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Dynamic System Coupling in Voice Production.

Christian T Herbst1, Coen P H Elemans2, Isao T Tokuda3

  • 1Department of Vocal Studies, Mozarteum University, Salzburg, Austria; Janette Ogg Voice Research Center, Shenandoah Conservatory, Winchester, Virginia. Electronic address: http://www.christian-herbst.org.

Journal of Voice : Official Journal of the Voice Foundation
|February 3, 2023
PubMed
Summary
This summary is machine-generated.

The MyoElastic-AeroDynamic (MEAD) theory and the Source-Filter Theory (SFT) are integral to understanding voice production. Integrating these theories offers a holistic, systems-level view of vocal communication in humans and animals.

Keywords:
MEADMyoelastic-aerodynamic theoryPhonationSource-filter couplingSource-filter interactionsSource-filter theoryVoice

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Area of Science:

  • Bioacoustics
  • Biophysics
  • Speech Science

Background:

  • Voice production is crucial for communication across many vertebrate species.
  • Existing theories, MyoElastic-AeroDynamic (MEAD) and Source-Filter Theory (SFT), offer distinct perspectives on voice production.
  • MEAD focuses on vocal fold dynamics, while SFT addresses acoustic filtering through the vocal tract.

Purpose of the Study:

  • To review and integrate the MEAD and SFT for a holistic understanding of voice production.
  • To explore the nonlinear extension of SFT and its parallels with musical instrument acoustics.
  • To discuss the application of these integrated theories to human and animal vocalization.

Main Methods:

  • Comprehensive literature review of MEAD and SFT.
  • Analysis of nonlinear dynamics in voice production.
  • Comparative study of vocalization across species.

Main Results:

  • MEAD and SFT are complementary, not mutually exclusive, aspects of voice production.
  • A nonlinear extension of SFT reveals similarities to sound production in brass instruments.
  • A systems-level perspective, viewing voice production as a dynamically coupled system, is supported by nonlinear dynamics.

Conclusions:

  • A unified theory integrating MEAD and SFT provides a more complete model of voice production.
  • Nonlinear dynamics offer valuable insights into the complex mechanisms of vocalization.
  • Viewing voice production as a coupled system enhances our understanding of both human and animal communication.