Numerical computation of the human voice source

• Applicant: Professor Dr.-Ing. Michael Döllinger
• Subject Area: Acoustics
• Term: from 2018 to 2022
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 391215328

• Final Report Year: 2022

Final Report Abstract

The following scientific progress and impact towards the development of the hybrid aeroacoustic larynx model simVoice can be reported: (1) a CFD model with prescribed vocal fold motion was developed and successfully validated against experimental data, (2) a data transfer workaround between the CFD and the CAA part was established, (3) a CAA model was developed that is able to produce typical characteristics of experimental acoustic signals, (4) the computing time of the CFD part could be reduced, and (5) simVoice is able to mimic typical characteristics of symptoms of functional voice disorders. In the rejected renewal of the grant, we would have continued the promising, so far performed investigations: (1) numeric noise in the CFD part, (2) lack of vocal fold oscillation in the CAA part. The goal would have been to (1) further improve the established modeling and simulation processes of simVoice, and (2) implementing/mimicking the organic based voice disorder subtypes: paresis, polyps, carcinoma, and post-surgery defects as scars and synechia. Due to rejection, we cannot pursue these further steps and goals.

Publications

• “Computational Models of Laryngeal Aerodynamics: Potentials and Numerical Costs”. In: Journal of Voice 33.4 (2018), pp. 385–400
  H. Sadeghi, S. Kniesburges, M. Kaltenbacher, A. Schützenberger, and M. Döllinger
  
• “Aerodynamic impact of the ventricular folds in computational larynx models”. In: The Journal of the Acoustical Society of America 145.4 (2019), pp. 2376–2387
  H. Sadeghi, M. Döllinger, M. Kaltenbacher, and S. Kniesburges
  
• “Towards a clinically applicable computational larynx model”. In: Applied Sciences (Switzerland) 9.11 (2019), p. 2288
  H. Sadeghi, S. Kniesburges, S. Falk, M. Kaltenbacher, A. Schützenberger, and M. Döllinger
  
• “Aeroacoustic source term computation based on radial basis functions”. In: International Journal for Numerical Methods in Engineering 121.9 (2020), pp. 2051–2067
  S. Schoder, K. Roppert, M. Weitz, C. Junger, and M. Kaltenbacher
  
• “Application limits of conservative source interpolation methods using a low Mach number hybrid aeroacoustic workflow”. In: Journal of Theoretical and Computational Acoustics (Dec. 2020), S2591728520500322
  S. Schoder, A. Wurzinger, C. Junger, M. Weitz, C. Freidhager, K. Roppert, and M. Kaltenbacher
  
• “Hybrid aeroacoustic approach for the efficient numerical simulation of human phonation”. In: The Journal of the Acoustical Society of America 147.2 (2020), pp. 1179–1194
  S. Schoder, M. Weitz, P. Maurerlehner, A. Hauser, S. Falk, S. Kniesburges, M. Döllinger, and M. Kaltenbacher
  
• “Postprocessing of Direct Aeroacoustic Simulations Using Helmholtz Decomposition”. In: AIAA Journal (2020), pp. 3019–3027
  S. Schoder, K. Roppert, and M. Kaltenbacher
  
• “3D-FV-FE aeroacoustic larynx model for investigation of functional based voice disorders”. In: Frontiers in Physiology 12 (2021)
  S. Falk, S. Kniesburges, S. Schoder, B. Jakubaß, P. Mauererlehner, M. Echternach, M. Kaltenbacher, and M. Döllinger
  
• “Aeroacoustic source term analysis of human voice production - Perturbed convective wave equation”. In: Applied Sciences 11 (2021), p. 2614
  S. Schoder, P. Maurerlehner, A. Wurzinger, A. Hauser, S. Falk, S. Kniesburges, M. Döllinger, and M. Kaltenbacher