Modelling of voice production based on biomechanics
Project goals
The topic of the project is the development of new mathematical models of vocal folds vibration in interaction with airflow, based on the latest advances in the numerical methods suitable for modelling of flow-structure interaction problems by Finite Element Method (FEM). The unsteady viscous airflow will be described by the unsteady Navier-Stokes equations and because of large amplitudes of vocal fold vibrations the moving grids for the flow field will be considered using the Arbitrary Lagrangian Eulerian (ALE) method. Suitable stabilization procedure of the numerical schemes will be developed as well as the robustness of the solution. The aim of the project is to develop new, more complex and realistic models that should result in numerical simulations of self-oscillations of the vocal folds excited by airflow. This will enable to model also various pathological changes in the vocal fold tissue, and some post surgery states in relation to the changes of the airflow and vocal folds vibration regimes
Keywords
biomechanics of human voiceaeroelasticityfinite element methodflow-structure interactionmodelling of unsteady flow of a real fluidnumerical simulationsspeech acousticsphoniatryphoneticsmodelling of voice disorders
Public support
Provider
Ministry of Education, Youth and Sports
Programme
COST
Call for proposals
COST 7 (SMSM2009OC4)
Main participants
—
Contest type
VS - Public tender
Contract ID
1147/2010-32
Alternative language
Project name in Czech
Modelování tvorby hlasu založené na biomechanice
Annotation in Czech
Na bázi MKP vyvinout komplexní, reálný počítačový model hlasivek člověka umožňující numerické simulace jejich kmitů v interakci s proudem vzduchu s výhledem na diagnostiku hlasových poruch, modelování patologických stavů a vývoj hlasivkových protéz.
Scientific branches
R&D category
ZV - Basic research
CEP classification - main branch
BI - Acoustics and oscillation
CEP - secondary branch
BK - Liquid mechanics
CEP - another secondary branch
FP - Other medical fields
10305 - Fluids and plasma physics (including surface physics)
10307 - Acoustics
30106 - Anatomy and morphology (plant science to be 1.6)
30107 - Medicinal chemistry
30108 - Toxicology
30109 - Pathology
30221 - Critical care medicine and Emergency medicine
30223 - Anaesthesiology
30224 - Radiology, nuclear medicine and medical imaging
30225 - Allergy
30226 - Rheumatology
30227 - Geriatrics and gerontology
30229 - Integrative and complementary medicine (alternative practice systems)
30230 - Other clinical medicine subjects
30307 - Nursing
30308 - Nutrition, Dietetics
30309 - Tropical medicine
30310 - Parasitology
30311 - Medical ethics
30312 - Substance abuse
30501 - Forensic science
30502 - Other medical science
Completed project evaluation
Provider evaluation
V - Vynikající výsledky projektu (s mezinárodním významem atd.)
Project results evaluation
Method of numerical simulation of viscous flow in interaction with self-oscillating vocal folds in airflow coming from the human lungs was developed. The results give the minimal subglottal pressure and airflow rate needed for the phonation onset.
Solution timeline
Realization period - beginning
Apr 1, 2009
Realization period - end
Dec 31, 2010
Project status
U - Finished project
Latest support payment
Mar 1, 2010
Data delivery to CEP
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data delivery code
CEP11-MSM-OC-U/01:1
Data delivery date
Jun 30, 2011
Finance
Total approved costs
846 thou. CZK
Public financial support
846 thou. CZK
Other public sources
0 thou. CZK
Non public and foreign sources
0 thou. CZK
Basic information
Recognised costs
846 CZK thou.
Public support
846 CZK thou.
100%
Provider
Ministry of Education, Youth and Sports
CEP
BI - Acoustics and oscillation
Solution period
01. 04. 2009 - 31. 12. 2010