current data.
Edit menu
Menu item
Audiometric properties...
Icon
Shortcut
Description
Ctrl+U
Click to enter Tester name, Test Date, and air conduction transducer for a manually entered audiogram.
Note • The air conduction transducer is stored when you
have selected it in the transducer section of the Control
Panel (or with device controls, if applicable) and data points
are entered on the audiogram.
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2.2.3
View menu
Menu item (Tone)
Masking Assistant
Icon
Description
Enable or disable the Masking Assistant.
The Masking Assistant causes an unmasked threshold to flash
repeatedly if masking is recommended.
•
Overlays
See The Masking Assistant ► 18.
Enables or disables the overlays. Overlays display
•
pictures
•
severity
•
speech banana,
•
speech letters,
•
unusable area
on the audiogram.
Overlays can also be displayed by selecting them from the overlays
box below or next to the audiogram.
To view/hide the overlays box, select Tools > Options > General.
See Tone feature boxes ► 34.
Combined Audiogram
Combined View
•
Click to view both ears in a single audiogram.
Split View
•
Click to view separate audiograms for each ear.
Click to toggle between viewing both ears in a single audiogram (combined audiogram) or both a left and a right audiogram on your screen.
Left - Right
Click to display the left ear audiogram on the left side of the window
and the right ear audiogram on the right side of the window (when
Dual Graph View is enabled in Options > Audiometry > Tone >
Misc).
Right - Left
Click to display the right ear audiogram on the left side of the window
and the left ear audiogram on the right side of the window (when
Dual Graph View is enabled in Options > Audiometry > Tone >
Misc).
Audiogram Legend
Click to enable or disable the display of the audiogram legend. The
legend contains the most commonly used symbols for the audiogram.
It is not configurable.
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Menu item (Tone)
Icon
Description
The graph shows up to 20,000 Hz. AURICAL Aud presents stimulus up
to 12,500 Hz.
Standard / All / High
frequencies
•
Click to choose between viewing:
Standard Frequencies
Displays the audiogram from 125 to 8000 Hz.
All Frequencies
Displays the audiogram from 125 to 20,000 Hz.
High Frequencies
Displays the audiogram from 8000 to 20,000 Hz.
The options for frequency resolutions are 1/6, 1/12, 1/24 and 1/48
octave as well as 1 Hz. Select the different tone stimulus resolutions
from the toolbar or from Tools > Options > Audiometry > General.
Frequency resolution
You can store up to 24 points for each audiometry curve. You will be
prompted if you try to store more than the maximum number of
points.
2.2.4
Measurement menu
Menu item
Monitoring
16
Icon
Description
Enables or disables the monitor speaker for monitoring stimuli presented
to the patient from the Stimulus or Masking channel.
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Menu item
Icon
Description
Enables communicating with the patient in the sound booth. This will display the Talk Forward dialog box, where you can control the talk forward
microphone sensitivity and the output level (in dB HL) to the patient.
Talk Forward
When enabled, the monitor speaker will be disabled.
When the Allow stimulation checkbox is checked, you can present stimuli
while leaving Talk Forward on. This is useful when you wish to present
stimuli and verbally reinforce the patient quickly, as for instance during
pediatric testing.
Note • Be aware that background noise must not be present if
Allow stimulation is checked.
2.2.5
Select Orientation
Click to select the perspective of the patient's ears as presented on the
screen for graph and table views.
Scoring and Playing
See Selecting word or phoneme scoring ► 38.
Ambient Noise
Assessor
See Ambient Noise Assessor ► 67.
Tools menu
Menu item
Curves and Symbols
Icon
Description
Click to select the Curves and Symbols dialog box.
This dialog box and its related function are specific to configuring the curves and
symbols to be displayed on the audiogram or speech graph during testing.
See Curves and symbols selection ► 32.
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2.3
The Patient Responder indicator
When the patient presses the Patient Responder this is shown on the Stimulus bar, and a sound signal from the PC is heard
through the Monitor Speaker or Operator Headset. The sound signal is optional (Tools > Options > Audiometry > General
> Monitoring and Levels > Audible patient response).
Single Responder setup
•
Green
Indicates that the patient is pressing the Patient
Responder.
2.4
The Masking Assistant
If the Masking Assistant is enabled, it will at all times check for frequencies that may require testing with
masking. This also applies to old audiograms imported from NOAH or XML as long as a supported transducer
was stored with the data.
The Masking Assistant is a tool provided to help you with an indication that there may be frequencies where testing with
masking1 is recommended.
• The audiogram symbol will flash at the specific frequencies where contralateral masking may be recommended2.
•
The masking criteria are configurable so that you can
set them up to match your local recommendations for
masking. You can for instance choose either frequency
specific criteria, which increases the efficacy of your
work, or the traditional "one-level-fits-all" criteria.
Select the Tools > Configuration Wizard > Configure... Audiometry > Masking Assistant to set up
the masking criteria.
