The minimum lung pressure to sustain vocal fold oscillation.

@article{Lucero1995TheML,
  title={The minimum lung pressure to sustain vocal fold oscillation.},
  author={Jorge C. Lucero},
  journal={The Journal of the Acoustical Society of America},
  year={1995},
  volume={98 2 Pt 1},
  pages={
          779-84
        }
}
  • J. Lucero
  • Published 1 August 1995
  • Physics
  • The Journal of the Acoustical Society of America
In previous experimental studies it has been observed that the minimum lung pressure to sustain vocal fold oscillation after its onset is lower than the threshold pressure needed to initiate it. This phenomenon is studied analytically using a previous body-cover model of the vocal folds and applying the describing function method to the general case of large amplitude oscillations. It is shown that the phenomenon is a consequence of the nonlinear characteristic of the effective aerodynamic… 

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References

SHOWING 1-5 OF 5 REFERENCES
The physics of small-amplitude oscillation of the vocal folds.
  • I. Titze
  • Physics
    The Journal of the Acoustical Society of America
  • 1988
TLDR
It is shown that vocal tract inertance reduces the oscillation threshold pressure, whereas vocal tract resistance increases it, and the treatment is harmonized with former treatments based on two-mass models and collapsible tubes.
Phonation threshold pressure: a missing link in glottal aerodynamics.
  • I. Titze
  • Physics
    The Journal of the Acoustical Society of America
  • 1992
TLDR
It is shown that singers obtain two to three times greater peak flow for a given lung pressure, suggesting that they adjust their glottal or vocal tract impedance for optimal flow transfer between the source and the resonantor.
Investigation of phonation using excised larynxes
TLDR
This paper presents a meta-modelling system that automates the very labor-intensive and therefore time-heavy and therefore expensive and expensive process of computer programming called “ CAD/CAM”.
Pronation threshold pressure
  • 1994