Festival-si: a Sinhala text-to-speech system

Authors:
Ruvan Weerasinghe;Asanka Wasala;Viraj Welgama;Kumudu Gamage
Affiliations:
Language Technology Research Laboratory, University of Colombo School of Computing, Colombo, Sri Lanka;Language Technology Research Laboratory, University of Colombo School of Computing, Colombo, Sri Lanka;Language Technology Research Laboratory, University of Colombo School of Computing, Colombo, Sri Lanka;Language Technology Research Laboratory, University of Colombo School of Computing, Colombo, Sri Lanka
Venue:
TSD'07 Proceedings of the 10th international conference on Text, speech and dialogue
Year:
2007

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Abstract

This paper brings together the development of the first Text-to-Speech (TTS) system for Sinhala using the Festival framework and practical applications of it. Construction of a diphone database and implementation of the natural language processing modules are described. The paper also presents the development methodology of direct Sinhala Unicode text input by rewriting letter-to-sound rules in Festival's context sensitive rule format and the implementation of Sinhala syllabification algorithm. A Modified Rhyme Test (MRT) was conducted to evaluate the intelligibility of the synthesized speech and yielded a score of 71.5% for the TTS system described.