| 摘要 |
PROBLEM TO BE SOLVED: To synthesize speech similar to natural speech by enhancing a matching degree of phoneme environment, etc., in synthesizing in a speech synthesis device selecting and connecting an optimal element piece belonging to a synthesis unit. SOLUTION: A speech synthesis device is configured comprising a pre- processing part 12 to break down an input character string into phoneme units, a plurality of waveform element pieces cut out of natural speech in the units of utterance and a plurality of single syllables, storing means 192 and 193 to store prosodic parameters of each single syllable, an element piece selection part 14, and element piece connecting means 15, 16, and 17 to generate synthesized speech by connecting the selected waveform element pieces in order of the input character string. The element piece selection part 14 selects optimal element piece corresponding to phoneme units to the metrical environment, referred to both of the extracted environment and the prosodic parameter. |
