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Hanzlíček, Z and Matoušek, J and Tihelka, D. : Experiments on Reducing Footprint of Unit Selection TTS System . Text, Speech and Dialogue, Proceedings of the 16th International Conference TSD 2013, Lecture Notes in Artificial Intelligence, vol. 8082, p. 249-256, Springer, 2013.

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Abstract

The quality of speech produced by modern TTS systems utilizing the unit selection approach is very high. However, the system demands are enormous. The storage requirements are directly proportional to the size of speech unit inventory from which the units are selected during the synthesis process. This paper presents the analysis and reduction experiments performed on two large speech corpora employed by a unit selection TTS system for the Czech language. A procedure for exclusion of utterances from the default speech corpus based on statistics of the usage of particular speech units was proposed. The exclusion of whole utterances from the corpus was preferred over the exclusion of individual speech units in order to preserve the fundamental feature of the unit selection method - selection of possibly longest sequences of speech units. Experiments were performed for several reduction levels. Resulting synthetic speech was evaluated by a proposed statistics based on the concatenation points density. Moreover, the speech quality was evaluated in listening tests. All reduced versions of TTS system were evaluated as similar or slightly worse than the baseline system.

Detail of publication

Title: Experiments on Reducing Footprint of Unit Selection TTS System
Author: Hanzlíček, Z ; Matoušek, J ; Tihelka, D.
Language: Czech
Date of publication: 5 Sep 2013
Year: 2013
Type of publication: Papers in proceedings of reviewed conferences
Book title: Text, Speech and Dialogue, Proceedings of the 16th International Conference TSD 2013
Series: Lecture Notes in Artificial Intelligence
Číslo vydání: 8082
Page: 249 - 256
DOI: 10.1007/978-3-642-40585-3_22
ISBN: 978-3-642-40584-6
ISSN: 0302-9743
Publisher: Springer
Date: 1 Sep 2013 - 5 Sep 2013
/ 2016-01-13 16:38:13 /

Keywords

speech synthesis, TTS, unit selection, reducing footprint

BibTeX

@INCOLLECTION{HanzlicekZ_2013_Experimentson,
 author = {Hanzl\'{i}\v{c}ek, Z and Matou\v{s}ek, J and Tihelka, D.},
 title = {Experiments on Reducing Footprint of Unit Selection TTS System},
 year = {2013},
 publisher = {Springer},
 volume = {8082},
 pages = {249-256},
 booktitle = {Text, Speech and Dialogue, Proceedings of the 16th International Conference TSD 2013},
 series = {Lecture Notes in Artificial Intelligence},
 ISBN = {978-3-642-40584-6},
 ISSN = {0302-9743},
 doi = {10.1007/978-3-642-40585-3_22},
 url = {http://www.kky.zcu.cz/en/publications/HanzlicekZ_2013_Experimentson},
}