MedRx AVANT Series Training Manual Download

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T R A I N I N G

MANUAL

www.medrx-int.com

AVANT

REM

Real Ear Measurements

& Live Speech Mapping

Summary of Contents for AVANT Series

Page 1: ...T R A I N I N G MANUAL www medrx int com AVANT REM RealEarMeasurements LiveSpeechMapping ...

Page 2: ...ns 4 Preparing for Testing 8 Live Speech Mapping 10 Real Ear Measurements 15 Additional Tests and Features 19 Printing 26 Rainbow Passage 27 Limited Warranty 29 0086 www medrx int com DISTRIBUTOR MAICO Diagnostics GmbH MedRx International Sales Sickingenstr 70 71 10553 Berlin Germany Tel 49 30 70 71 46 50 Fax 99 E mail medrx sales maico biz Web www medrx int com ...

Page 3: ...to the MedRx AVANT REM Installation Manual for assistance The Installation Manual is included in the original AVANT Audiometer packaging in both printed and PDF formats The scope of this manual is to get you up and running with your AVANT REM Real Ear Measurement System Please consult the interactive Help System within the software for more detailed information of features and functionality To acc...

Page 4: ...itional information and instructions for the specific section of the software you are working in Launching the REM Software Stand Alone NOAH Launch NOAH Launch Avant REM module following NOAH procedures Double Click the AVANT REM shortcut on your Windows Desktop Basic Software Option Several options are available which allow the user to customize the AVANT REM Software to meet their needs Access t...

Page 5: ... Use the Show Targets pull down to underlay DSL 5 0 or NAL NL2 targets below your speech maps The REM tab sets the default look and behavior of conventional Real Ear Measurements NOTE Remember that more information is always available in the Interactive Help System by Clicking the Help Icon or pressing the F1 key The MHA HLS tab sets the default look and behavior of the Master Hearing Aid and Hear...

Page 6: ...described below For more in depth information consult the interactive Help system within the software The General Tab configures the overall Avant REM behavior with respect to other Windows programs specifically NOAH Use the Audio A Tab to select the proper audio device for your Avant REM This tab also provides access to the Windows Audio controls Use the Audio B Tab to select the proper audio dev...

Page 7: ...ufacturer s instructions Loudspeaker Output Selection There are two possible loudspeaker selections Either the Line Out selection that uses powered speakers as shown on the following pages or the internal amplified speaker output Red and Blue connectors can be used with passive speakers Go to the Tools menu and select the speaker selection you want A check mark will be shown next to the selection ...

Page 8: ...patient normally sits or about 1 meter from the speakers Click on Start to begin the calibration and wait until it ends Observe the response curve to flatten itself out The darker curve is showing the response used by the equalization algorithm the lighter curve is showing the current microphone input Use of the powered speaker supplied with this device is recommended Calibrating the Probe Tube Fo...

Page 9: ...rom the gray target curve replace the probe tube and re calibrate If this does not correct the problem contact MedRx technical support at 888 392 1234 The calibration date is available under the Function Calibrate Calibration Information tabs Return Probe Microphones to MedRx for annual re calibration Annual re calibration of the Avant REM Probe Microphones is recommended There are no user repaira...

Page 10: ...ne of these have occurred you may manually enter the audiometric data into the AVANT REM software as follows 1 Launch the audiometric module by Clicking on the Audio button on the right side of the AVANT REM main window 2 Using your mouse select the test ear 3 Select the test type Air 4 Enter thresholds by Clicking the intersection points with the mouse You may also enter the audiogram by selectin...

Page 11: ...ctrum Canoe It is also possible to underlay DSL IO or NAL NL2 targets on this screen Click Options in the text menu bar on the top of the screen to select and configure these underlays to meet the needs of your practice Speech Mapping with Recorded Inputs For those who prefer a recorded repeatable stimulus for Speech Mapping the software provides several digital audio files These are accessed by C...

Page 12: ... also possible to underlay DSL IO or NAL NL2 targets on this screen Click Options Show Targets in the text menu bar on the top of the screen to select and configure these underlays to meet the needs of your practice The screen shot below provides an overview of all the tools and controls on the Live Speech Mapping screen For more information on these features please consult the Interactive Help sy...

Page 13: ...tments From the Avant REM main screen Click the NOAH LSM button The REM window will reduce in size and float on top of the NOAH screen Open the fitting module from the NOAH Module Selection Screen Use the text menus and green start and red stop buttons in the floating LSM window to make Speech Mapping measurements Make necessary changes to the instrument based on these measurements To make adjustm...

Page 14: ...ideo Otoscopes refer to the Help system within the software by pressing the F1 key or Clicking the Help icon or text menu 2 Basic Diagnostics a Using your audiometer and NOAH measure and record the following values b Pure Tone Air and Bone conduction thresholds c Narrow Band Noise or Pure Tone UCL at 500 1000 2000 and 4000 Hz d Other tests if needed in your practice or jurisdiction 3 Position pati...

