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Communication Dans Un Congrès Année : 2009

Phonetic labeling of dysphonia

Alain Ghio
Antoine Giovanni
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Résumé

Despite of an intensive research focused on perceptual analysis, results remain uncertain and variable. Our goal was to reconsider perceptual methodology by proposing new approach based a phonetic method. Each phoneme was labeled according to five criteria : roughness, creakiness, breathiness, unvoiced and aspirated, scored as present or absent. The percentage of occurrence of each criteria was calculated considering the total number of phonemes produced by the subject. This allowed us to establish a qualitative profile of each patient’s dysphonia. 80 subjects (20 normal and 60 dysphonic subjects) were recorded for the analysis of a ten syllable phrase. The voices were also submitted to the classical GRBAS perceptive analysis method by a jury of trained professionals. The labelling of the phonemes was performed by a trained speech therapist familiar with phonetic techniques. The results showed that our methodology was strongly correlated to the GRBAS scale and allowed a better charac - terization of dysphonia. This finding implies that perceptual judgments are directly proportional to the number of dyphonia-related events occurring during speech. With regard to linguistic factors, this study indicated that the frequency of abnormalities involving initial phonemes, median accented phonemes, and final phonemes was correlated with the prosodic curve. In the sentence analyzed in this study, the median accented phoneme also occurred in a phonetic context that promoted devocalization. Phonetic context has a strong influence on the occurrence of abnormalities. This new method gives an interesting perspective in dysphonia analysis since it appears to be at time more strict and reliable, and provides a detailed map of the dysphonic events during speech.
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Dates et versions

hal-01616680 , version 1 (13-10-2017)

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  • HAL Id : hal-01616680 , version 1

Citer

Joana Revis, Alain Ghio, Antoine Giovanni. Phonetic labeling of dysphonia. Annual Symposium of the Voice Foundation, 2009, Philadelphia, United States. pp.3145. ⟨hal-01616680⟩
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