The physics of small-amplitude oscillation of the vocal folds.

@article{Titze1988ThePO,
  title={The physics of small-amplitude oscillation of the vocal folds.},
  author={Ingo R. Titze},
  journal={The Journal of the Acoustical Society of America},
  year={1988},
  volume={83 4},
  pages={
          1536-52
        }
}
  • I. Titze
  • Published 1988
  • Physics, Medicine
  • The Journal of the Acoustical Society of America
A theory of vocal fold oscillation is developed on the basis of the body-cover hypothesis. The cover is represented by a distributed surface layer that can propagate a mucosal surface wave. Linearization of the surface-wave displacement and velocity, and further small-amplitude approximations, yields closed-form expressions for conditions of oscillation. The theory predicts that the lung pressure required to sustain oscillation, i.e., the oscillation threshold pressure, is reduced by reducing… Expand
Dependence of phonation threshold pressure on vocal tract acoustics and vocal fold tissue mechanics.
  • R. Chan, I. Titze
  • Physics, Medicine
  • The Journal of the Acoustical Society of America
  • 2006
TLDR
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This paper analyzes the interaction between the vocal folds and vocal tract at phonation onset due to the acoustical coupling between both systems and shows that the frequency jumps are produced by saddle-node bifurcations between limit cycles forming a classical pattern of a cusp catastrophe. Expand
Theoretical consideration of the flow behavior in oscillating vocal fold.
TLDR
The result shows that the unsteady effect due to convective acceleration of vocal fold wall-induced flow becomes comparable in magnitude to the Bernoulli effect at a high but physiological frequency of phonation. Expand
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TLDR
A numerical solution of the time-dependent equations of the surface wave model shows that adding a supraglottal vocal tract lowers the phonation threshold pressure by an amount approximately consistent with Chan and Titze's experiments. Expand
A One-Mass Physical Model of the Vocal Folds with Seesaw-Like Oscillations
A low-dimensional physical model of small-amplitude oscillations of the vocal folds is proposed here. The model is a simplified version of the body-cover one in which mucosal surface waveExpand
Dynamics of the Vocal Fold Oscillation 1
This paper presents an analysis of the dynamics of the vocal fold oscil- lation at phonation, using low dimensional mathematical models. It shows that the wavelike motion of the vocal fold mucosa isExpand
A lumped mucosal wave model of the vocal folds revisited: recent extensions and oscillation hysteresis.
TLDR
An updated version of a lumped mucosal wave model of the vocal fold oscillation during phonation is examined, finding that an oscillation hysteresis phenomenon may occur, with different values for the oscillation onset and offset threshold. Expand
Acoustic interactions of the voice source with the lower vocal tract.
  • I. Titze, B. Story
  • Physics, Medicine
  • The Journal of the Acoustical Society of America
  • 1997
TLDR
Effects of the piriform sinuses, pharynx expansion, and nasal coupling are discussed, and the inertance of the vocal tract facilitates vocal fold vibration by lowering the oscillation threshold pressure. Expand
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References

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The myoelastic-aerodynamic theory of phonation has been quantified and tested with mathematical models. The models suggest that vocal fold oscillation is produced as a result of asymmetric forcingExpand
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  • Physics, Medicine
  • The Journal of the Acoustical Society of America
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TLDR
The usual mass‐spring models are shown to be inadequate in certain important cases, especially during vocal‐fold closure and for modes in which vertical phase differences occur. Expand
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Publisher Summary This chapter discusses new theories of vocal fold vibration. Understanding the physical mechanism of vocal fold vibration is important both for the way in which the voice is thoughtExpand
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A model of voiced-sound generation is derived in which the detailed acoustic behavior of the human vocal cords and the vocal tract is computed. The vocal cords are approximated by a self-oscillatingExpand
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A new equivalent circuit including a transverse impedance to represent wall motion is postulated for the vocal cords based on the tube analogy, and self-oscillation conditions for the cords should be the same. Expand
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An Interactive Model for the Voice Source
A parametric model for the voice source is described which includes the acoustic interaction between the glottal source and the subglottal and supraglottal acoustic systems. The acoustic theory ofExpand
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A model of the larynx has been constructed, and measurements of air resistance for this model have been made. The dc resistance R was measured for diameter d of the glottis from 0.1 to 3.2 mm, forExpand
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  • The Journal of the Acoustical Society of America
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The human vocal cord is treated as an elastic material capable of propagating compressional, shear, and surface waves. A mathematical formulation for commonly observed vibrational modes is developed.Expand
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