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Related Concept Videos

Larynx01:21

Larynx

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The human larynx, often referred to as the voice box, is an intricate organ located in the neck. It serves as a pathway for air to enter the lungs during respiration and is an essential component of voice production.
Anatomy of the Larynx
The larynx consists of various components, including cartilage, muscles, and vocal cords. Its structure includes three large unpaired cartilages—the thyroid, cricoid, and epiglottis—and three smaller paired cartilages—the arytenoids,...
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3D-Printed Synthetic Vocal Fold Models.

Ryan G T Romero1, Mark B Colton1, Scott L Thomson1

  • 1Department of Mechanical Engineering, Brigham Young University, Provo, Utah.

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|April 22, 2020
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Summary
This summary is machine-generated.

Researchers developed a 3D printing method for synthetic vocal fold (VF) models, reducing fabrication time and enabling future life-like designs. These 3D printed VF models demonstrate self-oscillation and comparable frequencies to human VFs.

Keywords:
3D PrintingPhonation modelingSynthetic vocal fold modelsVocal fold modelingVoice production

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Area of Science:

  • Biomedical Engineering
  • Acoustics
  • Materials Science

Background:

  • Traditional synthetic vocal fold (VF) models are silicone-based and cast, limiting fabrication speed and design complexity.
  • Studying voice production physics requires accurate and adaptable VF models.

Purpose of the Study:

  • To develop and demonstrate a novel 3D printing technique for synthetic VF models.
  • To reduce VF model fabrication time and increase production yield.
  • To establish a foundation for creating future VF models with enhanced geometric, material, and vibratory properties.

Main Methods:

  • A 3D printing method involving embedding UV-curable liquid silicone in a gel medium was utilized.
  • Printed silicone cubes underwent tensile testing to determine material properties.
  • Self-oscillating VF models were 3D printed, coated with silicone epithelium, and tested for phonation characteristics (onset pressure, frequency, amplitude).

Main Results:

  • Printed silicone cubes exhibited anisotropic material properties.
  • The 3D printed VF models achieved self-oscillation and sustained phonation.
  • Model vibration frequency and onset pressure were influenced by print parameters, with onset pressures higher than human VFs but frequencies within a comparable range.

Conclusions:

  • The study successfully demonstrated the feasibility of 3D printing synthetic, self-oscillating VF models.
  • This 3D printing approach is expected to be refined for future investigations into phonation dynamics.
  • The method offers potential for creating more sophisticated VF models for voice production research.