Technical Program

Paper Detail

Paper:SP-P9.8
Session:Topics in Speech Synthesis
Time:Wednesday, May 19, 15:30 - 17:30
Presentation: Poster
Topic: Speech Processing: Speech Synthesis (including TTS)
Title: OPTIMIZING SUB-COST FUNCTIONS FOR SEGMENT SELECTION BASED ON PERCEPTUAL EVALUATIONS IN CONCATENATIVE SPEECH SYNTHESIS
Authors: Tomoki Toda; Nagoya Institute of Technology / ATR 
 Hisashi Kawai; ATR, Spoken Language Translation Laboratories 
 Minoru Tsuzaki; ATR, Spoken Language Translation Laboratories 
Abstract: In concatenative speech synthesis, various factors affect thenaturalness of synthetic speech. A cost for segment selectionis calculated by integrating some sub-costs capturing thedegradation of naturalness caused by such factors. In thispaper, we optimize each sub-cost function for converting alinguistic feature or an acoustic parameter into a sub-costbased on perceptual evaluations. Two types of perceptualexperiments are performed with test sets constructed bycontrolling the variations of sub-costs to evaluate theindependent effect of each sub-cost and the interactionsbetween them. We clarify the effectiveness of perceptuallyoptimizing sub-cost functions from a result of a preferencetest comparing synthetic speech before and after the optimization.
 
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