Didier Demolin

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OBJECTIVES The McGurk-MacDonald illusory percept is obtained by dubbing an incongruent articulatory movement on an auditory phoneme. This type of audiovisual speech perception contributes to the assessment of theories of speech perception. The mismatch negativity (MMN) reflects the detection of a deviant stimulus within the auditory short-term memory and(More)
Amplifying communication is a characteristic of group-living animals. This study is concerned with food recruitment by chemical means, known to be associated with foraging in most ant colonies but also with defence or nest moving. A stochastic approach of collective choices made by ants faced with different sources is developed to account for the(More)
PURPOSE The authors' general aim is to use biomechanical models of speech articulators to explore how possible variations in anatomical structure contribute to differences in articulatory strategies and phone systems across human populations. Specifically, they investigated 2 issues: (a) the link between lip muscle anatomy and variability in lip gestures(More)
MRI techniques have been used to describe velum opening of French vowels. Data based on 18 joined axial slices of 4 mm thickness were recorded with four subjects. Differences in velum opening are calculated from areas measured in the tract between the lowered velum and the back pharynx wall. Results show that for all subjects, the back vowel [symbol: see(More)
This paper describes the real-time MRI technique and its use for the study of speech production. The two major problems, (i) the simultaneous recording of the MR images and the speech signal and (ii) the synchronisation of the images and of the speech signal, are addressed. Measurement accuracy on real-time images is evaluated by comparison with similar(More)
Recent studies have shown that MRI techniques are reliable to measure mid-sagittal cuts of the vocal tract. Three-dimensional images of the vocal tract have been proposed e.g. by Foldvick et al. [6], [7] but despite this advance, these images do not offer any accurate measurement of sagittal cuts or area functions. Advance in MRI performances allows to(More)
M.R.I. techniques have been used to describe velum opening of French vowels. Data based on 18 joined axial slices of 4 mm thickness were recorded with two subjects. Differences in vclum opening are calculated from areas measured in the tract between the lowered velum and the back pharynx wall. A 3 D modelling of this tract is also proposed.
The paper describes the main phonetic characteristics (acoustic, aerodynamic and articulatory) of Kinyarwanda prenasalized stops, focussing on voiceless consonants. We conclude from instrumental observations that the phonetic description of these sounds should be redefined. Consonants previously described as voiceless prenasalized stops in Rwanda are in(More)