Eventos Anais de eventos
DINAME 2017
XVII International Symposium on Dynamic Problems of Mechanics
Identification of a vocal tract configuration using genetic algorithms
Submission Author:
Gino Colherinhas , GO
Co-Authors:
Álvaro Ferreira, Gino Colherinhas, Marcus Vinicius Girão de Morais
Presenter: Gino Colherinhas
doi://10.26678/ABCM.DINAME2017.DIN17-0156
Abstract
The complexity of the human voice has been subject to various acoustic studies over the last decades. It is possible to construct numeric models of the Vocal Tract (VT) and its complex geometry using experimental data from MRI procedures during the phonation of vowels. In this paper, analytical and numerical models for the acoustic behavior of the VT are constructed using an approximated geometry obtained by experimental measurements. An analytical solution using a transfer matrix method is used to construct the acoustic model. The parameters for the geometry are optimized using a Genetic Algorithm (GA) toolbox developed by the authors to approximate the Frequency Response Function (FRF) of the models to the experimental results. We restrict the length and the cross-section areas of the vocal tract geometry to approximate the frequency and the amplitude of the resonance peaks to the experimental results. The acoustic behavior of the optimized results are compared to BEM and FEM models.
Keywords
Acoustics, Genetic Algorithms, Transfer Matrix Method, Vocal Tract
