Speech synthesizing apparatus, method, and program

A speech synthesizing apparatus comprising:

• a storage unit that stores speech segments;
• and
• a segment selection unit that selects a segment suited to a target segment environment from among a plurality of candidate segments selected from the storage unit, wherein
• the segment selection unit performs control to exclude, from a target of the selection, a segment having a prosody change amount whose magnitude relationship with a selection criterion that is determined based on a prosody change amount of the candidate segments, is a predetermined prescribed relationship.

A speech synthesizing method comprising:

• selecting a plurality of candidate segments for a target segment environment from a storage unit that stores speech segments;
• and
• selecting a segment suited to the target segment environment from among a plurality of candidate segments, wherein
• the step of selecting the segment comprises
• performing control to exclude, from a target of the selection, a segment that has a prosody change amount whose magnitude relationship with a selection criterion determined based on a prosody change amount of the candidate segments is a predetermined prescribed relationship.

A computer-readable recording medium storing a program that causes a computer which constitutes a speech synthesizing apparatus, to execute:

• a processing of selecting a plurality of candidate segments for a target segment environment from a storage unit that stores speech segments;
• and
• a processing of selecting a segment suited to a target segment environment from among a plurality of candidate segments, wherein
• the processing of selecting the segment comprises:
• performing control excluding, from a target of the selection, a segment that has a prosody change amount whose magnitude relationship with a selection criterion that is determined based on a prosody change amount of candidate segments, is a predetermined prescribed relationship.