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Updated: Jan 3, 2026
10:16
Synthetic, Multi-Layer, Self-Oscillating Vocal Fold Model Fabrication
Published on: December 2, 2011
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Quantifying the auto-oscillation complexity following water spraying with interest for phonation
A Van Hirtum1, A Bouvet1, X Pelorson1
1LEGI, UMR CNRS 5519, Grenoble Alpes University, Grenoble, France.
Physical Review. E
|November 28, 2019
Summary
Water spraying on vocal fold models affects sound production. Hydration can shift vocal fold oscillations from deterministic to chaotic, depending on initial conditions.
Area of Science:
- Fluid dynamics
- Bioacoustics
- Biomechanics
Background:
- Human phonation arises from laryngeal fluid-structure instability causing vocal fold auto-oscillation.
- Understanding factors influencing vocal fold dynamics is crucial for voice production research.
Purpose of the Study:
- To experimentally investigate the impact of surface hydration on vocal fold auto-oscillation.
- To quantify the effects of varying water volumes on oscillation patterns.
Main Methods:
- Utilized mechanical deformable vocal fold replicas to simulate phonation.
- Employed phase space recurrence and complexity analysis to quantify oscillation complexity from upstream pressure.
- Measured the ratio of determinism to recurrence rate (gamma) and correlation dimension (D2).
Main Results:
- Hydration significantly alters vocal fold oscillation patterns.
- The parameters gamma and D2 effectively capture the influence of hydration.
- Oscillation regimes can shift from deterministic to chaotic based on initial conditions.
Conclusions:
- Surface hydration is a key factor modulating vocal fold auto-oscillation.
- Initial conditions like elasticity and glottal aperture influence the response to hydration.
- This study provides quantitative insights into the fluid dynamics of phonation.
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