First Experiments on Text-to-Speech System Personification

Authors:
Zdeněk Hanzlíček;Jindřich Matoušek;Daniel Tihelka
Affiliations:
Faculty of Applied Sciences, Dept. of Cybernetics, University of West Bohemia, Plzeň, Czech Republic 306 14;Faculty of Applied Sciences, Dept. of Cybernetics, University of West Bohemia, Plzeň, Czech Republic 306 14;Faculty of Applied Sciences, Dept. of Cybernetics, University of West Bohemia, Plzeň, Czech Republic 306 14
Venue:
TSD '09 Proceedings of the 12th International Conference on Text, Speech and Dialogue
Year:
2009

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Abstract

In the present paper, several experiments on text-to-speech system personification are described. The personification enables TTS system to produce new voices by employing voice conversion methods. The baseline speech synthetizer is a concatenative corpus-based TTS system which utilizes the unit selection method. The voice identity change is performed by the transformation of spectral envelope, spectral detail and pitch. Two different personification approaches are compared in this paper. The former is based on the transformation of the original speech corpus, the latter transforms the output of the synthesizer. Specific advantages and disadvantages of both approaches are discussed and their performance is compared in listening tests.