Journal
JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA
Volume 147, Issue 4, Pages 2597-2608Publisher
ACOUSTICAL SOC AMER AMER INST PHYSICS
DOI: 10.1121/10.0001093
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Funding
- National Science Foundation [245, 1652632]
- Directorate For Engineering
- Div Of Chem, Bioeng, Env, & Transp Sys [1652632] Funding Source: National Science Foundation
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In this work, a high-fidelity three-dimensional continuum model of the canine laryngeal framework was developed for simulating laryngeal posturing. By building each muscle and cartilage from magnetic resonance imaging (MRI), the model is highly realistic in anatomy. The muscle mechanics is modeled using the finite-element method. The model was tested by simulating vocal fold postures under systematic activations of individual as well as groups of laryngeal muscles, and it accurately predicted vocal fold posturing parameters reported from in vivo canine larynges. As a demonstration of its application, the model was then used to investigate muscle controls of arytenoid movements, medial surface morphology, and vocal fold abduction. The results show that the traditionally categorized adductor and abductor muscles can have opposite effects on vocal fold posturing, making highly complex laryngeal adjustments in speech and singing possible. These results demonstrate that a realistic comprehensive larynx model is feasible, which is a critical step toward a causal physics-based model of voice production.
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