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Sammanhangets påverkan på språkförståelse: Sammanhang som underlättar för förståelse när tal är svårt att förstå
Linköping University, Department of Computer and Information Science.
2015 (Swedish)Independent thesis Basic level (degree of Bachelor), 12 credits / 18 HE creditsStudent thesisAlternative title
The contextual impact on the ability to understand language : Contexts that facilitates understanding when speech is hard to understand (English)
Abstract [sv]

Faktorer som påverkar hur svårt det är att uppfatta tal kan till exempel vara störande ljud i omgivningen eller den individuella hörselförmågan. I denna studie har undersökts om semantisk koherens och tidigare kunskaper, i form av textprimes, ökar den perceptuella tydligheten av tal som degraderats med hjälp av metoden Noise Vocoding (se: Shannon, Zeng, Kamath, Wygonski, & Ekelid, 1995). Denna studie visade att textprimes som presenterades innan en uttalad mening som degraderats, ökade den perceptuella tydligheten av ljudet jämfört med om inget prime presenterats. Semantiskt sammanhängande meningar visade sig också öka den perceptuella tydligheten av en uttalad mening som var degraderad.

Studien visade att ett matchande prime ledde till signifikanta resultat för högre uppfattad perceptuell tydlighet, oberoende av om meningen var semantiskt sammanhängande eller inte. Semantiskt sammanhang ökade uppfattad perceptuell tydlighet signifikant för talade meningar som presenterades efter ett matchande prime, eller som var mindre degraderade. Den upplevda perceptuella tydligheten var som högst när en uttalad mening som degraderats var både semantiskt sammanhängande och presenterades efter ett matchande prime. Detta visar på att tidigare kunskaper och semantiskt sammanhang påverkar perceptuell tydlighet, både enskilt och tillsammans.

Abstract [en]

How hard it is to understand speech can be affected of noise in the surrounding and/or the individual ability to hear. This study examines if semantic coherence and previous knowledge in the form of textprimes, increases the perceptual clearity of speech that is degraded by Noise Vocoding (see: Shannon, Zeng, Kamath, Wygonski, & Ekelid, 1995). This study showed that the perceptual ability of a degraded speech sentence increased if the sentence was presented after a textprime, compared to if no prime was shown. The perceptual clearity of degraded speech sentences was also increased if the sentence was semantically coherent. This study showed significant results for increased perceptual clearity for the condition with matching primes, independent of if the sentence was semantically coherent or not. The perceptual clearity of spoken sentences was significantly increased if the sentence was semantically coherent, and presented after a matching prime, or if the speech-sentence was less degraded. The perceptual clearity was experienced as highest when a speech sentence was both semantically coherent and presented after a matching textprime. This shows that previous knowledge and semantic context influences perceptual clearity, both together and as separate variables. 

Place, publisher, year, edition, pages
2015. , 41 p.
National Category
Psychology
Identifiers
URN: urn:nbn:se:liu:diva-125124ISRN: LIU-IDA/KOGVET-G--15/031--SEOAI: oai:DiVA.org:liu-125124DiVA: diva2:903024
Subject / course
Cognitive science
Supervisors
Examiners
Available from: 2016-02-15 Created: 2016-02-12 Last updated: 2016-02-15Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
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Language
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  • sv-SE
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Output format
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