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Unit selection speech synthesis using multiple speech units at non-adjacent segments for prosody and waveform generation

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4 Author(s)
Masatsune Tamura ; Corporate Research and Development Center, Toshiba Corporation, 1, Komukai Toshiba-cho, Saiwai-ku, Kawasaki, 212-8582, Japan ; Norbert Braunschweiler ; Takehiko Kagoshima ; Masami Akamine

In this paper, we propose a speech synthesis method that combines a natural waveform concatenation based speech synthesis method and our baseline plural unit selection and fusion method. Two main features of the proposed method are (i) prosody regeneration from selected speech units and (ii) using multiple speech units at non-adjacent segments. The nonadjacent segments is the segment that the previous or following speech units in the optimum speech unit sequence are not adjacent in the database. By using the prosody of selected speech units, the original prosodic expressions and sounds of recorded speech are retained, while discontinuities are reduced by using multiple speech units at non-adjacent segments. MOS evaluations showed that the proposed method provides a clear improvement against the conventional unit selection method and our baseline method.

Published in:

2010 IEEE International Conference on Acoustics, Speech and Signal Processing

Date of Conference:

14-19 March 2010