Coarticulation C-à-V en français : interaction avec le type de voyelle, la position prosodique et le style de parole

Abstract : This dissertation examines C-to-V coarticulation in French and its interaction with others sources of variation in order to better understand what modulates and governs variation in speech. Based on data from large speech corpora, we tested how C-to-V coarticulation is a function of: 1) the articulatory properties of the tested segments, i.e. 18.5k vowels /i, e, ɛ, a, x, u, o, ɔ/ (/x/=/ø, œ, ə/) in ALVeolar, UVular et VELar contexts; 2) the prosodic position occupied by the vowels, comparing the degree of coarticulation of 17k CV and VC sequences V=/i, e, a, ɔ/ and C=ALV|UV in initial position of intonational phrases, to similar sequences in internal word position; 3) the speech style, by analyzing the degree of coarticulation in 22k CV and VC sequences, V = /i, E, a, u, ɔ/ (/E/ = /e, ɛ/) and C = ALV|UV, in journalistic and conversational speech. The thesis demonstrates that coarticulation, in addition to being dependent on the articulatory characteristics of segments, is also modulated by other linguistic factors, related to the prosodic organization of the message, and communicational factors depending on the communication situation. Indeed, vowels are more resistant to coarticulation in strong prosodic positions as in formal speech. However, some results suggest that the modulation of coarticulation by prosodic position and speech style have different linguistic functions whose implications for speech variation will be discussed. Finally, a reflection on sound changes related to the universal preference for the anteriorization of back closed vowels will be proposed from the observed differences between the vowels.
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Fanny Guitard-Ivent. Coarticulation C-à-V en français : interaction avec le type de voyelle, la position prosodique et le style de parole. Linguistique. Université Sorbonne Paris Cité, 2018. Français. ⟨NNT : 2018USPCA077⟩. ⟨tel-02147399⟩

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