Phoneme Resistance and Phoneme Confusion in Noise: Impact of Dyslexia

Noelia Do Carmo Blanco 1 Julien Meyer 2 Michel Hoen 3 Fanny Meunier 1
1 BCL, équipe Langage et Cognition
BCL - Bases, Corpus, Langage (UMR 7320 - UNS / CNRS)
2 GIPSA-VSLD - VSLD
GIPSA-DPC - Département Parole et Cognition
Abstract : Understanding speech in noisy environments is a challenge for almost everyone and particularly so for people with dyslexia. To better understand the phonological processing deficit, which has been posited as a core trait of dyslexia, we wanted to further characterize the impact of noise on speech perception. In this paper, we investigated phoneme resistance to noise for dyslexic and control adults and explored the pattern of errors produced by noise interference. Our aim was to examine differences between phoneme confusion matrices of the two populations. Disyllabic nouns were embedded in noise and participants had to perform an auditory word identification task. Error rates, phoneme resistance and phoneme confusions were compared between a dyslexic and a group of matched controls. Error rate was higher in the dyslexic group. However, no qualitative differences in the profile of errors were found. The coronals /ʃ and s/ were the most resistant phoneme in both groups while the labials /f, m and v/ were the most vulnerable. Although dyslexics showed a more scattered pattern of confusions, the matrices were correlated. Our results confirm a phonological deficit in dyslexia whereas they do not support the hypothesis of qualitative differences in phonological representation between the two groups.
Type de document :
Communication dans un congrès
Interspeech 2018, Sep 2018, Hyperabad, India. Proceedings of Interspeech 2018, pp.2290-2294, Proceedings Interspeech. 〈http://interspeech2018.org/〉. 〈10.21437/interspeech.2018-1271〉
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https://hal.archives-ouvertes.fr/hal-01961066
Contributeur : Julien Meyer <>
Soumis le : mercredi 19 décembre 2018 - 16:48:48
Dernière modification le : jeudi 7 février 2019 - 16:34:32

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Noelia Do Carmo Blanco, Julien Meyer, Michel Hoen, Fanny Meunier. Phoneme Resistance and Phoneme Confusion in Noise: Impact of Dyslexia. Interspeech 2018, Sep 2018, Hyperabad, India. Proceedings of Interspeech 2018, pp.2290-2294, Proceedings Interspeech. 〈http://interspeech2018.org/〉. 〈10.21437/interspeech.2018-1271〉. 〈hal-01961066〉

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