Voice synthesis apparatus

摘要

In a voice synthesis apparatus, a phoneme piece interpolator part acquires first phoneme piece data of a phoneme piece corresponding to a first value of sound characteristic, and acquires second phoneme piece data of the phoneme piece corresponding to a second value of the sound characteristic. The first phoneme piece data and the second phoneme piece data indicate a spectrum of each frame of the phoneme piece. The phoneme piece interpolator interpolates between each frame of the first phoneme piece data and each frame of the second phoneme piece data corresponding to each frame of the first phoneme piece data so as to create phoneme piece data of the phoneme piece corresponding to a target value of the sound characteristic which is different from the first value and the second value of the sound characteristic. A voice synthesizer generates a voice signal having the target value of the sound characteristic based on the created phoneme piece data.