This research is focused on mathematical and multiphysical modelling of acoustic-structural couplings of vibrating bodies in interaction with acoustic media and modelling of aeroelastic interactions in biomechanics of human voice. The voice source is modelled by self-excited oscillations of vocal folds caused by air-flow coming from lungs, as well as acoustic pressure modified by frequency-modal properties of the human vocal tract during phonation of vowels.

Collaboration:

• University of Tampere, Finland (prof. Anne-Maria Laukkanen, Ph.D.)
• Faculty of Mechanical Engineering, Czech Technical University in Prague (doc. Dr. Ing. Tomáš Vampola)
• Faculty of Sciences, Palacký University Olomouc (RNDr. Jan Švec, Ph.D. et Ph.D.)

Responsible researcher:
J. Horáček

Research team:
V. Bula, J. Hasnedlová, A. Kosík, P. Pořízková, V. Radolf, P. Šidlof, P. Švancara, V. Uruba, J. Veselý

PIV measurement of air flow in a model of glottis region for vowel [i:] behind the vibrating artificial vocal folds	Aeroelastic model of vocal folds self-oscillations

Related papers:

Šidlof P., Horáček J., Řidký V.: Parallel CFD simulation of flow in a 3D model of vibrating human vocal folds. Computers & Fluids, 2012, doi:10.1016/j.compfluid.2012.02.005 (article in press)

Sváček P., Horáček J.: Numerical simulation of glottal flow in interaction with self oscillating vocal folds: Comparison of finite element approximation with simplified model. Communications in Computational Physics, 2012, Vol. 12 (3), p. 789-806. ISSN 1815-2406. http://www.global-sci.com/

Laukkanen A.M., Horáček J., Krupa P., Švec J.G.: The effect of phonation into a straw on the vocal tract adjustments and formant frequencies. A preliminary MRI study on a single subject completed with acoustic results. Biomedical Signal Processing and Control, 2012, Vol. 7 (1), p. 50-57. ISSN 1746-8094. http://www.sciencedirect.com/science/article/pii/S1746809411000097

Šidlof P., Doaré O., Cadot O., Chaigne A.: Measurement of flow separation in a human vocal folds model. Experiments in Fluids, 2011, Vol. 51 (1), p. 123-136. ISSN 0723-4864.

Kniesburges S., Thomson S.L., Barney A., Triep M., Šidlof P., Horáček J., Brücker Ch., Becker S.: In vitro experimental investigation of voice production. Current Bioinformatics, 2011, Vol. 6 (3), p. 305-322. ISSN 1574-8936.

Vampola T., Laukkanen A.M., Horáček J., Švec J.G.: Vocal tract changes caused by phonation into a tube: A case study using computer tomography and finite-element modeling. Journal of the Acoustical Society of America, 2011, Vol. 129 (1), p. 310-315. ISSN 0001-4966.

Leino T., Laukkanen A.M., Radolf V.: Formation of the actor's/speaker's formant: A study applying spectrum analysis and computer modeling. Journal of Voice, 2011, Vol. 25 (2), p. 150-158. ISSN 0892-1997.

Horáček J., Šidlof P., Uruba V., Veselý J., Radolf V., Bula V.: Coherent structures in the flow inside a model of the human vocal tract with self-oscillating vocal folds. Acta Technica, 2010, Vol. 55 (4), p. 327-343. ISSN 0001-7043.

Vampola T., Horáček J., Vokřál, J.: FE modeling of human vocal tract acoustics. Part II. Influence of velopharyngeal insufficiency on phonation of vowels. Acta Acustica United with Acustica, 2008, Vol. 94 (3), p. 448-460. ISSN 1610-1928.

Vampola T., Horáček J., Švec J.: FE modeling of human vocal tract acoustics. Part I: Production of czech vowels. Acta Acustica United with Acustica, 2008, Vol. 94 (3), p. 433-447. ISSN 1610-1928.

Šidlof P., Švec J.G., Horáček J., Veselý J., Klepáček I., Havlík R.: Geometry of human vocal folds and glottal channel for mathematical and biomechanical modeling of voice production. Journal of Biomechanics, 2008, Vol. 41, p. 985-995. ISSN 0021-9290.

Tokuda I., Horáček J., Švec J., Herzel H.: Comparsion of biomechanical modeling of register transitions and voice instabilities with excised larynx experiments. Journal of the Acoustical Society of America, 2007, Vol. 122 (1), p. 519-531. ISSN 0001-4966.

Švancara P., Horáček J.: Numerical Modelling of Effect of Tonsillectomy on production of Czech Vowels. Acta Acustica United with Acustica, 2006, Vol. 92 (5), p. 681-688. ISSN 1610-1928.

Horáček J., Šidlof P., Švec J.G.: Numerical simulation of self-oscillations of human vocal folds with Hertz model of impact forces. Journal of Fluids and Structures, 2005, Vol. 20 (6), p. 853-869. ISSN 0889-9746.