Page 2: Table Of Contents
Table of Contents 1 About RM500SL..................................6 Product description................................6 Associated items and supplies..............................6 SAFETY WARNINGS and NOTICES..........................7 Environmental safety................................8 Declaration of Electromagnetic Compatibility (EMC).......................8 Warranty, Trademarks, Acknowledgments.........................9 EC Declaration of Conformity............................11 Electronic User’s Guide..............................12 How to Avoid Undesirable Side Effects..........................13 2 Getting Started..................................14 Unpacking and connecting..............................14...
Page 3 User's Guide Version 3.16 © October 2016 ® RM500SL Calibration check for coupler microphone........................40 Coupling the hearing instrument for ANSI/IEC tests......................41 Coupling the hearing instrument for Test box Speechmap....................41 Positioning the hearing instrument............................42 9 ANSI/IEC Hearing Aid Tests..............................43 ANSI S3.22-200x facts...............................43 ANSI 2003 and 2009 /IECtests............................43...
Page 4 User's Guide Version 3.16 © October 2016 ® RM500SL Insertion gain in SPL................................73 Insertion gain in HL................................74 Audiometric data entry...............................74 REUR measurement procedure............................75 REAR measurement procedure............................76 SII calculation in Insertion gain............................77 18 Speechmap..................................78 Speechmap facts.................................78 DSL 5 in Speechmap................................78 DSL 5.0 changes.................................79 NAL-NL1 in Speechmap..............................79...
Page 5 User's Guide Version 3.16 © October 2016 ® RM500SL Test box....................................105 On-Ear....................................105 Sensory Loss Simulator..............................106 23 Glossary....................................108 24 References..................................113 25 Appendix 1..................................116 Manufacturer Disclosure Statement for Medical Device Security.................116 26 Appendix 2..................................119 AudioNote 2.1 VERIFIT and RM500SL Test Signals and Analysis................119...
Page 6: About Rm500Sl
User’s Guide. Note that the User's Guide may be viewed on the RM500SL at any time by pressing <Help> (For long Help pages, use <Left/Right> (or mouse) to switch between the Help index and the Help page and arrows (or mouse) to scroll through the page).
Page 7: Safety Warnings And Notices
This symbol on the product is a WARNING describing a foreseen risk WARNING: To avoid the risk of electrical shock, use only the power cord supplied with the RM500SL and connect it only to a grounded (protectively earthed) electrical outlet.
Page 8: Environmental Safety
Medical electrical equipment needs special precautions regarding EMC and needs to be installed and put into service according to the following information: The RM500SL should not be used adjacent to or stacked on other equipment. If this is necessary, its •...
Page 9: Warranty, Trademarks, Acknowledgments
Medical Device Safety Service GmbH, Schiffgraben 41, 30175 Hannover, Germany Warranty: The RM500SL is warranted against defects for two years from date of purchase. Within this period, it will be repaired without charge for parts, labor or return shipping when returned prepaid to your authorized Audioscan service agent.
Page 10 NAL-NL2 is used under license from Hearworks Pty Ltd, Australia. Software licenses: Audioscan distributes selected software components under various open source licenses. These licenses generally give you the right to copy and change the affected component's software source code. For details, see the license...
Page 12: Electronic User's Guide
Except for some additional reference material, this same information is available to you at any time by selecting Help on the RM500SL. A .pdf file viewer, such as Acrobat Reader (5.0 or higher) or Foxit Reader is required to view the User’s Guide.
Page 13: How To Avoid Undesirable Side Effects
During the development of the hearing aid analyzer, Audioscan performed a rigorous Risk Assessment to identify any undesirable side effects that a user could be exposed to during the use of the RM500SL, and incorporated numerous risk reduction design elements into the RM500SL to minimize the risk to users and patients.
Page 14: Getting Started
(VA-131, VA133) are associated items which must be ordered separately. Unpacking and connecting WARNING: To avoid the risk of electrical shock, use only the power cord supplied with the RM500SL and connect it only to a grounded (protectively earthed) electrical outlet.
Page 15: General Care Instructions
2. Plug the probe microphone assembly into the probe connector located at the left of the test chamber as shown. NOTE: A microphone extension cable (VA-131, 133) is available from Audioscan. Standard audio extension cables should not be used. They will substantially increase noise levels.
Page 16: Microphone Care
