Third European Conference on Speech Communication and Technology

Berlin, Germany
September 22-25, 1993


Strange Attractors and Chaotic Dynamics in the Production of Voiced and Voiceless Fricatives

Shrikanth S. Narayanan, Abeer A. Alwan

Department of Electrical Engineering, UCLA, Los Angeles, CA, USA

In this study, analysis techniques based on chaos theory were used to analyze far-field acoustic pressure waveforms of the fricatives /s/5 ///, /z/, and /$/. Results indicate the presence of low-dimensional chaos in the fricative time-series data. In addition, it was found that phase trajectories of the steady-state parts of the voiced fricatives were distinctly different from those of the voiceless ones; this observation suggests the potential use of phase trajectories as an effective voiced/voiceless classification technique for fricatives.

Full Paper

Bibliographic reference.  Narayanan, Shrikanth S. / Alwan, Abeer A. (1993): "Strange attractors and chaotic dynamics in the production of voiced and voiceless fricatives", In EUROSPEECH'93, 77-80.