Christian Abry

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A new articulatory model GENTIANE — elaborated from an X-ray film built on a corpus of VCV sequences performed by a skilled French speaker — enabled us to analyse coarticulation of main consonant types in vowel contexts from a degrees of freedom approach. The data displayed an overall coarticulatory versatility, except for an absolute invariance in the(More)
We used functional magnetic resonance imaging (fMRI) to localize the brain areas involved in the imagery analogue of the verbal transformation effect, that is, the perceptual changes that occur when a speech form is cycled in rapid and continuous mental repetition. Two conditions were contrasted: a baseline condition involving the simple mental repetition(More)
In a recent paper in this journal, Speech Communication 41, 221–231] display a robust asymmetry effect in vowel discrimination, present in infants as well as adults. They interpret this effect as a preference for peripheral vowels, providing an anchor for comparison. We discuss their data in the framework of the Dispersion–Focalisation Theory of vowel(More)
Why does audio [b] give more [d] percepts with visual [g] than with visual [d], as in the present classical McGurk experiment ? An explanation given for this asymmetry could be a language bias towards [d]. As concerns the visual information, and contrary to what is sometimes taken as granted in part of the lipreading literature, visual [g] does not give(More)
Perceptual changes are experienced during rapid and continuous repetition of a speech form, leading to an auditory illusion known as the verbal transformation effect. Although verbal transformations are considered to reflect mainly the perceptual organization and interpretation of speech, the present study was designed to test whether or not speech(More)
This paper describes a speech robotic approach to articulatory synthesis. An anthropomorphic speech robot has been built, based on a real reference subject's data. This speech robot, called the Articulotron, has a set of relevant degrees of freedom for speech articulators, jaw, tongue, lips, and larynx. The associated articulatory model has been elaborated(More)
The purpose of this contribution is to improve our knowledge about the time course of visual and auditory perception with regard to the representation of sound types as different in their phenomenological format as vowels and glides. Our results on the perception of Vowel-to-Vowel gesture via the production of epenthetic glides in between – according to our(More)
Verbal transformation effect – an auditory imagery task equivalent to Necker's cube in visual imagery – recruits a specific working memory, the so-called articulatory or phonological loop. Is this mechanism sensitive to articulatory control constraints, i.e. phase relationships between vowel and consonant gestures? In our experiment, 56 French students(More)