Unit selection module and method of chinese text-to-speech...

Details Unit selection module and method of chinese text-to-speech... Unit selection module and method of chinese text-to-speech...

2005-07-22

2009-08-11

Dorvil, Richemond (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

Synthesis

C704S266000, C704S009000

Reexamination Certificate

active

07574360

ABSTRACT:
A unit selection module for Chinese Text-to-Speech (TTS) synthesis includes a probabilistic context free grammar (PCFG) parser, a latent semantic indexing (LSI) module, and a modified variable-length unit selection scheme; any Chinese sentence is firstly input and then parsed into a context-free grammar (CFG) by the PCFG parser; wherein there are several possible CFGs for every Chinese sentence, and the CFG (or the syntactic structure) with the highest probability is then taken as the best CFG (or the syntactic structure) of the Chinese sentence; the LSI module is then used to calculate the structural distance between all the candidate synthesis units and the target unit in a corpus; through the modified variable-length unit selection scheme, tagged with the dynamic programming algorithm, the units are searched to find the best synthesis unit concatenation sequence.

REFERENCES:
patent: 6266637 (2001-07-01), Donovan et al.
patent: 7143036 (2006-11-01), Weise
patent: 2004/0059577 (2004-03-01), Pickering
Chou et al. (“A Chinese Text-to-Speech System Based on Part of Speech Analysis, Prosodic Modeling and Non-Uniform Units”).
Nakamura et al. “Synthesizing Context Free Grammars from Sample Strings Based on Inductive CYK Algorithm,” Lecture Notes in Computer Science col. 1891/2000, pp. 186-195. 2000.

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