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About

Vistiqa is a medtech company that uses Voice CFD as a modern way to design tiny changes inside the larynx that can improve voice quality.

Voice CFD (computational fluid dynamics of voice production) uses high-fidelity 3D numerical simulations to study how airflow through the larynx interacts with the vocal folds and generates sound. It visualizes laryngeal airflow, vocal-fold motion, and the resulting acoustics in detail.

Our goal is a fast, cost-effective and clinically validated pipeline: 1. larynx scan → 2. laryngeal simulation → 3. design proposal for a patient-specific vocal-fold implant.

Simulation workflow for modeling human phonation.

Simulations

We use high-fidelity 3D simulations to model how airflow, vocal-fold motion, and sound interact in the larynx and upper airways, and how these interactions determine voice quality.

Key topics

  • Vocal-fold oscillation (soft voice, breathy voice, etc.)
  • Glottal jet and laryngeal turbulence
  • Flow-induced sound

Core expertise

  • Large-eddy simulation (LES)
  • Computational aeroacoustics (CAA)
  • Fluid-structure-acoustic interaction (FSAI)
  • Surrogate modeling
  • Uncertainty quantification (UQ)
Laryngeal flow, vocal-fold oscillation f0=100 Hz.
Phonation of vowel /u/.
Turbulence model implementation
Turbulent flow
Human phonation – wave propagation
Acoustic spectra optimization / noise reduction.
Impact of material boundary conditions on acoustic spectra.
Visualization of phonation of vowel /a/
Vocal folds shape

Publications

We aim to publish our recent findings in the field of voice CFD for voice medicine applications (vistiqa.com/bib).

Preferred conferences

  • VFAS – Voice Foundation Annual Symposium
  • AQL – Advances in Quantitative Laryngology, Voice and Speech Research
  • MAVEBA – Models and Analysis of Vocal Emissions for Biomedical Applications
  • OFW – OpenFOAM Workshop

Preferred journals

  • JOV – Journal of Voice
  • JASA – Journal of the Acoustical Society of America
  • CAF – Computers & Fluids
  • OFJ – OpenFOAM Journal
OpenFOAM Workshop, OFW 2026 (Portugal)
OpenFOAM Workshop, OFW 2026 (Portugal)
Workshop on biomedical applications, MAVEBA 2021 (Italy)
29 Jun 2026, OFW
Guimarães (Portugal)

Impact of Vocal Fold Oscillation on Turbulent Flow in Human Phonation Modeling.
10 Feb 2023, JASA
AIP Publishing (USA)

Anisotropic minimum dissipation subgrid-scale model in hybrid aeroacoustic simulations of human phonation.
02 Jan 2023, Preprint
Cornell University (USA)

AMD subgrid-scale model in hybrid aeroacoustic simulations of human phonation.
29 Sep 2022, SKFM
Liberec (Czechia)

CFD-CAA simulations of the human phonation.
14-16 Dec 2021, MAVEBA
Firenze (Italy)

Large-Eddy Simulation of Human Phonation using the Anisotropic Minimum-Dissipation Model.
23 Feb 2021, AppSci
MDPI Publisher (Switzerland)

Impact of the Sub-Grid Scale Turbulence Model in Aeroacoustic Simulation of Human Voice.
19-21 Feb 2020, TPFM
Prague (Czechia)

Aeroacoustic Simulation of Human Phonation with the WALE Sub-Grid Scale Model.
02-04 Jun 2019, AQL
Montreal (Canada)

High-resolution CFD simulation of flow in glottis using LES.
20-22 Feb 2019, TPFM
Prague (Czechia)

Large-Eddy Simulation of Flow Through Human Larynx with a Turbulence Grid at Inlet.
21-24 Nov 2017, EFM
Mikulov (Czechia)

Large-Eddy Simulation of Internal Flow through Human Vocal Folds.

Contact

Vistiqa
Roonstrasse 23a
76137 Karlsruhe
Germany

Email: info@vistiqa.com

Phone: +49 170 735 6965

Website: https://vistiqa.com

Vistiqa

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