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HP RM500SL 17Speechmap ®, REM, S-REM, Speechmap, Speechmap, (real-ear, measurement), (simulated REM), 17.1Section overview, FastFacts 17.2: Speechmap facts

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17Speechmap ®

17.1Section overview

Speechmap presents hearing threshold, UCL and amplified speech spectra as SPL in the ear canal. The fitting goal is to make amplified speech audible and comfortable while avoiding discomfort for loud sounds. Speechmap is normally used in SPL and this guide describes only this usage. See 11.4: SPL or HL scale.

This section covers the following topics:

17.2: Speechmap facts	17.7: Screen tour – unaided screen
17.3: DSL 5.0 in Speechmap	17.8: Screen tour - aided screen
17.4:DSL 5.0 changes	17.9: REM or S-REM mode
17.5: NAL-NL1 in Speechmap	17.10: SII calculation in Speechmap
17.6: Using Speechmap

Related sections are 18: Speechmap Fitting Procedures and 19: Speechmap Technical Details

FastFacts 17.1: Speechmap 17.2 Speechmap facts

Speechmap is a trademarked hearing instrument fitting environment introduced by Audioscan in 1992. It presents hearing threshold, UCL and amplified speech spectra as SPL in the ear canal. The fitting goal is to make amplified speech audible and comfortable while avoiding discomfort for loud sounds. Originally speech was simulated using amplitude-modulated tonal signals. The RM500SL replaces these simulated speech signals with real speech, both recorded and live. For details of the test signals and analysis methods, see 19: Speechmap Technical Details.

Speechmap departs from insertion gain target methods in presenting amplification goals in the context of the residual auditory area, not as an isolated target line, and in the use of real speech, not tones or broad-band noise. This is extremely important for non-linear hearing aids, analog or digital, because their processing is signal-dependent. It also makes provision to correct audiometric data and 2cc coupler measurements for age-related or individually-measured acoustic differences between real ears and the couplers used for calibration and testing.

The Speechmap environment provides two hearing instrument verification options: REM (real-ear measurement) and S-REM (simulated REM). See 17.9: REM or S-REM mode for details.

FastFacts 17.2: Speechmap facts

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RM500SL User’s Guide Version 2.8

