What question did this study set out to answer?

This research aims to determine whether the larynx and lower pharynx can produce independent sound frequencies through multiple sources.

Can lower vocal tract sound sources be multi-phonic?

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This research aims to determine whether the larynx and lower pharynx can produce independent sound frequencies through multiple sources.
Computer simulation used for flow-induced oscillation modeling in a simplified Navier-Stokes solution.
Focus on true vocal folds, ventricular folds, and aryepiglottic folds with varying adduction.
Analysis of biomechanical properties and acoustic advantages of different folds.
Simulations indicate potential for independent frequency contours among vocal sources, but not demonstrated in practice.
Strong interactions among sources lead to chaotic sound segments and distortion.
Proximity of sound sources affects their independence, complicating multi-phonic sound production.

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Randomized trial investigates potential for independent sound production in vocal tract, suggesting complex interactions limit success.

Ingo R. Titze (2025) studied this question.

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