4. DO make sure the tubing on the BTE (HA-2) coupler is free from any cracks/tears. 5. DO make sure that any replacement tubing used on the BTE coupler is either obtained from Audioscan, or is #13 heavy wall earmold tubing exactly 10 mm in length.
Page 17: Mouse, Keyboard, Barcode Scanner
2. Insert the pill into the hearing instrument, carefully closing the battery door over the thin connecting strip. 3. Plug the pill’s cable into the battery pill jack inside the RM500SL Test box. (to the left of the coupler microphone connection).
Page 18 User's Guide Version 3.16 © October 2016 ® RM500SL Auxiliary audio output jacks are not active in this version of software. Serial numbers below A2051 also have an RS232 serial port which is not active in this version of software.
Page 19: General Operation
This section describes the use of the built-in keypad, a QWERTY keyboard (not included) or a computer mouse (not included) to control the RM500SL and enter data. It also describes the use of an (optional) barcode scanner to enter data from printouts produced by Audioscan analyzers and provides instructions for updating the RM500SL operating software.
Page 20: Keypad Keys
User's Guide Version 3.16 © October 2016 ® RM500SL be entered by scanning the appropriate barcode. In Speechmap, air and bone threshold, UCL, RECD, audiometric transducer, age and ABR nHL to eHL conversion factors are encoded. In Insertion gain, threshold and transducer type are encoded.
Page 21: Menus, Lists And Buttons
Button <Help> Summon context-sensitive Help Screen. <Setup> Summon Setup Menu containing a list of RM500SL features that can be modified. Any modifications made will be maintained after power off. <Tests> Summon Test Selection Menu containing a list of the available test procedures.
Page 22: Screen Messages And Help
Software updating The software currently running on your RM500SL is stored in the system USB flash drive found in the test chamber. Future updates will be installed to this drive via your PC. You may download the latest software from www.audioscan.com or request that a CD-ROM be mailed to you.
Page 23: General Setup
User's Guide Version 3.16 © October 2016 ® RM500SL 4 General Setup This section covers Date and Time setup, Display settings (including mouse pointer speed setting) and Saving test setup. Date and time setup To set the date and time that appears on printouts and calibration screens: 1.
Page 24 User's Guide Version 3.16 © October 2016 ® RM500SL 2. Highlight and <PICK> [Save test setups on power off] to toggle between Yes and No. To enable/disable erasing of test levels, stimuli and assessment parameters when Erase data is selected: 1.
Page 25: Networking
PC. Images and underlying data may also be saved to a shared folder on a networked PC. See Printing and Storing Results for details. The RM500SL may also be connected to a single computer using a network router, switch or hub. Note that sharing data with NOAH is done over this network connection.
Page 26: Noah Service Port
The Audioscan NOAH Module communicates with the RM500SL through the NOAH network service. The RM500SL provides the NOAH service on a TCP port. The Windows computer running the module must be configured to access the same TCP port, which is 8080 by default. Some Windows anti-virus software packages and some network firewalls prevent access to specific ports, including 8080.
Page 27: Testing The Noah Service Port
The RM500SL provides the NOAH service using the HTTP protocol. Communication between the Windows PC and the RM500SL can be tested using an ordinary web browser. 1. On the Windows PC, enter the RM500SL network address and port number into a web browser following this example: http://172.30.86:8080/noah...
Page 28: Single Computer Connection
Most office computers today are already connected to a network, through either a wired or wireless (wifi) interface. In these cases, the RM500SL must be added to the same network as the computer. (See Networking for details.) In cases where no network exists, the RM500SL can be networked directly to a single computer. There are two methods, depending on the network hardware available.
Page 29 Then set the network addresses as shown below by clicking on the down arrow buttons and selecting from the drop-down lists. 7. On the RM500SL, uncheck Auto on the Setup network screen and click the Change button. Then set as shown below by clicking on the down arrow buttons and selecting from the drop-down lists.
Page 30: Printing And Storing Results
USB memory stick or in a Windows-shared folder on a networked PC for further analysis or to be restored to a RM500SL or another Audioscan analyzer. NOTE: If a header, comment, or client ID field, or file name, identifies the printed or saved data as belonging to an individual, it becomes Individually Identifiable Health Information and must be protected under the HIPAA Security Rule.
Page 31: Barcodes, Tabular Data, Headers And Comments On Printouts
User's Guide Version 3.16 © October 2016 ® RM500SL 7. Place the roll in the paper tray and advance another 10 in. (25 cm) of paper. 8. Lower the printer head using the small black lever. Press <Continue>. If nothing shows on the paper when you press <Print> and the paper is coming out –check that the glossy side is up as it comes out of the printer.
