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Related Experiment Videos

Verifying a vocal tract model with a closed side-branch.

M T Jackson1, C Espy-Wilson, S E Boyce

  • 1Department of Electrical and Computer Engineering, Boston University, Massachusetts 02215, USA. ladmttj@ix.netcom.com

The Journal of the Acoustical Society of America
|June 27, 2001
PubMed
Summary

This study presents a validated vocal tract model using transmission line principles to compute acoustic frequencies. The model accurately predicts vocal tract behavior, including side-branch effects like the sublingual cavity.

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Area of Science:

  • Acoustics
  • Speech Science
  • Computational Modeling

Background:

  • Accurate vocal tract modeling is crucial for speech synthesis and analysis.
  • Existing models may not fully capture the acoustic effects of complex vocal tract geometries, such as side cavities.

Purpose of the Study:

  • To implement and validate a transmission line-based vocal tract model.
  • To assess the model's ability to calculate pole and zero frequencies for vocal tracts with side branches, specifically the sublingual cavity.

Main Methods:

  • Utilized a transmission line model to simulate vocal tract acoustics.
  • Calculated pole and zero frequencies based on the implemented model.
  • Validated the model by comparing computed frequencies with those derived from elementary acoustic formulas for various vocal tract shapes.

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Main Results:

  • The implemented vocal tract model successfully calculated pole and zero frequencies.
  • Model-derived frequencies showed good agreement with those estimated by traditional acoustic formulas.
  • The model demonstrated capability in handling vocal tract configurations with closed side branches.

Conclusions:

  • The transmission line model provides a viable method for predicting vocal tract acoustic properties.
  • The validated model can be used for analyzing speech production, particularly in cases involving sublingual cavities or similar anatomical structures.