How does the Masking Assistant work?
Terminology
AC
AC test ear
1(Katz, J., Lezynski, J. (2002). Clinical Masking. In J. Katz, ed., Handbook of Clinical Audiology, Williams and Wilkins, Baltimore.)
2Based on criteria described in Clinical Masking, Essentials of Audiology, Stanley A. Gelfand, Thieme 1997, and Meas-
urement of Pure Tone Hearing Thresholds, Audiologists’ Desk Reference - Vol 1, James W. Hall III, H. Gustav Mueller
III, Singular Publishing Group 1997. and Munro K.J., Agnew N. A comparison of inter-aural attenuation with the Etymotic ER-3A insert earphone and the Telephonics TDH-39 supra-aural earphone. Br J Audiol 1999; 33: 259-262.
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Terminology
ACc
AC contra
BC
BC
BCc
BC contra
Min IA
Minimum inter-aural attenuation.
When is masking required?
Masking is recommended when the following conditions are met:
AC
AC > ACc + Min IA
or
AC > BCc + Min IA
BC
BC < AC - x* dB
Only stored thresholds measured without masking are checked. Levels which did not evoke a response are excluded from
the check. This means that as soon as a masked threshold has been stored, the flashing stops for that frequency.
* denotes configurable Air/Bone gap criterion (Tools > Configuration Wizard > Configure... Audiometry > Masking Assistant).
Min IA is frequency specific
These are the Min IA tables for TDH-39 and Otometrics Inserts used in the Masking Assistant 1.
Min IA (supraaural phone: TDH-39), frequency specific
Hz
dB
125
35
Katz & Lezynski, (2002)
250
48
Munro & Agnew, BJA (1999)
500
44
Munro & Agnew, BJA (1999)
750
40
N/A - fulfill traditional approach
1000
48
Munro & Agnew, BJA (1999)
1500
40
N/A - fulfill traditional approach
1Katz, J., Lezynski, J. (2002). Clinical Masking. In J. Katz, ed., Handbook of Clinical Audiology, Williams and Wilkins, Baltimore. Munro, K.J., Agnew, N. A comparison of inter-aural attenuation with the Etymotic ER-3A insert earphone and
the Telephonics TDH-39 supra-aural earphone. Br J Audiol 1999; 33: 259-262. Hall, JW., MUELLER, HG. (1997). The audiologists’ desk reference, Volume I., Singular Publishing Group, San Diego.
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Hz
dB
2000
44
Munro & Agnew, BJA (1999)
3000
56
Hall J.W. III & Mueller G.H. III / Munro & Agnew, BJA (1999)
4000
50
Katz J / Munro & Agnew, BJA (1999)
6000
44
Hall J.W. III & Mueller G.H. III / Munro & Agnew, BJA (1999)
8000
42
Katz J / Munro & Agnew, BJA (1999)
Min IA insert phone
2.5
Hz
dB
125
60
N/A - traditional value
250
72
Munro & Agnew, BJA (1999)
500
64
Munro & Agnew, BJA (1999)
750
60
N/A - traditional value
1000
58
Munro & Agnew, BJA (1999)
1500
60
N/A - traditional value
2000
56
Munro & Agnew, BJA (1999)
3000
58
Munro & Agnew, BJA (1999)
4000
72
Munro & Agnew, BJA (1999)
6000
54
Munro & Agnew, BJA (1999)
8000
62
Munro & Agnew, BJA (1999)
The Control Panels
Click the Control Panel icon in the toolbar to activate the Control Panel.
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The Tone Control Panel
A. Quick Select - Tone ► 21
B. Test Options ► 24
C. Monitor and Level ► 25
The Speech/Aided Speech Control Panel
A. Quick Select - Speech ► 22
B. Test Options ► 24
C. Monitor and Level ► 25
2.5.1
Quick Select - Tone
Click the Control Panel icon in the toolbar to activate the Control Panel.
Quick Select
Click to select the options you wish to use. You can customize the symbols to suit your purposes: See Curves and symbols selection ► 32.
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Quick Select
R, B, L
(Right, Binaural, Left)
Click to select whether your transducer selections will be routed to the right, left,
or both right and left transducers.
This will also reflect on how the results are stored:
• Left symbols will be stored on the left-ear audiogram (or on the combined audiogram)
•
Right symbols will be stored on the right-ear audiogram (or on the combined
audiogram)
•
Binaural symbols will be stored on both audiograms (or once on the combined
audiogram)
AC (Air Conduction)
Mask
Presents the stimulus and/or masking through the supra-aural headphones.
BC (Bone Conduction)
Mask
Presents the stimulus and/or masking through the bone oscillator.
SF (Sound F ield)
Mask
Presents the stimulus and/or masking through the soundfield speakers.
•
If you are using only 2 speakers, the routing is determined by the typical routing controls (left, right, binaural).