Page 32: Printing To Usb Memory
8. Press <Continue> to exit Setup. Printing to USB memory 1. Plug a USB memory stick into the USB port on the recessed connector panel. The RM500SL may be either on or off. 2. Press <Setup>, then highlight and <PICK> [Printing].
Page 33: Network Printer Setup
Check [Black only] for black printouts on a color printer. 5. Connect a USB computer keyboard to the RM500SL and fill in the boxes with the requested information. Highlight and <PICK> each box to open it for data entry and again to close it (or use the Enter key on the keyboard’s number pad).
Page 34: Storing And Restoring Data - Setup
The RM500SL database may be stored and restored via xml files on a USB drive or a networked PC share. If the data exchange location is a network share, you must first enable networking. See Networking. You must also "share"...
Page 35: Storing And Restoring Data
Excel spreadsheet or returned to the RM500SL to recreate the session. The data is saved in a file which you can name using a connected computer keyboard.
Page 36: Data Storage Using Noah
6. Highlight and <PICK> the Session list button to generate a list of previously stored sessions for the indicated Client ID. 7. Highlight and <PICK> a session and press <Continue>. Data storage using NOAH Audioscan offers a module for storing data in the NOAH framework on a Windows PC. Contact Audioscan or visit www.audioscan.com for details.
Page 37: Test Box Measures - Setup
User's Guide Version 3.16 © October 2016 ® RM500SL 8 Test Box Measures - Setup The appearance of Test box measures screens may be changed in several ways. Most screens may be formatted to show results in graphical or tabular format. The Multicurve screen may be scaled in dB SPL or dB Gain.
Page 38: 2003 Or 2009 Ansi Standard
User's Guide Version 3.16 © October 2016 ® RM500SL 3. Press <Continue> to return to the test screen. Hiding a curve does not erase it. To erase curves use the <Session> key. 2003 or 2009 ANSI standard Automated tests of linear and AGC hearing aids may be conducted according to either the ANSI S-3.22-2003 or ANSI S3.22-2009 test standards.
Page 39: Calibrating Test Box Reference Microphone
User's Guide Version 3.16 © October 2016 ® RM500SL Calibrating test box reference microphone Remove any coupler from the coupler microphone before calibration. 1. Position the test box reference microphone opening concentric with the coupler microphone opening and about 1 – 2 mm from as shown below.
Page 40: Calibration Check For Coupler Microphone
User's Guide Version 3.16 © October 2016 ® RM500SL Calibration check for coupler microphone Accuracy of test box measurements depends on the calibration of the coupler microphone. This should be checked regularly using a microphone calibrator with an adapter ring. The RE780 (1 1/8 in.) and RE781 (1in.) rings are designed for Quest CA22 and QC-10/20 respectively.
Page 41: Coupling The Hearing Instrument For Ansi/Iec Tests
The RM500SL is supplied with 2 metal couplers, a type HA-1 (ITE) and a type HA-2 (BTE). Note that an ANSI standard coupler for CICs does not exist. These must be tested in the HA-1 coupler.
Page 42: Positioning The Hearing Instrument
User's Guide Version 3.16 © October 2016 ® RM500SL inside of the coupler opening. Putty should not extend into the coupler cavity or block the sound outlet of the instrument. Vents should be sealed at the faceplate end. It is very important that the instrument be well- sealed to the coupler.
Page 43: Ansi/Iec Hearing Aid Tests
User's Guide Version 3.16 © October 2016 ® RM500SL 9 ANSI/IEC Hearing Aid Tests These tests follow the procedures of ANSI S3.22-2003 or ANSI S3.22-2009 as selected in Setup: ANSI: An automated test sequence for hearing instruments per ANSI S3.22-2003 ANSI / IEC: An automated test sequence for hearing instruments per ANSI S3.22-2009 and IEC 60118-7...
Page 44: Ansi Input-Output Curves
User's Guide Version 3.16 © October 2016 ® RM500SL ANSI input-output curves An input/output curve shows the output level of a hearing instrument as a function of input level and frequency. It is a steady-state pure-tone curve and does not reflect performance with complex signals such as speech.
Page 45: Ansi Telecoil Terminology
Ensure that the test box is well sealed and ambient noise is low. ANSI telecoil terminology The RM500SL test chamber contains an integrated telephone magnetic field simulator (TMFS) meeting the requirements of ANSI S3.22, that enable the measurement of coupler SPL produced by a hearing instrument with a telephone pickup coil.
Page 46: Telecoil Test Results
User's Guide Version 3.16 © October 2016 ® RM500SL 6. Press <Continue> to start the test. 7. While maintaining the orientation of step 5, move the hearing instrument around on the test chamber surface to maximize the number shown in the ‘Maximize Average-SPLITS Value’ box.
Page 48: Other Test Box Measures
10 Other Test Box Measures In addition to the tests of ANSI S3.22, the RM500SL also provides the following tests in the test box: Manual control: Coupler and test box reference mic. SPL and coupler mic. distortion at selected 1/12th octave frequencies and stimulus SPL of 0 and 40 –...
Page 49: Multicurve Procedure