Page 15: ...ttons 2 Select the test ear 3 Select the test stimulus 4 Click Start The test will stop itself after sufficient data has been collected and averaged 5 If you wish to delete a curve simply select it with your mouse left Click and then Click the Discard icon or press the Delete key 6 When all measurements are complete Click the Back arrow to return to the AVANT REM Main Screen Descriptions of the va...

Page 16: ...strument Manufacturing Association EHIMA This signal is based on natural recordings of 21 female speakers in six different languages American English Arabic Chinese French German and Spanish The signal is largely non intelligible because of segmentation and remixing The speech material was filtered to Byrne LTASS Crest Factor 9 23 19 3dB Rainbow Passage Natural recordings of several voices recitin...

Page 17: ... The noise is approximately weighted to International Long Terms Average Speech Spectrum ILTASS as described in Byrne et al 1994 The noise with this weighting is preferred for hearing aid fitting because its spectrum is the best approximation of the spectrum of real human speech Crest Factor BBN 4 22 12 5dB PRN 3 47 10 8dB Speech ANSI The noise is approximately weighted to ANSI S3 42 Speech Noise ...

Page 18: ... canal for a specified sound field with the hearing aid in place and turned on The REAG is simply the REAR expressed as gain rather than SPL Selecting REAG allows you to see the gain at each frequency for each of the REAR curves measured REOR measures the effect on the natural external ear effects resulting from inserting an ear mold or a hearing instrument before it is turned on into the ear cana...

Page 19: ...er rather than in the uncooperative client s ear This is particularly important in the case of children whose small volume ear canals enhance high frequency amplification more so than in average adults This is an essential consideration in determining the maximum output of the hearing instrument If RECD data is present the software will display an option to choose between Ear or Coupler measuremen...

Page 20: ...ss than one meter from the speaker and facing the speaker Place the hearing instrument and the probe microphone tube as for all REM measurements Select START to open the measurement type selection screen Choose the REAR with a Hearing Aid option Select OK to begin the test and wait until it concludes REARwithaninsertheadphone Place the probe microphone tube as for all REM measurements but use the ...

Page 21: ...red to skip the measurement see note below Select OK and wait until the test completes The calculated RECD curve is automatically displayed on the screen and is stored in memory for correction of subsequent coupler measurements made from the RECD function NOTE If the REAR and the coupler response were measured with the insert headphone the program saves the coupler response curve for later use In ...

Page 22: ...e calibrated probe tube in the ear canal as instructed previously 2 Place the hearing instrument in the ear without disturbing the probe tube 3 Begin a Live Speech Mapping session as instructed previously 4 When feedback is present Click the Start button 5 Acoustic feedback appears as a large spike in the LSM response If a more specific frequency analysis of the feedback is desired change the reso...

Page 23: ...n the control panel See below for instructions on how to use the Record option The HLS output is directed to the free field loudspeakers 4 Select Normal to play the input signal as a person with normal hearing would perceive it Select Simulated to turn on the simulation of the client s hearing loss Toggle between these selections as necessary 5 The Reset option restores the audiogram to the origin...

Page 24: ...patient s Audiogram The NAL RP is applied by default A new rule can be selected from the list on the right side of the display A volume adjustment bar allows for manual adjustment of the output level The control panel on the right of the display provides options for input signal source and the task icons for Normal and Simulate The Master Hearing Aid applies gain separately for each ear If audiogr...

Page 25: ...omatically imported to this screen 3 Select the input signal type File CD Mic or Record 4 Select Monaural or Binaural 5 Select the Normal icon which will send the input signal through to the inserts without modification The patient is listening to the signal without any amplification benefit Select the Simulate icon to modify the input signal according to the selected rule This selection allows th...

Page 26: ...menu Click one of the following options Print Setup selects the printer you want the report to be sent to Avant REM Software prints to any installed Windows printer Page Setup Allows you to set margin sizes and the default text header for your reports Print Preview Shows you what your report will look like before you print it Print Sends the report to the printer ...

Page 27: ...bow is a division of white light into many beautiful colors These take the shape of a long round arch with its path high above and its two ends apparently beyond the horizon There is according to legend a boiling pot of gold at one end People look but no one ever finds it When a man looks for something beyond his reach his friends say he is looking for the pot of gold at the end of the rainbow ...

Page 28: ...urope Non ionizing electromagnetic radiation Special Disposal Required Humidity Limitation Caution General warning sign Temperature limitation Read the instruction manuals for safe usage of the device operating instructions Class II equipment Start of action Stop of action Percentile Setup Calibration Loudspeaker Speaker Headphones Microphone Recording The date of manufacture is shown on the origi...

Page 29: ...ive heat greater than 37 78ºC and water liquid damage Repair or replacement of the system as provided under this warranty is the sole and exclusive remedy of the purchaser MedRx shall not be liable for any consequential or incidental damages or for breach of any express or implied warranty Except to the extent of applicable law any implied warranty merchantability or fitness of this product is lim...

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