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Related Experiment Videos

Modeling measured glottal volume velocity waveforms.

Andrew Verneuil1, David A Berry, Jody Kreiman

  • 1Division of Head and Neck Surgery, University of California, Los Angeles School of Medicine, Los Angeles, California 90024-1624, USA.

The Annals of Otology, Rhinology, and Laryngology
|February 25, 2003
PubMed
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Researchers directly measured the glottal volume velocity waveform, the source of voice production, for the first time using canine models. This breakthrough in phonation research offers potential for future clinical applications.

Area of Science:

  • Speech Production
  • Bioacoustics
  • Laryngeal Physiology

Background:

  • The source-filter theory explains speech production via a glottal source and vocal tract filter.
  • Direct measurement of the glottal volume velocity waveform has been a long-standing challenge.

Purpose of the Study:

  • To directly measure the glottal volume velocity waveform in vivo.
  • To validate laryngeal airflow models using direct measurements.

Main Methods:

  • Utilized constant temperature anemometer probes and an endoscopic camera in a canine phonation model.
  • Simultaneously recorded airflow velocity and glottal area.
  • Combined airflow and area data to calculate volume velocity waveforms.

Main Results:

Related Experiment Videos

  • Successfully obtained direct measurements of glottal volume velocity waveforms.
  • Identified significant contributions from the anterior and middle glottis to the waveform.
  • Demonstrated that measured waveforms align with established laryngeal airflow models.

Conclusions:

  • Direct measurement of the glottal volume velocity waveform is feasible.
  • This technique provides valuable data for understanding phonation.
  • Noninvasive measurement holds promise for future clinical use in voice assessment.