Communiquer en environnement bruyant :
de l'adaptation jusqu'au forçage vocal

Abstract : This work originates from the observation that some people are more likely than others to develop voice disorders when they often have to communicate in adverse conditions such as noisy environments. This thesis aims at understanding what induces these differences, in order to prevent vocal straining.
To account for these differences in sensibility, previous studies have essentially focused on the variability in physiological constitutions as well as on the environmental factors people subject to vocal straining are confronted with. The work presented here rather explores the hypothesis that these differences could also result from an adaptation behaviour of the speaker to the particular communicative situation.
Firstly, we examined how the different acoustic and articulatory speech modifications can be interpreted as indicators of communicative strategies adopted by the speaker to emerge from the ambient noise, to facilitate the audiovisual perception of phonetic units, to enhance the prosodic cues of discourse structure or to highlight words which are more informative. Several arguments are put forward for considering speech adaptation in noise not only as vocal, inflicted and reflex but also as cognitive, communicational and monitored by the speaker. In order to assess this point, two main databases of semi-spontaneous speech were recorded for which speakers were playing interactive games in noise played over loudspeakers. These methodologies were preliminarily assessed considering our hypotheses on vocal straining and speech adaptation in noisy environments.
The inter-individual comparison of adaptation behaviours lead us to point out some differences in the combined use of theses different communicative strategies –not equivalent in terms of load for the larynx– and in the reorganization of adaptation strategies for varying noise types and levels. Finally these varying adaptation behaviours were related to different laryngeal profiles. Therefore these results offer a new perspective for the study and prevention of vocal straining.
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Submitted on : Sunday, January 13, 2008 - 7:42:04 AM
Last modification on : Wednesday, February 6, 2019 - 3:35:08 PM
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  • HAL Id : tel-00177691, version 1

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Maëva Garnier. Communiquer en environnement bruyant :
de l'adaptation jusqu'au forçage vocal. Linguistique. Université Pierre et Marie Curie - Paris VI, 2007. Français. ⟨tel-00177691⟩

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