Original scientific paper
https://doi.org/10.7305/automatika.2014.01.163
Acoustical–Mechanical Modelling of Voice Tract
Siniša Fajt
; Department of Electroacoustics, Faculty of Electrical Engineering and Computing, University of Zagreb, Unska 3, 10000 Zagreb, Croatia
Darko Gašparović
; Department of Electroacoustics, Faculty of Electrical Engineering and Computing, University of Zagreb, Unska 3, 10000 Zagreb, Croatia
Miljenko Krhen
orcid.org/0000-0002-9395-5249
; Department of Electroacoustics, Faculty of Electrical Engineering and Computing, University of Zagreb, Unska 3, 10000 Zagreb, Croatia
Abstract
Modelling voice tract using an acoustical–mechanical analogy is shown in this article. The process of modelling voice tract is often reduced to one-dimensional acoustical model, i.e. planar waveguide model. With this acousticalmechanical model, computer programs are utilized to analyze and synthesize the voice tract. Hence, it is possible to calculate models which describe the voice tract with satisfactory quality and detail level and these models can be used in practice and applied to particular cases. In this article the process of producing a voice tract model is presented. The process includes the usage of three different computer programs, each of them dedicated to one segment of modelling. Recordings for three speakers were made and the analysis of voice parameters was performed. After the analysis is completed, a two-dimensional model of the voice tract was made, which resulted in a mechanical model consisting of specific number of tubes. Finally, the evaluation procedure for the model is done by applying a software developed specifically for this purpose, in order to determine whether the resulting model truly represents the voice tract of each speaker.
Keywords
Acoustical-mechanical analogies; Vocal tract; Vocal cords; Mechanical oscillator; Modulation; Planar waveguide model; Simulation
Hrčak ID:
118935
URI
Publication date:
27.2.2014.
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