User's Guide Version 3.16 © October 2016 ® RM500SL responded. Multicurve procedure Multicurve generates 1 to 4 output or gain response curves using either pink noise or swept pure tones at input levels ranging from 40 – 90 dB SPL and 0 dB (off).
Page 50: Battery Drain Test
User's Guide Version 3.16 © October 2016 ® RM500SL and displayed at 1/12th octave frequencies. Battery drain test The battery drain test automatically measures the battery current when there is no input signal (quiescent), when the input signal is a 1 kHz tone at 65 dB SPL and the average of the currents when the input signal is 90 dB SPL at the HFA or SPA frequencies (Avg @ 90 dB).
Page 51: Sound Level Meter Using Manual Control
Sound level meter using manual control When set for a stimulus level of 0 dB (off), the Manual control mode allows the RM500SL to be used as a sound level meter. Sound at the test box reference microphone and the coupler microphone may be analyzed by 1/12th octave, A-weighted or C-weighted filters.
Page 53: Sensory Loss Simulator
User's Guide Version 3.16 © October 2016 ® RM500SL 11 Sensory loss simulator Sensory loss simulator description A pure conductive loss attenuates loud and soft sounds equally, and is easily simulated by just turning down the volume or inserting an earplug. Losses of a sensory nature are more complex and more difficult to simulate.
Page 54: On-Ear Measures - Setup
It is suggested that a copy of the calibration curves for the probe modules when new be posted near the RM500SL for comparison with daily or weekly curves. If there is a drift in calibration with time, the module may need replacement. See Calibration check for probe module.
Page 55: Calibration Check For Probe Module
User's Guide Version 3.16 © October 2016 ® RM500SL 4. Hold the probe module 15 - 90 cm (6 – 36 inches) away from and directly in front of the sound-field loudspeaker. Orientation of the probe module is not critical.
Page 56: Max Tm Spl Setup
User's Guide Version 3.16 © October 2016 ® RM500SL 4. Highlight, then <PICK> [Start test] (which changes to [Stop test]). 5. Hold the probe module about 18 in. (0.5 m) in front of the sound-field speaker. 6. Hold the microphone of a calibrated sound level meter next to the on-ear reference microphone as shown. Set the sound level meter to C weighting and slow.
Page 57: Abr Nhl To Ehl Setup
This Max TM SPL setting will be in effect until you change it. If the limit is exceeded during an on-ear test, the RM500SL will terminate the test and display the message 'MAX TM SPL EXCEEDED'. You must then decide to either reduce the maximum output limit of the hearing instrument or increase the Max TM SPL setting following the steps above.
Page 58: Positioning The Client
User's Guide Version 3.16 © October 2016 ® RM500SL Positioning the client WARNING: Probe tubes are for single-patient use only. Care is required when sliding the probe tube into the ear canal. Be careful not to advance the probe tube further into the ear canal when inserting an earmold or...
Page 59 User's Guide Version 3.16 © October 2016 ® RM500SL Probe tube insertion: The blue lanyard holds the tube in place and the depth marker is at the intertragal notch...
Page 60: On-Ear Measures Screen Setup
To accommodate your working preferences, the appearance of On-ear measurement screens may be changed in several ways. On-ear right or left display The RM500SL can retain and display On-ear test results for two ears. To switch between left and right test results, press the <Left/Right> key. Graph, table or 2cc target format Most on-ear test screens may be viewed in graphic or tabular format.
Page 61: Hide Or Show On-Ear Curves
User's Guide Version 3.16 © October 2016 ® RM500SL To change the scale: Highlight and <PICK> [Scale] to toggle between a dB SPL and dB HL scale. Hide or show on-ear curves To hide or show test curve(s): 1. Highlight, then <PICK> Curve [Hide/Show].
Page 62: On-Ear Instrument Measures
The PCR measures the degree to which a large amount of power is concentrated at a small number of frequencies in the hearing aid output (see Freed & Soli in References). In the RM500SL, the PCR is the ratio of the average power of the dominant frequency components in a 1/12 octave band to the power in the entire band, expressed in dB.
Page 63: On-Ear Manual Control
User's Guide Version 3.16 © October 2016 ® RM500SL 4. Highlight and <PICK> a stimulus level from the list box. 5. Highlight and <PICK> [Start test] 6. Highlight and <PICK> [Continue] to capture the comparison curve once the noise reduction function has responded.
Page 64: Sound Level Meter Using On-Ear Microphones
Sound level meter using on-ear microphones The manual control feature enables the RM500SL to be used as a sound level meter to perform C-weighted, A- weighted or 1/12th octave analysis of sound as measured by the probe and reference microphones. A and C- weighted measurements are limited to frequencies above 100 Hz and the averaging time and update rate are 384 1.
Page 65: Occlusion Effect Test
User's Guide Version 3.16 © October 2016 ® RM500SL 15 Occlusion Effect Test The occlusion effect refers to the unnatural sound of one’s own voice that results from occluding the external ear. It is the result of the high SPL produced at the back of the throat during a closed vowel utterance coupling to the closed ear canal via bone conduction.
Page 66: Recd Measurement
