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Since Lieberman and Crelin (1971) postulated the theory that Neandertals ''could not produce the range of sounds that characterize human speech'', the potential speech capability of Neandertals has been the subject of hot debate. Lieberman and Crelin claimed that the development of a low laryngeal position was a necessary condition for the realization of a(More)
This paper reports on the articulatory–acoustic relationships involved during vocal tract growth. Data were taken from a database of ten French vowels uttered by 15 speakers ranging in age from 3 years old to adulthood. Despite the important acoustic variation encountered, one feature is displayed by all the speakers: the production of extreme focal vowels(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)
The present article aims at exploring the invariant parameters involved in the perceptual normalization of French vowels. A set of 490 stimuli, including the ten French vowels /i y u e ø o E oe (inverted c) a/ produced by an articulatory model, simulating seven growth stages and seven fundamental frequency values, has been submitted as a perceptual(More)
The development of speech from infancy to adulthood results from the interaction of neurocognitive factors, by which phonological representations and motor control abilities are gradually acquired, and physical factors, involving the complex changes in the morphology of the articulatory system. In this article, an articulatory-to-acoustic model, integrating(More)
Because of recent events and as members of the scientific community working in the field of speech processing, we feel compelled to publicize our views concerning the possibility of identifying or authenticating a person from his or her voice. The need for a clear and common message was indeed shown by the diversity of information that has been circulating(More)
It is well known that the adult's vocal tract is not a uniform scaled up version of a child vocal tract. Considering these morphological differences, what are the articulatory strategies used by the speaker throughout growth to produce the same vowels? Our previous simulation study [1] predicts that a speaker with a newborn-like vocal tract would employ a(More)
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