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 (prof. Dr. Ing. Tomáš Vampola)
• Faculty of Sciences, Palacký University Olomouc (RNDr. Jan Švec, Ph.D. et Ph.D.)
• Institute of Macromolecular Chemistry of Academy of Sciences of the Czech Republic (Dr. Ing. Miroslava Dušková-Smrčková)

Responsible researcher:
J. Horáček

Research team:
V. Bula, M. Feistauer, V. Radolf, V. Řidký, P. Sváček, P. Šidlof, P. Švancara, V. Uruba, J. Valášek

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:
Horáček J., Radolf V., Laukkanen A. M.: Low frequency mechanical resonance of the vocal tract in vocal exercises that apply tubes. Biomedical Signal Processing and Control, 2017, Vol. 37, August, p. 39-49. ISSN 1746-8094.
http://hdl.handle.net/11104/0273088

Tyrmi J., Radolf V., Horáček J., Laukkanen A. M.: Resonance Tube or Lax Vox?. Journal of Voice, 2017, Vol. 31 (4), p. 430-437. ISSN 0892-1997.
http://hdl.handle.net/11104/0273087

Horáček J., Bula V., Radolf V., Šidlof P.: Impact stress in a self-oscillating model of human vocal folds. Journal of Vibration Engineering & Technologies, 2016, Vol. 4 (3), p. 183-190. ISSN 2321-3558.
http://hdl.handle.net/11104/0260823

Valášek J., Sváček P., Horáček J.: Numerical solution of fluid-structure interaction represented by human vocal folds in airflow. EPJ Web of Conferences, 2016, Vol. 114, March, 02130-02130. ISSN 2101-6275.
http://hdl.handle.net/11104/0260939

Vampola T., Horáček J., Klepáček I.: Computer simulation of mucosal waves on vibrating human vocal folds. Biocybernetics and Biomedical Engineering, 2016, Vol. 36 (3), p. 451-465. ISSN 0208-5216.
http://hdl.handle.net/11104/0259971

Radolf V., Horáček J., Dlask P., Otčenášek Z., Geneid A., Laukkanen A. M.: Measurement and mathematical simulation of acoustic characteristics of an artificially lengthened vocal tract. Journal of Sound and Vibration, 2016, Vol. 366, p. 556-570. ISSN 0022-460X.
http://hdl.handle.net/11104/0258657

Hampala V., Laukkanen A. M., Guzman M., Horáček J., Švec J. G.: Vocal Fold Adjustment Caused by Phonation Into a Tube: A Double-Case Study Using Computed Tomography. Journal of Voice, 2016, Vol. 29 (6), p. 733-742. ISSN 0892-1997.
http://hdl.handle.net/11104/0257177

Kosík A., Feistauer M., Hadrava M., Horáček J.: Numerical simulation of the interaction between a nonlinear elastic structure and compressible flow by the discontinuous Galerkin method. Applied Mathematics and Computation, 2015, Vol. 267, p. 382-396. ISSN 0096-3003.
http://hdl.handle.net/11104/0251415

Šidlof P., Zörner S., Huppe A.: A hybrid approach to the computational aeroacoustics of human voice production. Biomechanics and Modeling in Mechanobiology, 2015, Vol. 14 (3), p. 473-488. ISSN 1617-7959.
http://hdl.handle.net/11104/0247063

Vampola T., Horáček J., Švec J. G.: Modeling the Influence of Piriform Sinuses and Valleculae on the Vocal Tract Resonances and Antiresonances. Acta Acustica United with Acustica, 2015, Vol. 101 (3), p. 594-602. ISSN 1610-1928.
http://hdl.handle.net/11104/0246448

Vampola T., Horáček J., Laukkanen A. M., Švec J. G.: Human vocal tract resonances and the corresponding mode shapes investigated by three-dimensional finite-element modelling based on CT measurement. Logopedics Phoniatrics Vocology, 2015, Vol. 40 (1), p. 14-23. ISSN 1401-5439.
http://hdl.handle.net/11104/0257783

