ISCA Archive ICSLP 1994
ISCA Archive ICSLP 1994

Chaotic characteristics of voice fluctuation and its model explanation: normal and pathological voices

Yuki Kakita, Hitoshi Okamoto

This paper reports on an analysis of vocal irregularity in pitch and amplitude in terms of (1) the "pseudo-phase-portrait," (2) the "fractal dimension" of the fluctuation, and (3) a model generating the fluctuation. A simple mathematical model generating the time series of fluctuation is proposed. Using this model, varying aspects of fluctuations as well as of the pseudo-phase-portraits are successfully described with a single control parameter. We also report that, by the simulation based on the model, a resultant intermittent type of fluctuation can manifest the chaotic behavior.


Cite as: Kakita, Y., Okamoto, H. (1994) Chaotic characteristics of voice fluctuation and its model explanation: normal and pathological voices. Proc. 3rd International Conference on Spoken Language Processing (ICSLP 1994), 639-642

@inproceedings{kakita94b_icslp,
  author={Yuki Kakita and Hitoshi Okamoto},
  title={{Chaotic characteristics of voice fluctuation and its model explanation: normal and pathological voices}},
  year=1994,
  booktitle={Proc. 3rd International Conference on Spoken Language Processing (ICSLP 1994)},
  pages={639--642}
}