Hörbehinderungen und deren Konsequenzen für die Kommunikation. HEARCOM Subproject 1

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1 Prof. Dr.rer.nat. Dr.med. Birger Kollmeier, Oldenburg Hörbehinderungen und deren Konsequenzen für die Kommunikation HEARCOM Subproject 1

2 Im Unterprojekt 1 ( Hearing D eficiencies ) beschäftigt sich das europäische integrierte F&E-Projekt HEARCOM mit international vergleichbaren Tests für die Kom m unikationsfähigkeitund die H örbeeinträchtigung.h auptzielistdie nachhaltige Entwicklung einschlägiger Kom m unikationstests für ein H örscreening m it Telefon oderperinternet,sow ie fürdie audiologische Diagnostik und rehabilitative Audiologie in verschiedenen europäischen Sprachen. Eine w ichtige R o le spielt dabei das auditorische Profil, d. h. die Erfassung der individue len H örbeeinträchtigung anhand eines international festgelegten audiologischen M ethodeninventars zur Basis-D iagnostik und zur erweiterten H ör-d iagnostik. Zur Erreichung dieser Ziele wurden bisherdreiverschiedene Sprachtests (weiter-)entwickelt: a) Satztest m it kurzen, sinnvo len Sätzen (z.b. Göttinger Satztest, ho ländische Plom p/versfeld-sätze,englische BKB-Sätze,schw edischerh IN T-Test,...) b) Syntaktisch vorgegebene, sem antische N onsense-sätze (z.b. englische, ho ländische, französische und polnische Variante des O ldenburger Satztestes ( Matrix -Test) c) Zahlen-Tripel Test (ho ländische, deutsche, englische und schw edische Version) Ebenfa ls w erden die folgenden Elem ente des auditorischen Profils vorgeste lt und diskutiert: Hörbarkeit(Audiogram m ) Lautheit(adaptive kategoriale Lautheitsskalierung ACALOS) Zeit-Frequenz-Auflösung (noch zu spezifizierenderpsychoakustischertest) Sprachverständlichkeitsschw e le in R uhe und unterstörscha l(satztest) R äum liches Hörverm ögen (ILD bzw.bild -TestmitSätzen im Störscha l) Subjektive H örbeeinträchtigung (Oldenburgerbzw.GöteborgerInventar) Höranstrengung (Subjektive Skalierung von Sprache in R auschen) Kognitive Fähigkeiten (noch zu spezifizierenderkognitivertest) Ein wichtiges Zwischenzielistdie VerfügbarkeitdieseraudiologischerTestbatterie in m ehreren Sprachen auf einer einheitlichen Software-Plattform (den O ldenburger M essprogram m en bzw. Oldenburg M easurem ent Applications = O M A), die eine Erweiterung des bisherigen deutschen Standards aufden europäischen Sprachraum darste lt.anhand klinischertests so ldie Praktikabilitätund Aussagefähigkeitdieses auditorischen Profils im europäischen Vergleich geklärtw erden.

3 SP1: Tests for Communication performance & auditory impairment Why? Speech understanding essential in communication society Hearing impairment: 18% of population suffer No participation in (noisy) real life

4 SP1 Objectives Develop speech communication tests for telephone usage (screening) for internet usage (self-screening) for professional audiologists across European languages in a sustainable way Develop auditory impairment tests for assessing the individual auditory profile in a sustainable, consensus-based approach Dissemination, Internet, Exploitation

5 SP1 Partners The Netherlands (Amsterdam *2, Rotterdam) Germany (Oldenburg, Bochum, Siemens) Great Britain (Southampton, RNID) Sweden (Linköping) Belgium (Leuven) Total budget: 15,8 manyears

6 Progress so far Recording & (partially) optimization of speech tests in Dutch, German, Swedish, British, French,... Common Audiological Workstation (OMA) in two languages to be marketed by HörTech (see Exhibition) Telephone self-screening test (NL, UK) Consensus on tests & audiological profile

7 Speech test developement 1. Test specification & design 2. Recording of speech material 3. Technical processing & quality check 4. Intelligibility evaluation of test items 5. Final test composition 6. Implementation on OMA 7. Evaluation of test properties Final speech test

8 Short, meaningful sentences Dutch Plomp/Versfeld German: Göttinger Satztest Swedish Hint Sentence tests in Hearcom English BKB Sentences Syntactical fixed nonsense sentences ( OLSA or Matrix test) German Olsa Swedish Hagerman British English Matrix test (stage 4) Dutch Matrix test (stage 4) French Olsa (stage 2) (in cooperation with SP3) Polish Olsa (stage 1) ( )

9 Screening tests Triple number test Dutch public phone number English X-mas RNID action Several callers within few weeks! Swedish (phase 4) German version (see K.Wagener, Hörsaal D, 16:45 Uhr) Sample test: Call Will be introduced to German public December 06 Get ready to meet the demand for follow-up patients!!

10 Impairment tests/auditory profile Consensus for preliminary auditory profile - audibility - dynamic range - suprathreshold peripheral distortion - binaural interaction - cognitive processing deficit Audiological tests selected in 3 categories I. Standard (used for each patient) II. Advanced (i.e., the Hearcom inventory to be implemented and based the profile on) III. Specialized (i.e., additional tests) Implementation on common platform (OMA)

11 WP 2: Impairment tests/auditory profile I: Standard II: Advanced 1. Audibility Audiogram (AC+BC) 2. Loudness Acalos at 0,5 and 3 khz Acalos at other frequencies 3. Frequency-time resolution Combined F-T test (to be selected) 4. Speech perception Speech in quietand noise (SRT or OLSA ) 5. Spatial hearing ILD-test BILD-test JND-azimuth test 6. Subjective judgement, communication and listening effort Oldenburg Inventory/Gothenburg profile Oldenburg Inventory/Gothenburg profile 7. Listening effort Effortscaling for speech in noise Cognitive abilities Lexical decision making or TRT

12 Loudness scaling:acalos Categoricalloudness scaling Low noise noises, 1/3 oct.noise bands and broadband noise Stim ulus duration: 1000 ms Noise centered around 0.5 and 3 kh z Demo Brand and H ohm ann,2002

13 Speech perception and binaural hearing: ILD and BILD Intelligibility Level Difference: Difference in db SNR relative to a reference situation,e.g. S 0 N 0 S+N ILD S N Binaural Intelligibility Level Difference: Difference in db SNR relative to the sam e situation with m onaural presentation S N BILD S N

14 Cognitive test: lexical decision making Swedish version: 3-letter string displayed to subject Demo Fast decision of real word or non-word (A/L) % correct and reaction time is measured Alternative: Text recognition threshold (NL, SP4) Sentence displayed with partially masked letters Sentence recognition tested by repeating the perceived sentence Amount of masking on the display varied to find threshold

15 Demo Oldenburg Measurement Applications (OMA) To be used by professional audiologists Based on German workstation developed & marketed by HörTech ggmbh (BMBFsponsored Centre of competence) Common basic framework (User interface, audiometer interface, calibration, patient database,...) Tests can be added separately Demo

16 SP1 Highlights Speech tests in several European languages in a compatible way Screening test for speech perception in noise for public usage Auditory profile with European consensus Common implementation standard (OMA)

17 Thank you!