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- W2058173847 abstract "This paper presents a comparative study of transformations used to compute the area of cross-sections of the vocal tract from the mid-sagittal measurements of the vocal tract. MRI techniques have been used to obtain both mid-sagittal distances and cross-sections of the vocal tract for French oral vowels uttered by two subjects. The measured cross-sectional areas can thus be compared to the cross-sectional areas computed by the different transformations. The evaluation is performed with a jackknife method where the parameters of the transformation are estimated from all but one measurement of a speaker's vocal tract region and evaluated on the remaining measurement. This procedure allows the study of both the performance of the different forms of transformation as a function of the vocal tract region and the stability of the transformation parameters for a given vocal tract region. Three different forms of transformation are compared: linear, polynomial and power function. The estimation performances are also compared with four existing transformations. Cet article présente une étude comparée de différentes transformations utilisées pour calculer la section du conduit vocal à partir de la distance sagittale. Les distances sagittales et les sections du conduit vocal ont été mesurées sur des coupes obtenues par Résonance Magnétique pour les voyelles orales du Français prononcées par deux locuteurs. La section mesurée peut ainsi être comparée aux sections calculées au moyen des différentes transformations. L'évaluation est réalisée au moyen d'une technique de “jackknife”: les paramètres de la transformation sont estimés pour une région du conduit vocal à partir de l'ensemble des données sauf une, qui permet ensuite d'évaluer la transformation. Cette procédure permet d'étudier à la fois les performances des transformations et la stabilité des paramètres des transformations pour chaque région du conduit vocal. Trois formes différentes de transformation ont été comparées: linéaire, polynomiale et exponentielle. Les performances de quatre transformations existantes sont également présentées." @default.
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- W2058173847 date "2002-03-01" @default.
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- W2058173847 title "Mid-sagittal cut to area function transformations: Direct measurements of mid-sagittal distance and area with MRI" @default.
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- W2058173847 doi "https://doi.org/10.1016/s0167-6393(00)00084-4" @default.
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