A unified approach for the numerical simulation of vowels is presented,
which accounts for the self-oscillations of the vocal folds including
contact, the generation of acoustic waves and their propagation through
the vocal tract, and the sound emission outwards the mouth. A monolithic
incompressible fluid-structure interaction model is used to simulate
the interaction between the glottal jet and the vocal folds, whereas
the contact model is addressed by means of a level set application
of the Eikonal equation. The coupling with acoustics is done through
an acoustic analogy stemming from a simplification of the acoustic
perturbation equations. This coupling is one-way in the sense that
there is no feedback from the acoustics to the flow and mechanical
fields.
All the involved equations are solved together at each time step
and in a single computational run, using the finite element method
(FEM). As an application, the production of vowel [i] has been addressed.
Despite the complexity of all physical phenomena to be simulated simultaneously,
which requires resorting to massively parallel computing, the formant
locations of vowel [i] have been well recovered.
Cite as: Degirmenci, N.C., Jansson, J., Hoffman, J., Arnela, M., Sánchez-Martín, P., Guasch, O., Ternström, S. (2017) A Unified Numerical Simulation of Vowel Production That Comprises Phonation and the Emitted Sound. Proc. Interspeech 2017, 3492-3496, doi: 10.21437/Interspeech.2017-1239
@inproceedings{degirmenci17_interspeech,
author={Niyazi Cem Degirmenci and Johan Jansson and Johan Hoffman and Marc Arnela and Patricia Sánchez-Martín and Oriol Guasch and Sten Ternström},
title={{A Unified Numerical Simulation of Vowel Production That Comprises Phonation and the Emitted Sound}},
year=2017,
booktitle={Proc. Interspeech 2017},
pages={3492--3496},
doi={10.21437/Interspeech.2017-1239}
}