Limitations Of Source-Filter Coupling In Phonation

Authors

  • Debasish Ray Mohapatra The University Of British Columbia
  • Sydney Fels The University Of British Columbia

Keywords:

COUPLING, SOURCE-FILTER, SOURCE FILTER INTERACTION, ARTICULATORY SPEECH SYNTHESIZER, LUMPED ELEMENT MODELS

Abstract

The coupling of vocal fold (source) and vocal tract (filter) is one of the most critical factors in source-filter articulation theory. The traditional linear source-filter theory has been challenged by current research which clearly shows the impact of acoustic loading on the dynamic behaviour of the vocal fold vibration as well as the variations in the glottal flow pulses’ shape. This paper outlines the underlying mechanism of source-filter interactions; demonstrates the design and working principles of coupling for the various existing vocal cord and vocal tract biomechanical models. For our study, we have considered self-oscillating lumped-element models of the acoustic source and computational models of the vocal tract as articulators. To understand the limitations of source-filter interactions which are associated with each of those models, we compare them concerning their mechanical design, acoustic and physiological characteristics and aerodynamic simulation.

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Published

2019-02-21

How to Cite

1.
Mohapatra DR, Fels S. Limitations Of Source-Filter Coupling In Phonation. Canadian Acoustics [Internet]. 2019 Feb. 21 [cited 2023 Feb. 8];46(4):60-1. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/3249

Issue

Section

Proceedings of the Acoustics Week in Canada

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