| 摘要 |
PURPOSE:To obtain excellent speech quality by storing a sound source signal and a spectrum parameter as to a unit speech, controlling the rhythm of the sound source signal and synthesizing a speech by using the spectrum parameter, and correcting the spectrum of the synthesized speech by a filter. CONSTITUTION:The signal is analyzed in speech units, the sound source signal is stored in a storage part 110, and the spectrum parameter is stored in a storage part 350. The storage part 110 selects a required unit speed according to input control information from a terminal 100 and generates a corresponding predicted residue signal. A control part 150 uses information for pitch variation in control information, varies the pitch of the residue signal in each pitch section in a vowel section according to a pitch start position, and adjusts the section length in pitch units according to the specification of information. A storage part 350 outputs a corresponding LPC parameter ai and a synthesizing film 200 generates a synthesized speech (x) by using the predicted residue signal and parameter (a). A calculation part 300 calculates a parameter bi for distortion correction from the signal (a) and synthesized speech (x) and a filter 250 makes corrections with the signals (x) and bi to output a speech x' of good quality from a terminal 360. |
