Sistema de conversión texto-voz en lengua gallega basado en la selección combinada de unidades acústicas y prosódicas
- Méndez Pazó, Francisco
- Fernández Rei, Elisa
- Rodríguez Banga, Eduardo
- Campillo Díaz, Francisco
ISSN: 1135-5948
Year of publication: 2002
Issue Title: XVII Congreso de la SEPLN. Universidad de Valladolid, 11-13 septiembre 2002
Issue: 29
Pages: 153-158
Type: Article
More publications in: Procesamiento del lenguaje natural
Abstract
In this contribution we describe a corpus-based text-to-speech system for Galician. While traditional concatenative speech-synthesis systems generally employ a quite reduced set of speech units, corpus-based synthesis systems consider many instances of every unit and, by means of dynamic programming techniques, select the sequence of units that minimizes a cost function. With reference to prosody, traditionally, the generation of the prosodic information is carried out in a previous stage to unit selection. This fact implies that, in many cases, the selected speech units must be manipulated in excess in order to fit the desired prosody. In this paper we also propose a method for combined selection of the intonation contour and the sequence of speech units in order to minimize the distortion due to prosodic modifications.