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Tihelka, D. and Kala, J. and Matoušek, J. : Enhancements of Viterbi Search for Fast Unit Selection Synthesis . Proceedings of Int. Conf. Interspeech 2010, p. 174-177, 2010.

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Abstract

The paper describes the optimisation of Viterbi search used in unit selection TTS, since with a large speech corpus necessary to achieve a high level of naturalness, the performance still suffers. To improve the search speed, the combination of sophisticated stopping schemes and pruning thresholds is employed into the baseline search. The optimised search is, moreover, extremely flexible in configuration, requiring only three intuitively comprehensible coefficients to be set. This provides the means for tuning the search depending on device resources, while it allows reaching significant performance increase. To illustrate it, several configuration scenarios, with speed-up ranging from 6 to 58 times, are presented. Their impact on speech quality is verified by CCR listening test, taking into account only the phrases with the highest number of differences when compared to the baseline search.

Detail of publication

Title: Enhancements of Viterbi Search for Fast Unit Selection Synthesis
Author: Tihelka, D. ; Kala, J. ; Matoušek, J.
Language: English
Date of publication: 1 Sep 2010
Year: 2010
Type of publication: Papers in proceedings of reviewed conferences
Title of journal or book: Proceedings of Int. Conf. Interspeech 2010
Page: 174 - 177
ISSN: 1990-9772
Date: 27 Sep 2010 - 30 Sep 2010
/ 2019-09-05 16:00:02 /

BibTeX

@INPROCEEDINGS{TihelkaD_2010_Enhancementsof,
 author = {Tihelka, D. and Kala, J. and Matou\v{s}ek, J.},
 title = {Enhancements of Viterbi Search for Fast Unit Selection Synthesis},
 year = {2010},
 journal = {Proceedings of Int. Conf. Interspeech 2010},
 pages = {174-177},
 ISSN = {1990-9772},
 url = {http://www.kky.zcu.cz/en/publications/TihelkaD_2010_Enhancementsof},
}