Thèse de doctorat en Hydrologie
Sous la direction de Isabelle Braud.
Soutenue en 2007
à Grenoble, INPG .
The development of a high quality speech synthesis system represents a considerable workload. Tt requires mainly the knowledge of two domains: linguistics and signal processing. Because of the intrinsic diversity of languages, designing a common universal structure for speech synthesis systems for ail languages still seems elusive. The work of this thesis not only chooses, implements and assesses techniques and theories already developed for other languages, but also contributes to complete and to perfect these techniques and theories to adapt them to Vietnamese language. This thesis also focuses on improving the quality of the synthetic signal specifically for Vietnamese by modeling the acoustic and temporal parameters of prosody of this tonal Asian language, a task not yet undertaken, to our knowledge.
Rhe distributed hydrological models allow to take into account the land surface heterogeneity in the water cycle nodeling. A new method for spatial discretization in nested three levels has been proposed, to adapt the description Jf the catchment heterogeneity to the question to be solved. This discretization is associated with a flexible nodelling, to adapt it to the scale of data and the scale of hydrological processes, which is presented in the second JarL ln order to take into account the unstructured meshes induced by the proposed method, we developed a nodule for the simulation of lateral transfers in the saturated zone. It solves the Boussinesq equation in 2D mstructured meshes. We finally initiated, the coupling of the different modules using this module and modules for ;aturated flow simulation in the river and the non-saturated zone.