| 摘要 |
In a synthetic speech system intonation of a natural utterance is automatically applied to a synthesized utterance. The present invention applies the desired intonation of the natural utterance to the synthesized utterance by aligning voicing sections of the natural utterance to the synthesized utterance. The voicing sections are initially delineated by voiced versus unvoiced, based on default voicing specifications for the synthetic utterance and on pitch tracker analysis of the natural utterance, and an attempt is made to align individual sections thereby. If no initial alignment occurs then a further attempt is made by varying the default voicing specifications of the synthesized utterance. If alignment is still not achieved, then each of the utterances, natural and synthetic, is considered a single large voicing section, which thus forces alignment therebetween. Once alignment occurs, the intonation of the natural utterance is applied to the synthetic utterance thereby providing the synthetic utterance with the desired, more natural, intonation. Further, the synthetic utterance having intonation specification can be graphically displayed so that the user may view and interactively and graphically modify the intonation specification for the synthetic utterance.
|
