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Article . 2002
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Sistema de conversión texto-voz en lengua gallega basado en la selección combinada de unidades acústicas y prosódicas

Authors: Eduardo Rodríguez Banga; Francisco Campillo Díaz; Elisa Fernández Rei; Francisco Méndez Pazó;

Sistema de conversión texto-voz en lengua gallega basado en la selección combinada de unidades acústicas y prosódicas

Abstract

En esta comunicación se describe un sistema de conversión texto-voz en lengua gallega basado en las denominadas “técnicas de síntesis basadas en corpus”. A diferencia de los tradicionales sintetizadores de voz por concatenación, que normalmente utilizan un conjunto de unidades de síntesis reducido, los sistemas de síntesis basados en corpus consideran múltiples realizaciones de cada unidad y, mediante técnicas de programación dinámica, seleccionan aquella secuencia de unidades que minimiza una función de coste. Por otro lado, tradicionalmente, la generación de la información prosódica se realiza en una etapa previa a la selección de unidades, lo que ocasiona que en muchas ocasiones sea necesario manipular en exceso las unidades seleccionadas con el fin de ajustarlas a la entonación, duración y energía deseadas. En este artículo también se propone la selección conjunta del contorno entonativo y de las unidades de síntesis, con objeto de minimizar la distorsión causada por las modificaciones prosódicas.

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.

Keywords

Text-to-speech, Conversión texto-voz, Intonation, Entonación, Síntesis basada en corpus, Corpus-based synthesis, Síntesis de voz, Speech synthesis

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
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