In vivo insights into irregular voice production as a complex nonlinear system—a case study

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Case study reveals distinct voice qualities and nonlinear phenomena in a professional singer, highlighting complex oscillations.

Distinct voice qualities exhibit oscillatory mechanisms differing in glottal and supraglottic oscillations, and compression.
In vivo data analysis shows nonlinear phenomena such as bifurcations and chaotic oscillations in voice production.
Transnasal high-speed imaging reveals key aspects of phonation types related to irregularity in vocal production.
Reduced glottal adduction amplification and diverse structures contribute to irregularity in vocalization during performance.

Traser et al. (2025) studied this question.

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