METHOD FOR GENERATING PHONEME DATA, AND SPEECH SYNTHESIS DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a method for generating a phoneme data in speech synthesis device capable of providing a natural composed voice regardless of the pitch frequency of a speech waveform signal to be composed and outputted by selecting a phoneme with a minimum linear prediction code ceptstrum distortion from a group, and using a temporary phoneme data corresponding to this phoneme as phoneme data. SOLUTION: LPC ceptstrum distortion is determined every candidate of a phoneme belonging to a group or each phoneme candidate, and successively stored in a memory area 3 (S14). Each of the LPC ceptstrum distortion CD determined every sound element candidate is read from the memory area 3, and the average value of LPC ceptstrum distortion CD is determined every sound element candidate and stored as an average LPC ceptstrum distortion in the memory area 4 (S15). The sound element candidate with the minimum average LPC ceptstrum distortion is selected from the sound element candidates (S16). The LPC coefficient corresponding to the selected phoneme candidate is read and outputted as an optimum phoneme data (S17).