A review of lumped-element models of voiced speech

Authors:
Byron D. Erath;MatíAs ZañArtu;Kelley C. Stewart;Michael W. Plesniak;David E. Sommer;Sean D. Peterson
Affiliations:
Department of Mechanical and Aeronautical Engineering, Clarkson University, Potsdam, NY 13699, United States;Department of Electronic Engineering, Universidad Técnica Federico Santa María, Valparaíso, Chile;Department of Mechanical and Aerospace Engineering, The George Washington University, Washington DC 20052, United States;Department of Mechanical and Aerospace Engineering, The George Washington University, Washington DC 20052, United States;Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada;Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada
Venue:
Speech Communication
Year:
2013

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Abstract

Voiced speech is a highly complex process involving coupled interactions between the vocal fold structure, aerodynamics, and acoustic field. Reduced-order lumped-element models of the vocal fold structure, coupled with various aerodynamic and acoustic models, have proven useful in a wide array of speech investigations. These simplified models of speech, in which the vocal folds are approximated as arrays of lumped masses connected to one another via springs and dampers to simulate the viscoelastic tissue properties, have been used to study phenomena ranging from sustained vowels and pitch glides to polyps and vocal fold paralysis. Over the past several decades a variety of structural, aerodynamic, and acoustic models have been developed and deployed into the lumped-element modeling framework. This paper aims to provide an overview of advances in lumped-element models and their constituents, with particular emphasis on their physical foundations and limitations. Examples of the application of lumped-element models to speech studies will also be addressed, as well as an outlook on the direction and future of these models.