Page 70

Contents

Page Table of Contents General Operation General Setup Networking 9 Other Hearing Instrument Tests REM Screen Setup REM Manual Control Sensory Loss Simulator Speechmap ® Speechmap Technical Details Technical Specifications Appendix 1: AudioNote 2.1 VERIFIT and RM500SL Test Signals and Analysis 1About RM500SL 1.2New in this software release Software 2.8 introduces the following significant additions and changes: Sensory Loss Simulator DSL® Note that targets do not appear until an REAR test has been started 1.4Warranty, Trademarks, Acknowledgements Audioscan RM500SL Phone: Fax: Email 1.5Notices for the European Community Electromagnetic Compatability (EMC) FastFacts 1.5: Notices for the European Community 1.6Declaration of EMC compliance for the European Community Guidance and manufacturer’s declaration - electromagnetic emissions 2Getting Started Page 2.4Microphone care Coupler microphone: DO NOT Coupler leakage can cause feedback and erratic response curves Probe microphone: 2.6Mouse, keyboard, barcode scanner built-in keypad mouse keyboard 3General Operation 3.2Input device operation scroll wheel Clicking the right mouse image of the keypad Clicking the left mouse button 3.3Barcode data input Speechmap Insertion gain FastFacts 3.3: Barcode data input 3.4Keypad keys Button FastFacts 3.4: Keypad keys 3.5Menus, lists and buttons Menu Setup Box List Box Screen Buttons 3.6Screen messages Title bar Message bar FastFacts 3.6: Screen messages 3.7Program memory removal and replacement 4General Setup 4.3Display settings screen saver timing background color FastFacts 4.3: Display settings 4.4Saving test setup 5Networking 5.3Networking setup FastFacts 5.3: Networking setup 5.4Single computer connection network hub or switch To set up the PC On the RM500SL, see FastFacts 5.4: Single computer connection 6Printing and Storing Results 6.2Internal printer paper loading To load a new roll of paper: FastFacts 6.2: Internal printer paper loading 6.3Barcodes, headers and comments on printouts date and time lines barcodes fixed header 6.5Printing to a USB memory stick Do not unplug the USB stick until this message disappears FastFacts 6.5: Printing to a USB memory stick 6.6Network printer setup Only PCL 3, PCL 5 or PostScript compatible printers are supported FastFacts 6.6: Network printer setup 6.7Printing to a network file FastFacts 6.7: Printing to a network file 6.8Data storage to a network file FastFacts 6.8: Data storage to a network file 7Hearing Instrument Tests Setup 7.5Hide or Show HIT curves FastFacts 7.5: Hide or Show HIT curves 7.61996 or 2003 ANSI standard FastFacts 7.6: 1996 or 2003 ANSI standard 7.7ANSI test frequencies 7.8HIT calibration facts FastFacts 7.8: HIT calibration facts 7.9Calibration of HIT reference microphone Remove any coupler from the coupler microphone before calibration FastFacts 7.9: Calibration of HIT reference microphone 7.10 Calibration check for coupler microphone FastFacts 7.10: Calibration check for coupler microphone Page 7.12 Positioning the hearing instrument FastFacts 7.12: Positioning the hearing instrument 8ANSI S3.22 Hearing Aid Tests 8.3ANSI S3.22-2003facts and FastFacts 8.3: ANSI S3.22-2003facts 8.4ANSI 1996 Linear and AGC tests 4)Turn the instrument ON 8.5ANSI 2003 Linear and AGC tests minimize maximum FastFacts 8.5: ANSI 2003 Linear and AGC tests 8.6ANSI test results In 1996 tests: In 2003 tests: FastFacts 8.6: ANSI test results 8.7ANSI input-outputcurves NOTE: FastFacts 8.7: ANSI input-outputcurves 8.8ANSI telecoil terminology RTG TMFS SPLITS HFA (or SPA) 8.9ANSI telephone simulator (TMFS) test ‘T’ FastFacts 8.9: ANSI telephone simulator (TMFS) test 8.10 Telecoil test results FastFacts 8.10: Telecoil test results 9Other Hearing Instrument Tests 9.3Multicurve procedure Turn the instrument ON FastFacts 9.3: Multicurve procedure 9.4Multicurve results Output 9.5Spectral analysis in Multicurve FastFacts 9.5: Spectral analysis in Multicurve 9.6Battery drain test FastFacts 9.6: Battery drain test Page 10Real-EarMeasurement Setup 10.3 Calibration of REM probe microphone FastFacts 10.3: Calibration of REM probe microphone 10.4 Calibration check for probe module The probe module should be replaced if it fails this test FastFacts 10.4: Calibration check for probe module 10.5 Max TM SPL setup This Max TM SPL setting will be in effect until you change it MAX TM SPL EXCEEDED FastFacts 10.5: Max TM SPL setup 10.6 ABR nHL to eHL setup Estimated Hearing Level (eHL): 10.7 Positioning the client FastFacts 10.7: Positioning the client 10.8 Positioning the probe tube front Use an otoscope to verify that the tube is 2 to 5 mm from the eardrum FastFacts 10.8: Positioning the probe tube 11REM Screen Setup 12REM Manual Control 12.2 Manual control measurements FastFacts 12.2: Manual control measurements 12.3 Sound level meter using REM probe FastFacts 12.3: Sound level meter using REM probe 13Sensory Loss Simulator 14Occlusion Effect Test 15RECD (real-earto coupler difference) 15.3 RECD coupler response optional FastFacts 15.3: RECD coupler response 15.4 RECD real-earresponse Allow the foam tip to fully expand in the ear negative and unstable FastFacts 15.4: RECD real-earresponse 15.5 RECD results FastFacts 15.5: RECD results 16Insertion Gain 16.3 Insertion gain in HL unaided threshold is a sound-field threshold linear aid 16.4 Audiometric data entry To enter data from a barcode see 3.3: Barcode data inputand: To enter assessment data and parameters manually: Measured REUR should be used with a soundfield threshold Average REUR should be used with headphone or insert phone thresholds 16.5 REUR measurement procedure REUR should be measured only if Transducer = Soundfield FastFacts 16.5: REUR measurement procedure 16.6 REAR measurement procedure FastFacts 16.6: REAR measurement procedure 16.7 SII calculation in Insertion gain FastFacts 16.7: SII calculation in Insertion gain 17Speechmap ® 17.3 DSL 5.0 in Speechmap Desired Sensation Level (DSL) This has resulted in changes to speech targets for children FastFacts 17.3: DSL 5.0 in Speechmap Page 17.6 Using Speechmap To access Speechmap To change screen setup To set up hearing instrument type vTo enter audiometric data, see 18.2: Assessment data entry Page 17.9 REM or S-REMmode For REM mode For mode Note that REM mode should be used for vented or open fittings 17.10SII calculation in Speechmap FastFacts 17.10: SII calculation in Speechmap 18Speechmap Fitting Procedures 18.3 Assessment data choices Target Age Transducer If Insert + Foam or Mold 18.4 Assessment data choices UCL at all 9 audiometric frequencies Binaural REDD 18.5 Fitting to targets for soft speech FastFacts 18.5: Fitting to targets for soft speech 18.6 Fitting to targets for loud sounds In REM mode, the tone sweeps when you press <Continue In REM mode FastFacts 18.6: Fitting to targets for loud sounds Page 18.9 FM fitting and verification Instrument NOTES: FastFacts 18.9: FM fitting and verification 19Speechmap Technical Details 19.3 Stimulus levels FastFacts 19.3: Stimulus levels Page 19.5 Speech signal analysis FastFacts 19.5: Speech signal analysis 20Troubleshooting 20.3 HIT high distortion or noise High distortion and/or noise numbers in an ANSI test FastFacts 20.3: HIT high distortion or noise 20.4 HIT curves inconsistent The HIT curves keep changing from test to test FastFacts 20.4: HIT curves inconsistent Page 20.8 Invalid HIT calibration Invalid HIT Calibration FastFacts 20.8: Invalid HIT calibration 20.9 No REM ref. mic. detected No REM reference mic. detected FastFacts 20.9: No REM ref. mic. detected 20.10Invalid REM calibration 20.11REM speaker overdriven REM speaker overdriven FastFacts 20.11: REM speaker overdriven 20.12Barcode scanner malfunction FastFacts 20.12: Barcode scanner malfunction 21Technical Specifications 22 Glossary FOG, Full On Gain Gain (in dB) Gain control HA-1 HA-2 MAP, minimal audible pressure MPO, Maximum Power Output Modulation NAL NCA REUG Unaided Gain REUR Unaided Response Reference microphone 23 References Page Page 24Appendix 1: AudioNote 2.1 VERIFIT and RM500SL Test Signals and Analysis VERIFIT and RM500SL Test Signals and Analysis 2.2Broad-bandsignals Page 3 Analysis of broad-bandsignals 3.1Pink noise signal analysis Page 3.2Real-speechsignal analysis Figure 7: Example of speech envelope and LTASS Page Figure 11: LTASS for Speechmap speech signals at average vocal effort Page Figure 14: Dynamic range of Verifit speech signals at average vocal effort