User's Guide Version 3.16 © October 2016 ® RM500SL 16 RECD measurement The RECD (real-ear to coupler difference) may be individually measured to improve the accuracy of hearing aid fittings. The measurement procedure may be accessed by selecting RECD from the On-ear tests list or from the Audiometry poster within Speechmap.
Page 67: Measure Recd
User's Guide Version 3.16 © October 2016 ® RM500SL <Continue> to save it. 8. Highlight and <PICK> [Daily] or [Weekly] to toggle the measurement interval for the coupler response. Measure RECD Connect the RECD transducer to the RECD jack on the front of the test chamber.
Page 68 1. Press <Tests> then highlight and <PICK> [On-ear measures], then highlight and <PICK> [RECD]. 2. Select the RECD coupling method that will be used on the ear. Audioscan software supports both foam eartips and personal earmold, however this choice must be made prior to measurement.
Page 69: Recd Results
User's Guide Version 3.16 © October 2016 ® RM500SL 4. Refer to Positioning the probe tube and insert the probe tube into the ear canal to within 2 - 5 mm of the eardrum. 5. Insert the foam tip into the ear, being careful not to advance the probe tube further into the ear canal. Foam tip insertion depth should be as used with insert phones.
Page 70: Ansi S3.46(2013) Recd
User's Guide Version 3.16 © October 2016 ® RM500SL ANSI S3.46(2013) RECD The ANSI S3.46(2013) Real Ear standard advises RECD measurement protocols that make the RECD a property of the ear itself, and independent of transducer or acoustic coupling. To achieve this accuracy certain conditions must be met in both RECD measurement and Test-box Speechmap coupling.
Page 71 HL threshold correction, and error is minimized. Alternate method #1: RECD On-ear measurement: Audioscan RECD transducer + client’s personal earmold Test-box Speechmap coupling: HA-2 (BTE) coupler This method utilizes the client’s personal earmold for the on-ear RECD measurement. The HA-1 RECD is converted to HA-2 reference with earmold effects retained and is applied in Testbox Speechmap.The error...
Page 72: Recd Facts
2cc coupler measurements, further RECD differences will result. Audioscan uses the HA-2 (BTE) coupler for the transducer calibration, then our RECD transducer and either a foam eartip or the client's personal earmold for the real ear measurement. When a foam tip is used, we subtract the two measurements to get an HA-1 RECD.
Page 73: Insertion Gain
User's Guide Version 3.16 © October 2016 ® RM500SL 17 Insertion Gain Insertion gain is the difference between aided and unaided ear canal SPL (REIG = REAG - REUG). It inherently assumes a sound-field audiogram. For non-linear hearing aids, REIG is stimulus-dependent and the dependency is specific to each hearing aid.
Page 74: Insertion Gain In Hl
This estimate assumes a) the unaided threshold is a sound-field threshold and b) a linear aid (i.e. REIG doesn’t depend on level). The REUR curve uses the right-hand SPL scale and is shown for reference only. Audiometric data entry Threshold data and parameters may be entered by scanning a barcode on a previous Audioscan printout or...
Page 75: Reur Measurement Procedure
User's Guide Version 3.16 © October 2016 ® RM500SL manually using a mouse, the keypad or the numeric keypad on an external keyboard. See Mouse, keyboard, barcode scanner and Input device operation. To enter data from a barcode see Barcode data input and: 1.
Page 76: Rear Measurement Procedure
User's Guide Version 3.16 © October 2016 ® RM500SL data at this time (see Audiometric data entry) or press <Continue> to proceed with the measurement. 4. Highlight and <PICK> REUR (below REAR/REIG test 3). 5. Press <Continue> to accept the default 55 dB SPL Pink noise stimulus and capture the REUR curve OR highlight and <PICK>...
Page 77: Sii Calculation In Insertion Gain
SII calculation in Insertion gain The RM500SL calculates a Speech Intelligibility Index (SII) value for unaided speech at 70 dB SPL (REUR), the target REIG and for each aided test. The calculations use the 1/3 octave band method of ANSI S3.5 –1997 without the 160 Hz band and without masking effects with results expressed as a % by multiplying by 100.
Page 78: Speechmap
1. DSL 5.0 uses RECD values for ages > 119 months from a different source than for ages up to and including 119 months; Audioscan has used the RECD values for a 119 month old for ages > 119 months so all values come from the same study.
Page 79: Dsl 5.0 Changes
6. Broadband output limiting targets are not provided. DSL 5.0 changes The Audioscan version of DSL 5.0 includes provision for bone conduction and ABR threshold, binaural targets, targets for speech levels from 50 to 75 dB SPL, new targets for children, targets for adults and new RECD default values for children (1 month to 10 years) and adults.
Page 80: Camfit In Speechmap
User's Guide Version 3.16 © October 2016 ® RM500SL 3. Input-output curve targets and compression threshold targets are not provided. Such steady-state parameters are of little value in estimating amplified speech levels. Matching amplified speech to the LTASS targets at levels from 50 to 75 dB SPL provides much better assurance that fitting goals are being met.
Page 81: Speechmap Setup
