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• W4308834912 abstract "Fundamental frequency patterns during phonation onset have received renewed interest due to their promising application in objective classification of normal and pathological voices. However, the associated underlying mechanisms producing the wide array of patterns observed in different phonetic contexts are not yet fully understood. Herein, we employ theoretical and numerical analyses in an effort to elucidate the potential mechanisms driving opposing frequency patterns for initial/isolated vowels versus vowels preceded by voiceless consonants. Utilizing deterministic lumped-mass oscillator models of the vocal folds, we systematically explore the roles of collision and muscle activation in the dynamics of phonation onset. We find that an increasing trend in fundamental frequency, as observed for initial/isolated vowels, arises naturally through a progressive increase in system stiffness as collision intensifies as onset progresses, without the need for time-varying vocal fold tension or changes in aerodynamic loading. In contrast, reduction in cricothyroid muscle activation during onset is required to generate the decrease in fundamental frequency observed for vowels preceded by voiceless consonants. For such phonetic contexts, our analysis shows that the magnitude of reduction in the cricothyroid muscle activation and the activation level of the thyroarytenoid muscle are potential factors underlying observed differences in (relative) fundamental frequency between speakers with healthy and hyperfunctional voices. This work highlights the roles of sometimes competing laryngeal factors in producing the complex array of observed fundamental frequency patterns during phonation onset." @default.
• W4308834912 created "2022-11-17" @default.
• W4308834912 creator A5079159378 @default.
• W4308834912 creator A5081475228 @default.
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• W4308834912 date "2022-11-12" @default.
• W4308834912 modified "2023-10-01" @default.
• W4308834912 title "Exploring the mechanics of fundamental frequency variation during phonation onset" @default.
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• W4308834912 doi "https://doi.org/10.1007/s10237-022-01652-8" @default.
• W4308834912 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/36370231" @default.
• W4308834912 hasPublicationYear "2022" @default.
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