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SPEECH SYNTHESIZER

A speech synthesizer comprising an emotion input section (202) for acquiring the utterance mode of a speech waveform to be subjected to speech synthesis, a prosody creating section (205) for creating a prosody of when a text subjected to a language processing is uttered in the acquired utterance mode, a characteristic sound tone selecting section (203) for selecting a characteristic sound tone observed when the text is uttered in the utterance mode according to the utterance mode, a characteristic sound tone temporal position deducting section (604) for judging from the phoneme sequence of the text, the characteristic sound tone, and the prosody whether or not each phoneme constituting the phoneme sequence is to be uttered in the characteristic sound tone and determining the phoneme at the position where the phoneme is uttered in the characteristic sound tone, and a fragment selecting section (606) and a fragment connecting section (209) for creating a sound waveform with which the text is uttered in the utterance mode and in the characteristic sound tone at the determined utterance position.

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