8. The speech synthesis information editing apparatus according to claim 7 , wherein the edition processing unit is configured to move a position of the editing point on the time base within the sounding interval of the phoneme represented by the phoneme information by an amount depending on a type of the phoneme when the time variation in the feature is updated.
8. The speech synthesis information editing apparatus according to claim 7 , wherein the edition processing unit is configured to move a position of the editing point on the time base within the sounding interval of the phoneme represented by the phoneme information by an amount depending on a type of the phoneme when the time variation in the feature is updated. 9. The speech synthesis information editing apparatus according to claim 8 , wherein the edition processing unit is configured to move a position of the editing point within the sounding interval of the phoneme by an amount depending on a type of the phoneme such that a movement amount of an editing point for a phoneme of vowel type is different from a movement amount of an editing point for a phoneme of consonant type.