User's Guide Version 3.16 © October 2016 ® RM500SL measures], then highlight and <PICK> [Speechmap]. To change screen setup: see On-Ear Measures Screen Setup, and On-ear or Test box mode. • To set up hearing instrument type: highlight & <PICK> [Instrument], then highlight & <PICK> BTE, •...
Page 82: Screen Tour - Unaided Screen
User's Guide Version 3.16 © October 2016 ® RM500SL You can also choose to have the envelopes of the speech test results automatically hidden (leaving only the LTASS) when you start another test. Highlight and <PICK> the Hide speech envelopes button to toggle between automatically and manually.
Page 83: Screen Tour - Aided Screen
User's Guide Version 3.16 © October 2016 ® RM500SL Screen tour - aided screen On-ear or Test box mode The Speechmap environment provides two hearing instrument verification options: On-ear measures and Test box measures. Using on-ear mode, the stimulus is controlled by the on-ear reference microphone below the ear and SPL in the ear canal is measured by the probe microphone.
Page 84: Sii Calculation In Speechmap
SII calculation in Speechmap The RM500SL calculates a Speech Intelligibility Index (SII) value (in %) for unaided speech at 65 dB SPL and for each aided test. The calculations use the 1/3 octave band method of ANSI S3.5 –1997 without the 160 Hz band and without masking effects with results expressed as a % by multiplying by 100.
Page 85 4. Copy the WAV files from the PC to the top level directory (i.e. not in any folder) of the USB stick. 5. Disconnect the USB stick from the PC and connect it to the USB port on the RM500SL.
Page 86: Creating Wav Files For Speechmap
WAV is a commonly used format for digital audio and can be created/edited by nearly all audio editing and recording software. A WAV file has many properties that define the format of the digital audio. When a USB stick is connected to the RM500SL, Speechmap looks for files in the top level directory that have the following properties:...
Page 87 User's Guide Version 3.16 © October 2016 ® RM500SL Example of user-supplied files, “user.wav”, “user_-4.wav” and “user_+2.5.wav”.
Page 88: Speechmap Fitting Procedures
Measures - Setup, On-Ear Measures - Setup, On-Ear Measures Screen Setup and Speechmap. Assessment data entry Threshold data and parameters may be entered by scanning a barcode on a previous Audioscan printout or manually using a mouse, the keypad or the numeric keypad on an external keyboard. See Mouse, keyboard, barcode scanner, and Input device operation.
Page 89: Assessment Data Choices
User's Guide Version 3.16 © October 2016 ® RM500SL Assessment data choices The following audiometric assessment parameters can be specified in the Speechmap Audiometry setup box. Defaults are the last-used choices if test setup memory has been turned on. See Saving test setup.
Page 90: Fitting To Targets For Soft Speech
User's Guide Version 3.16 © October 2016 ® RM500SL conversion factors may be selected from [Default, Enter]. In either case, an insert earphone is assumed for sound delivery and the appropriate RECD will be applied. Note that, in some facilities, nHL is defined in such a way that it is effectively eHL;...
Page 91: Fitting To Targets For Loud Sounds
User's Guide Version 3.16 © October 2016 ® RM500SL necessary. Fitting to targets for loud sounds 4. Select Test 2 & set stimulus to [MPO]. In test box mode, 90 dB tone bursts are presented at 1/3 octave frequencies in a repeating sequence. In on-ear mode, a single sequence of 85 dB tone bursts is presented when you press <Continue>.
Page 92: Fitting To Targets For Mid-Level Speech
User's Guide Version 3.16 © October 2016 ® RM500SL Fitting to targets for mid-level speech 6. Select Test 3 and set stimulus to [Speech-ISTS], [Speech-std(1)] or [Speech-std(2)] and level to 70. Elongated + symbols show the target range for 70 dB speech LTASS.
Page 93: Verifying Frequency Compression/ Frequency-Lowering Hearing Instruments In Speechmap
User's Guide Version 3.16 © October 2016 ® RM500SL 3. Highlight and <PICK> Test 1 - 4. If this is the first Open test in a session, you will be prompted to mute or turn off the hearing instrument and select the Equalize button on the setup poster. Otherwise, you are reminded to equalize whenever the client or nearby objects are moved.
Page 94 User's Guide Version 3.16 © October 2016 ® RM500SL 3. Select Test 1 and choose 65dB from the level menu. 4. Choose Speech3150, Speech4000, Speech5000 or Speech6300 from the stimulus menu. Note that only the LTASS is shown for these stimuli and targets (if selected) have been suppressed.
Page 95: Fm Fitting And Verification
User's Guide Version 3.16 © October 2016 ® RM500SL FM fitting and verification FM Offset or FM Transparency method in Speechmap (after Platz 2004) It is assumed that the hearing aid has been set up for optimal audibility and maximum output. See other sections of Speechmap Fitting Procedures.
Page 96: Speechmap Technical Details
User's Guide Version 3.16 © October 2016 ® RM500SL 20 Speechmap Technical Details Speechmap provides a variety of stimuli for the testing of non-linear hearing aids with a range of digital processing features. Additional information regarding the stimuli and their analysis is provided in Appendix 2 of the printable User's Guide.
Page 97: Microphone Location Effects
User's Guide Version 3.16 © October 2016 ® RM500SL spectrum is from Cornelisse et al (1991) adjusted to a 1 m reference. 1/3 octave band SPL Add to band SPL for Speech ICRA Pink Loud Noise Noise Voice Chest Boom...
