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Related Experiment Videos

Modeling the glottal volume-velocity waveform for three voice types

D G Childers1, C Ahn

  • 1Department of Electrical Engineering, University of Florida, Gainesville 32611-2024.

The Journal of the Acoustical Society of America
|January 1, 1995
PubMed
Summary
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This study modeled glottal waveforms for modal, vocal fry, and breathy voices using LF model parameters. Findings reveal distinct waveform features for each voice type, enabling synthesized speech generation.

Area of Science:

  • * Speech Science
  • * Acoustic Phonetics
  • * Voice Production

Background:

  • * Understanding the glottal volume-velocity waveform is crucial for characterizing voice production.
  • * Previous models often lack detailed parameterization for different voice types.

Purpose of the Study:

  • * To model glottal volume-velocity waveform features for modal, vocal fry, and breathy voices.
  • * To identify key LF model parameters differentiating these voice types.
  • * To develop a method for synthesizing these voice types using the glottal waveform model.

Main Methods:

  • * Glottal inverse filtering to estimate the glottal volume-velocity waveform.
  • * Fitting the estimated waveform to an LF (Liljencrants-Fant) model.
  • * Statistical analysis including ANOVA and linear regression on four LF model parameters.

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Main Results:

  • * Three of the four LF model parameters showed significant differences across the three voice types.
  • * Linear regression identified significant LF model parameters correlating with perceived voice quality.
  • * A synthesis rule was developed based on the LF glottal waveform model.

Conclusions:

  • * The LF model effectively captures distinct features of modal, vocal fry, and breathy voice waveforms.
  • * Specific LF model parameters are key acoustic correlates of voice type.
  • * The developed model and synthesis rule can accurately reproduce different voice qualities.