VOICE SYNTHESIS DEVICE, METHOD, AND PROGRAM

摘要

There are provided a device and a method for generating a high-quality synthesized voice having a smooth waveform connection by using a small calculation amount and a small-size phoneme piece database. The device includes a pitch frequency calculation unit (1), a pitch synchronization position calculation unit (3), a unit waveform storage unit (6), a unit waveform selection unit (4), a unit waveform generation unit (50), and a waveform synthesis unit (2). The unit waveform generation unit (50) has a conversion ratio calculation unit (501) for calculating a sampling rate conversion ratio from the pitch frequency and the pitch synchronization position, a sampling rate conversion unit (502) for converting the sampling rate of the unit waveform inputted according to the sampling conversion rate, and a unit waveform reselection unit (503) for selecting a unit waveform having a phase required for obtaining a synthesized voice waveform having a smooth unit waveform connection. The waveform synthesis unit (2) arranges the reselected unit waveform on the pitch synchronization position so as to generate a synthesized voice.