Page 98: Deep Insertion Compensation
User's Guide Version 3.16 © October 2016 ® RM500SL 1600 2000 -4.0 2500 -3.0 3150 -0.4 -2.0 4000 5000 10.4 12.7 6300 8000 -1.6 -0.4 Microphone location effects are added after the overall rms level has been set Note: Microphone location effects remeasured 2014 on KEMAR and referenced to sub-lobe position. Software versions prior to 3.10.56 use MLE values from DSL 4.1 so slight changes in Test box Speechmap should be...
Page 99: Troubleshooting
Audioscan for help. Initialize Function Initializing your Audioscan unit will reset it to default factory settings. This erases the user preference files stored in internal memory. Any custom printer choice, network settings, test setups will need to be re-entered and the user calibrations will also be required.
Page 100: Test Box High Distortion Or Noise
• Computers, fans and air conditioners may be the source of the vibration. Try turning off suspected sources to identify the cause. Relocate the source or the RM500SL on a foam pad. Test box curves inconsistent The test box curves keep changing from test to test.
Page 101: No Test Box Reference Mic. Detected
No on-ear ref. mic. detected No on-ear reference mic. detected. This message may be displayed when starting an On-ear test. It indicates that the RM500SL is not measuring any sound at the on-ear probe reference microphone. Check that a probe microphone assembly is securely plugged into the PROBE socket to the left of the test •...
Page 102: Invalid On-Ear Calibration
User's Guide Version 3.16 © October 2016 ® RM500SL Unplug the test box reference microphone in the test chamber and plug the on-ear probe microphone in its • place. Try Test box calibration using the reference microphone of the on-ear probe microphone in place of the test box reference microphone.
Page 103 User's Guide Version 3.16 © October 2016 ® RM500SL barcodes, try the following: 1. Unplug the scanner from the equipment, then reconnect it. If the problem persists… 2. Print this page on an external printer (see External display, printer, speaker) or from the electronic user’s guide (see Electronic user’s guide).
Page 105: Technical Specifications
User's Guide Version 3.16 © October 2016 RM500SL ® 22 Technical Test Stimuli.......tone, tone burst,pink noise, ..........calibrated or live speech Test stimulus levels..40 to 90 dB SPL in 5 dB steps Specifications Test stimulus levels (inductive).....31.6mA/m per .............(ANSI S3.22 - 2003) Specifications subject to change without notice Test stimulus distortion....<2% at 90dB SPL...
Page 106: Sensory Loss Simulator
User's Guide Version 3.16 © October 2016 RM500SL ® Test stimulus accuracy at reference mic. for tones (2000- 8000 Hz)..........±3 dB SPL Equalization Method...modified pressure method ..........(stored for open fittings) Frequencies per octave (swept tones).....12 Frequencies per octave (tone burst)......3 Analysis bandwidth (speech, noise)....1/3 octave...
Page 108: Glossary
User's Guide Version 3.16 © October 2016 ® RM500SL 23 Glossary AGC, Automatic Gain Control, the means by which gain is automatically controlled by the level of the signal being amplified. (ANSI S3.22) AGC-I, input-controlled AGC (see "input compression"). AGC-O, output controlled AGC (see "output compression").
Page 109 User's Guide Version 3.16 © October 2016 ® RM500SL FOG, full on gain, gain for a 50 dB input SPL with the gain control set to maximum ANSI S3.22) Gain (in dB), output sound pressure relative to input sound pressure, expressed in decibels; gain = 20log10 (output sound pressure / input sound pressure);...
Page 110 User's Guide Version 3.16 © October 2016 ® RM500SL MPO, Maximum Power Output, the maximum SPL that a hearing aid can deliver in response to a steady narrow band input. The stimulus may be pulsed (a tone burst) to avoid discomfort and to approximate an aided UCL measurement stimulus.
Page 111 User's Guide Version 3.16 © October 2016 ® RM500SL REOR is used to evaluate the seal of an earmold. It is not related to the required gain of a hearing aid. REUG, Real-Ear Unaided Gain , difference, in dB as a function of frequency, between the SPL (or BSPL) at a specified measurement point in the ear canal and the SPL (or BSPL) at a field reference point, for a specified sound field, with the ear unoccluded (ANSI S3.46).
Page 112 User's Guide Version 3.16 © October 2016 ® RM500SL uncomfortable. VGA, video graphics adapter. VC, Volume Control, a user-operated gain control. Warble Tone, a frequency-modulated sine wave. The modulating signal is often a low frequency triangle wave. 1. Valente, M: Strategies for Selecting and Verifying Hearing Aid Fittings. New York:Thieme Medical Publishers, Inc.,1994.
Page 113: References
Byrne, D. (1977). The speech spectrum - Some aspects of its significance for hearing aid selection and evaluation. British Journal of Audiology, 11,40-46. Cole, W.A. & Sinclair, S.T. (1998). The Audioscan RM500 Speechmap/DSL fitting system. Trends in Amplification, 3(4):125-139. Corliss, E. L. R. (1990) The ear as a mechanism of communication. Journal of Audio Engineering Society, 38(9):640-652.