•
If you are using only 2 speakers, you can set up a channel to provide stimulus/masking via a different transducer (i.e. when providing masking to one ear
and stimulating the other ear using the soundfield speakers).
Condition
Click to select the conditions you wish to apply to the audiogram.
Condition
•
Unaided
•
Aided Speech 1
•
Aided Speech 2
Click to define the viewing mode you wish to apply to the audiogram.
Threshold
MCL
UCL
2.5.2
Threshold view
Most Comfortable Level view
UnComfortable Level view
Quick Select - Speech
Click the Control Panel icon in the toolbar to activate the Control Panel.
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Test Ear
Click to select the test ear to be recorded in the audiogram.
•
Left/Both/Right
Measurement
Click to select the transducer type used.
AC
•
Air Conduction
BC
•
Bone Conduction
SF
•
Sound Field
Click to select the condition you wish to apply to the audiogram.
SDT
•
The data will be stored as a Speech D etection Threshold. This is the lowest level at which
the patient responds to speech at least 50% of the time (also known as SAT - Speech
Awareness Threshold).
SRT
•
The data will be stored as a Speech Reception Threshold. This is the lowest level at which
the patient repeats at least 50% of spondaic words correctly.
MCL
•
The data will be stored as a Most Comfortable Loudness level. This is the level at which
the patient reports it is most comfortable to listen to the speech stimulus.
UCL
•
The data will be stored as an UnComfortable Loudness level. This is the level at which the
patient reports that the speech stimulus is uncomfortably loud.
WRS/SRS
•
The data will be stored as a Word Recognition Score or Sentence Recognition Score.
This test requires monosyllabic words to be presented at the patient's MCL level or above.
The patient is instructed to repeat the words he or she hears.
SNR/dB step
•
Signal to Noise Ratio in dB step.
If you check SNR, you can report a Signal to Noise Ratio in the speech result description
box. This also stores the speech data as a "speech in noise" test and is accordingly differentiated from a regular speech measurement.
IPSI routing
IPSI
•
Click to select the IPSI routing. IPSI routes the non-stimulus channel to the same ear as the
speech stimulus. That way, a speech in noise test can readily be administered.
Masking/Stimulus 2
On
•
Click Masking/Stimulus 2 On to enable non-stimulus channel presentation.
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This selection depends on the Input selection for the non-stimulus channel.
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2.5.3
Test Options
General options
dB Step
1, 5 (dB)
Defines the intensity of the stimulus and masker used to record the audiogram.
AC Transducer
Insert
Presents the stimulus or masker through the insert earphones. See Configuring the Audiometry Module ► 105.
Phone
Presents the stimulus or masker through supra-aural headphones.
Control
Stim On
When checked, the stimulus will be continuously on and will turn off when you press the stimulus button.
Stim Lock
The stimulus/masker from both channels will be presented simultaneously if this option is
enabled.
Tracking
When the intensity of the stimulus/masker for a channel is increased/decreased by x dB the
intensity of the stimulus/masker for the other channel will also increase/decrease by the same
x dB if this option is enabled.
Pulsed
Tone only:
The stimulus pulses 200ms on and 200ms off if this option is enabled.
The pulse duration is configurable: Select Tools > Options... > Audiometry > Tone > Measurement > Pulsed.
Tone specific options
Stimulus
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Tone
Presents a pure tone as the stimulus type.
• 125 Hz to 12,500 Hz is standard.
Warble
Presents a warbled pure tone as the stimulus type. This stimulus type should be used for sound
field testing to avoid any standing waves. Warble depth and rate are configurable: select Tools
> Options > Audiometry > Tone > Measurement Misc. > Warble.
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Speech specific options
Input
Speech material
source (drop down
list)
Source...
Determines the input to Source A and Source B.
The options are:
• Int. File (stored on hard drive),
•
Int. CD (internal CD drive built into the PC),
•
Line In (external medium connected to the PC).
The options are:
• Mic
For live voice speech testing by the Operator. The operator presents live speech material
through a microphone.
•
Source A
Delivers recorded speech material from source A.
•
Source B
Delivers recorded speech material from source B
•
Source A+B
Delivers recorded speech material from source A and B. This is only possible for the integrated speech material, if it has been prepared for this.
•
Source B+A
Delivers recorded speech material from source B+A. This is only possible for the integrated speech material, if it has been prepared for this.
2.5.4
Monitor and Level
Monitor
The signal level changes in 3 dB steps with each click of the arrow up or arrow down buttons.
•
To change the signal level by more than one click at a time, use the mouse scroll wheel.
•
The check boxes are used for enabling/disabling of monitoring. You can also define this in Tools > Options > Audiometry > General > Measurement > Monitor.
Stim
The stimulus can be monitored if this option is enabled. The indicator displays the level of the signal.
Mask
Masking can be monitored if this option is enabled. The indicator displays
the level of the signal.
Talkback
Talkback can be monitored if this option is enabled. The indicator displays
the level of the signal.
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