Chaotic dynamics and simulation of Japanese vowel sounds

Michael Small, Chi Kong Tse, Tohru Ikeguchi

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

5 Citations (Scopus)


We examine deterministic dynamics in Japanese speech vocalisation patterns. We find that a simple data driven non-parametric model may be employed to accurately and compactly describe the complex dynamic structure of the data. Moreover, we demonstrate that the data is not consistent with a monotonic nonlinear transformation of linearly filtered noise (i.e. determinism in the data cannot be adequately described by the Fourier power spectrum). We then show that for four of the five vowel sounds, the dynamics are not consistent with a noise driven nonlinear periodic orbit, and therefore the underlying dynamical system is likely to be chaotic. In the fifth case (the vowel /a/) we are unable to reject the hypothesis of a noise driven periodic orbit.
Original languageEnglish
Title of host publicationProceedings of the 2005 European Conference on Circuit Theory and Design
Number of pages4
Publication statusPublished - 1 Dec 2005
Event2005 European Conference on Circuit Theory and Design - Cork, Ireland
Duration: 28 Aug 20052 Sep 2005


Conference2005 European Conference on Circuit Theory and Design

ASJC Scopus subject areas

  • Engineering(all)

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