Caractériser la distinctivité du système vocalique des locuteurs

The characterization of the distinctivity in speakers’ vowel production. The objective of our study is to characterize the French speakers thanks to a cue of distinctiveness in the production of vowel in spontaneous speech. Distinctiveness is most often derived from the dispersion of vowel space. Previous work (Huet & Harmegnies, 2000) has proposed a more dynamic cue taking into account the relationship between the dispersion of the whole vowels of the system and the average dispersion of each vowel in its category. To go on with this view we propose a cue of distinctiveness (ID) in order to provide speakers’ profiles. Our first results confirm differences between speakers. The cue itself is not always related to the overall dispersion of the system but highlights a more precise interaction between the vowel and the system. Following this first step, we plan to evaluate this ID according to different factors (language, type of speech, pathological populations). MOTS-CLES : distinctivité ; acoustique; voyelles; parole spontanée