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Related Experiment Video

Updated: Jun 13, 2026

Synthetic, Multi-Layer, Self-Oscillating Vocal Fold Model Fabrication

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Published on: December 2, 2011

ON THE SINGLE-MASS MODEL OF THE VOCAL FOLDS.

M S Howe¹, R S McGowan

¹Boston University, College of Engineering, 110 Cummington Street, Boston MA 02215.

Fluid Dynamics Research

|April 27, 2010

Summary

This summary is machine-generated.

This study reveals how fluid-structure interactions, specifically vortex shedding, drive vocal fold oscillations for voiced speech. This positive feedback mechanism explains self-sustained vocal fold vibration during breathing.

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Area of Science:

Acoustics
Fluid Dynamics
Biomechanics

Background:

Vocal fold oscillations are crucial for voiced speech production.
Understanding the fluid-structure interactions is key to explaining vocal fold dynamics.
Previous models have not fully captured the self-sustained oscillation mechanism.

Purpose of the Study:

To analyze the fluid-structure interactions supporting self-sustained vocal fold oscillations.
To propose an analytical model for vortex shedding in voiced speech.
To investigate the positive feedback mechanism driving vocal fold vibration.

Main Methods:

Re-examination of the Fant and Flanagan single-mass vocal fold model.
Analytical representation of vortex shedding during glottal flow.
Application of free-streamline theory to model flow separation.
Numerical prediction of radiated sound waveforms.

Main Results:

Vortex shedding during glottal contraction creates a low-pressure suction force.
This suction force provides positive feedback, sustaining vocal fold oscillations.
The model predicts the waveform of sound radiated from the glottis.

Conclusions:

Fluid-structure interactions, particularly vortex shedding, are essential for self-sustained vocal fold oscillations.
The proposed model explains the positive feedback mechanism driving voiced speech.
The theory can be extended to include acoustic wave feedback in the vocal tract and subglottal regions.