Page 114 User's Guide Version 3.16 © October 2016 ® RM500SL Hawkins, D.B., Walden, B.E., Montgomery, A.A., & Prosek, R.A., (1987). Description and validation of an LDL procedure designed to select SSPL90. Ear and Hearing ,8:162-169. Killion, M. C., & Monser, E. L. (1980). "Corfig: Coupler response for flat insertion gain." In G. A. Studebaker and I.
Page 115 User's Guide Version 3.16 © October 2016 ® RM500SL characteristics for young children. Journal of the Academy of Rehabilitative Audiology, 20, 25-38. Seewald, R., Moodie, S. T., Scollie, S. & Bagatto, M. (2005). The DSL method for pediatric hearing instrument fitting: Historical perspective and current issues.
Page 116: Manufacturer Disclosure Statement For Medical Device Security
User's Guide Version 3.16 © October 2016 ® RM500SL 25 Appendix 1 Manufacturer Disclosure Statement for Medical Device Security...
Page 119: Audionote 2.1 Verifit And Rm500Sl Test Signals And Analysis
User's Guide Version 3.16 © October 2016 ® RM500SL 26 Appendix 2 AudioNote 2.1 VERIFIT and RM500SL Test Signals and Analysis For additional details of the signals and their analysis, see the appended AudioNote.
Page 120 Bill Cole BASc, PEng 1 Introduction The Verifit and RM500SL are full-duplex dual-chan- nel audio measurement systems designed for the Some useful facts about broad-band signals testing and fitting of all types of hearing instruments and many assistive listening devices. They provide...
Page 121 ± 3% over 128 ms). Figure 1: 1/3 octave spectra for the pink noise signal and the noise signal specified in ANSI S3.42-1997. 09/01/29 © Etymonic Design Incorporated, 20 Ludwig St., Dorchester, ON, Canada N0L 1G4 USA 800-265-2093 519-268-3313 FAX 519-268-3256 www.audioscan.com...
Page 122 1/12 octave resolution these features disabled. 09/01/29 © Etymonic Design Incorporated, 20 Ludwig St., Dorchester, ON, Canada N0L 1G4 USA 800-265-2093 519-268-3313 FAX 519-268-3256 www.audioscan.com...
Page 123 09/01/29 © Etymonic Design Incorporated, 20 Ludwig St., Dorchester, ON, Canada N0L 1G4 USA 800-265-2093 519-268-3313 FAX 519-268-3256 www.audioscan.com...
Page 124 6. Note that curves are 1/3 octave band levels at 1/12 octave intervals which causes the 1/3 octave bands at 4000, 5000 and 6300 Hz to appear broader than 1/3 octave. For clarity, the Speech3150 curve has been omitted. 09/01/29 © Etymonic Design Incorporated, 20 Ludwig St., Dorchester, ON, Canada N0L 1G4 USA 800-265-2093 519-268-3313 FAX 519-268-3256 www.audioscan.com...
Page 125 Figure 5: Loud vocal effort effect in dB re nominal band levels. Nominal band levels are band levels for an overall SPL of 65 dB. This shaping is applied to the 75 dB SPL speech and ICRA signals. Figure 6: Microphone location effects in dB re nominal band SPL. Nominal band levels are band levels for an overall rms level of 65 dB SPL and average vocal effort in a free sound field.
Page 126 In addition to these well-controlled and repeatable bands. Other analyzers use narrower analysis bands, signals, live speech may be used as a test signal. It sometimes having constant bandwidth. As shown in will, of course, be unequalized and at an uncontrolled Figure 7, this can result in significantly underestimat- level.
Page 127 Figure 8: Output (left) and Gain (right) curves for a linear hearing aid, generated using a swept tone (1) and pink noise analyzed in 1/12 octave bands (2). (Dual view not available in RM500SL) Generally, speech will be detectable if the L1 level is at Real-speech signal analysis or near threshold.
Page 128 100 - 200 ms is likely. The Verifit and ty. The envelope and average are calculated over the RM500SL use a 128 ms analysis time period as an ap- full passage to provide stable and repeatable data.
Page 129 Figure 10: Speech is detectable but not understandable if the 99th percentile is at threshold Figure 11: When LTASS is at threshold, SII ≈ 33% which corresponds approximately to SRT 09/01/29 © Etymonic Design Incorporated, 20 Ludwig St., Dorchester, ON, Canada N0L 1G4 USA 800-265-2093 519-268-3313 FAX 519-268-3256 www.audioscan.com...
Page 130 Figure 12: The highest SII is obtained when the entire speech envelope is above threshold Figure 13: Level of 99th percentile for Speechmap speech signals at average vocal effort 09/01/29 © Etymonic Design Incorporated, 20 Ludwig St., Dorchester, ON, Canada N0L 1G4 USA 800-265-2093 519-268-3313 FAX 519-268-3256 www.audioscan.com...
Page 131 Figure 14: Level of 30th percentile for Speechmap speech signals at average vocal effort Figure 15: Dynamic range of Verifit speech signals at average vocal effort 09/01/29 © Etymonic Design Incorporated, 20 Ludwig St., Dorchester, ON, Canada N0L 1G4 USA 800-265-2093 519-268-3313 FAX 519-268-3256 www.audioscan.com...

audioscan RM500SL User Manual

1 About RM500SL

2 Getting Started

3 General Operation

4 General Setup

5 Networking

6 Single Computer Connection

7 Printing and Storing Results

8 Test Box Measures - Setup

9 ANSI/IEC Hearing Aid Tests

10 Other Test Box Measures

11 Sensory Loss Simulator

12 On-Ear Measures - Setup

13 On-Ear Measures Screen Setup

14 On-Ear Instrument Measures

15 Occlusion Effect Test

16 RECD Measurement

17 Insertion Gain

18 Speechmap

19 Speechmap Fitting Procedures

20 Speechmap Technical Details

21 Troubleshooting

22 Technical Specifications

23 Glossary

24 References

25 Appendix 1

26 Appendix 2

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