SPEECH SYNTHESIZING METHOD AND APPARATUS

A speech synthesizing apparatus acquires a synthesis unit speech segment divided as a speech synthesis unit, and acquires partial speech segments by dividing the synthesis unit speech segment with a phoneme boundary. The power value required for each partial speech segment is estimated on the basis of a target power value in reproduction. An amplitude magnification is acquired from the ratio of the estimated power value to the reference power value for each of the partial speech segments. Synthesized speech is generated by changing the amplitude of each partial speech segment of the synthesis unit speech segment on the basis of the acquired amplitude magnification.