SYSTEM AND METHOD FOR PROSODICALLY MODIFIED UNIT SELECTION DATABASES

摘要

Systems, methods, and computer-readable storage devices to improve the quality of synthetic speech generation. A system selects speech units from a speech unit database, the speech units corresponding to text to be converted to speech. The system identifies a desired prosodic curve of speech produced from the selected speech units, and also identifies an actual prosodic curve of the speech units. The selected speech units are modified such that a new prosodic curve of the modified speech units matches the desired prosodic curve. The system stores the modified speech units into the speech unit database for use in generating future speech, thereby increasing the prosodic coverage of the database with the expectation of improving the output quality.

主权项

1. A method comprising:
selecting, via a processor, speech units from a speech unit database, where the speech units correspond to text; identifying a desired prosodic curve of speech produced from the speech units; identifying an actual prosodic curve of the speech units; modifying the speech units, to yield new speech units, such that a new prosodic curve corresponding to the new speech units matches the desired prosodic curve; and saving the new speech units to the speech unit database.