Résumé
The growth of the vocal tract is far from linear and is particularly important during the first years of life. How are children able to reach acoustic targets in such a context? To understand the development of speech production, not only in the acoustic space, but with respect to the evolution of articulatory-to-acoustic relationships, it is crucial to study vocal tract morphology. This study aims at proposing specific measurements on the vocal apparatus, not only to study vocal tract growth during ontogeny, but in order to improve the accuracy of articulatory phonetic tools, such as ultrasonography or biomechanical modeling of the vocal tract.