PROBLEM TO BE SOLVED: To provide a synthesizer assembled to various consumer products and naturally sounding by modeling a voice tube effect with a filter parameter and modeling the voice chink source with a source waveform model. SOLUTION: The data for a waveform data base are constructed by constituting a list of a half-syllable (S40), and collecting rows on a boundary area (S42). That is made by constructing all possible combinations of the half-syllables (S44), and excepting the unused combinations (S46). After the half-syllables and boundary lists are edited to be shortened, the sample extracted waveform data answering to respective half-syllables are recorded to be labeled (S52), and the source data and the filter data are extracted from the labeled waveform data (S56). A real natural speech is processed using a cost function through a filter and an inverse filter. The extracted source data and filter data are stored in the waveform data base 60 (S58).
SPEECH SYNTHESIZER OF HALF-SYLLABLE CONNECTION TYPE FORMANT BASE INDEPENDENTLY PERFORMING CROSS-FADE IN FILTER PARAMETER AND SOURCE AREA