Feistauer M., Sváček P., Horáček J.: Numerical Simulation of Fluid–Structure Interaction Problems with Applications to Flow in Vocal Folds. Fluid-Structure Interaction and Biomedical Applications. 1. Basel: Birkhäuser, 2014 - (Bodnár, T.; Galdi, G.; Nečasová, Š.), p. 321-394. Advances in Mathematical Fluid Mechanics. ISBN 978-3-0348-0821-7.
http://hdl.handle.net/11104/0240731

Horáček J., Radolf V., Bula V., Laukkanen A. M.: Air-pressure, vocal folds vibration and acoustic characteristics of phonation during vocal exercising. - Part 2: Measurement on a physical model. Engineering Mechanics, 2014, Vol. 21 (3), p. 193-200. ISSN 1802-1484.
http://hdl.handle.net/11104/0239264

Radolf V., Laukkanen A. M., Horáček J., Liu D.: Air-pressure, vocal fold vibration and acoustic characteristics of phonation during vocal exercising. - Part 1: Measurement in vivo. Engineering Mechanics, 2014, Vol. 21 (1), p. 53-59. ISSN 1802-1484.
http://hdl.handle.net/11104/0239263

Pořízková P., Kozel K., Horáček J.: Numerical solution of compressible and incompressible unsteady flows in channel inspired by vocal tract. Journal of Computational and Applied Mathematics, 2014, Vol. 270, p. 323-329. ISSN 0377-0427.
http://hdl.handle.net/11104/0234509

Guzman M., Laukkanen A. M., Krupa P., Horáček J., Švec J. G., Geneid A.: Vocal Tract and Glottal Function During and After Vocal Exercising With Resonance Tube and Straw. Journal of Voice, 2013, Vol. 27 (4), "523.e19"-"523.e34". ISSN 0892-1997.
http://hdl.handle.net/11104/0223083

Feistauer M., Hasnedlová J., Horáček J., Kosík A., Kučera V.: DGFEM for dynamical systems describing interaction of compressible fluid and structures. Journal of Computational and Applied Mathematics, 2013, Vol. 254, p. 17-30. ISSN 0377-0427.
http://hdl.handle.net/11104/0221940

Šidlof P., Horáček J., Řidký V.: Parallel CFD simulation of flow in a 3D model of vibrating human vocal folds. Computers & Fluids, 2013, Vol. 80 (1), p. 290-300. ISSN 0045-7930.
http://hdl.handle.net/11104/0221936

Hasnedlová J., Feistauer M., Horáček J., Kosík A., Kučera V.: Numerical simulation of fluid-structure interaction of compressible flow and elastic structure. Computing, 2013, Vol. 95, Suppl 1, p. 343-361. ISSN 0010-485X.
http://hdl.handle.net/11104/0222469

Pořízková P., Kozel K., Horáček J.: Flows in convergent channel: comparison of numerical results of different mathematical models. Computing, 2013, Vol. 95, Suppl 1, p. 573-585. ISSN 0010-485X.
http://hdl.handle.net/11104/0221905

Pořízková P., Kozel K., Horáček J.: Numerical Simulation of Unsteady Compressible Flow in Convergent Channel: Pressure Spectral Analysis. Journal of Applied Mathematics. Vol. 2012 (545120) , p. 1-9. ISSN 1110-757X.
http://hdl.handle.net/11104/0209372

Laukkanen A. M., Horáček J., Havlík R.: Case-study magnetic resonance imaging and acoustic investigation of the effects of vocal warm-up on two voice professionals. Logopedics Phoniatrics Vocology, 2012, Vol. 37 (2), p. 75-82. ISSN 1401-5439.
http://hdl.handle.net/11104/0208540

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://hdl.handle.net/11104/0208107

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://hdl.handle.net/11104/0206393

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.