NDLI: Variable-Length Unit Selection in TTS Using Structural Syntactic Cost

Content Provider	IEEE Xplore Digital Library
Author	Chung-Hsien Wu Hsia, C.-C. Jiun-Fu Chen Jhing-Fa Wang
Copyright Year	2006
Abstract	This paper presents a variable-length unit selection scheme based on syntactic cost to select text-to-speech (TTS) synthesis units. The syntactic structure of a sentence is derived from a probabilistic context-free grammar (PCFG), and represented as a syntactic vector. The syntactic difference between target and candidate units (words or phrases) is estimated by the cosine measure with the inside probability of PCFG acting as a weight. Latent semantic analysis (LSA) is applied to reduce the dimensionality of the syntactic vectors. The dynamic programming algorithm is adopted to obtain a concatenated unit sequence with minimum cost. A syntactic property-rich speech database is designed and collected as the unit inventory. Several experiments with statistical testing are conducted to assess the quality of the synthetic speech as perceived by human subjects. The proposed method outperforms the synthesizer without considering syntactic property. The structural syntax estimates the substitution cost better than the acoustic features alone
Sponsorship	IEEE Signal Processing Society
Starting Page	1227
Ending Page	1235
Page Count	9
File Size	1168291
File Format	PDF
ISSN	15587916
Volume Number	15
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2007-05-01
Publisher Place	U.S.A.
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Speech synthesis Costs Synthesizers Computer science Dynamic programming Heuristic algorithms Concatenated codes Spatial databases Statistical analysis Humans variable-length unit selection Latent semantic analysis (LSA) probabilistic context-free grammar (PCFG) speech synthesis syntactic structure
Content Type	Text
Resource Type	Article
Subject	Acoustics and Ultrasonics Electrical and Electronic Engineering

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