4th International Conference on Spoken Language Processing

Philadelphia, PA, USA
October 3-6, 1996

Speech Synthesis Using a Nonlinear Energy Damping Model for the Vocal Folds Vibration Effect

Hiroshi Ohmura, Kazuyo Tanaka

Electrotechnical Laboratory, Ibaraki, Japan

From a theoretical viewpoint, the vocal folds vibration affects the vocal tract transfer characteristics through nonlinear time-varying interaction between the glottis and vocal tract. Therefore, it is crucial to investigate and model such effects in order to improve voice quality in parametric rule-based speech synthesis systems. In this paper, we first conducted analytic experiments on the vocal folds vibration effects on the appeared in formant energy damping patterns and then modeled them by a nonlinear 2nd order differential equation for speech synthesis. At last, we confirmed the feasibility of the nonlinear model by speech wave reconstruction experiments.

Full Paper

Bibliographic reference.  Ohmura, Hiroshi / Tanaka, Kazuyo (1996): "Speech synthesis using a nonlinear energy damping model for the vocal folds vibration effect", In ICSLP-1996, 1241-1244.