| 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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