EXTRACTING KINEMATIC PROPERTIES FROM LARGE-SCALE ULTRASOUND CORPORA

Martine Toda (1)

1 LPP - LPP - Laboratoire de Phonétique et Phonologie - UMR 7018

This study describes a highly automated approach to quantifying articulatory movements in ultrasound echography, and offers an example of its application in the examination of the timing of consonant-vowel coordination in typologically contrasted languages (French and Japanese). Despite recent developments in data acquisition and storage facilities, ultrasound requires a timeconsuming post-process consisting of e.g., semimanual tongue contour tracking, that prevents it from being fully involved in large-scale phonetic corpora. To take over this limitation, our approach looks at frame-to-frame pixel-wise variation of brightness. The articulatory targets can then be expressed as local minima of the rate of change. Preliminary results from a bilingual speaker suggest a difference in the time coordination of consonantal and vocalic targets in French and Japanese before and after the intervocalic /k/.

Mots clés: Ultrasound; large-scale phonetic study; consonant-vowel coordination; image processing

Domaines: Linguistique

Martine Toda. EXTRACTING KINEMATIC PROPERTIES FROM LARGE-SCALE ULTRASOUND CORPORA. International Conference on Phonetic Sciences, 2011, Hong Kong SAR China. pp.1994-1997. ⟨halshs-00677110⟩