Abstract
In this study, an articulatory characterization of the palatal lateral is provided, using MRI images of the vocal tract acquired during the production of /L/ by several speakers of European Portuguese. The production of this sound involves: a complete linguo-alveolopalatal closure; inward lateral compression of the tongue and a convex shape of the posterior tongue body, allowing airflow around the sides of the tongue; large cross-sectional areas in the upper pharyngeal and velar regions. The lengths and area functions derived from MRI are analysed and used to model the articulatory-acoustic relations involved in the production of /L/. The results obtained in the first simulations show that the vocal-tract model (VTAR) is reasonably able to estimate the frequencies of the first formants and zeros. The lateral channels combined with the supralingual cavity create pole-zero clusters around and above F3, in the frequency range of 2-4.5 kHz.
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Teixeira, A., Martins, P., Oliveira, C., Silva, A. (2012). Production and Modeling of the European Portuguese Palatal Lateral. In: Caseli, H., Villavicencio, A., Teixeira, A., Perdigão, F. (eds) Computational Processing of the Portuguese Language. PROPOR 2012. Lecture Notes in Computer Science(), vol 7243. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-28885-2_36
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DOI: https://doi.org/10.1007/978-3-642-28885-2_36
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