To give a more suitable response in accordance with speech from a user.
A voice recognition part 24 performs voice recognition when acquiring feature parameters of a voice collected by a microphone 11. The voice recognition part 24 informs a melody generation part 32 or the like of a prescribed keyword when detecting the prescribed keyword. A voice pitch analysis part 28 analyzes the voice of the keyword on the basis of an indication from the melody generation part 32 and extracts a pitch frequency of the voice. The voice pitch analysis part 28 selects a musical scale corresponding to the extracted pitch frequency and informs the melody generation part 32 of the musical scale. The melody generation part 32 reads out melody data stored in a melody data storage part 33 and converts the melody data on the basis of the musical scale informed from the voice pitch analysis part 28. New melody data generated by the melody generation part 32 are reproduced by a voice synthesis part 34 and are outputted from a speaker 14.
ONOKI WATARU
HANYA AKIRA
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