Fluctuations in pressure wave within the larynx

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概要

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• A study was carried out to investigate the fluctuations within the larynx by numerical experiments. The study estimated three types of fluctuation measures in speech waves, that is the coefficient of variation (CV) of fundamental frequency, the CV of amplitude, and the harmonic-to-noise ratio (HNR), in order to quantitatively evaluate the fluctuations. The experiment restrict the vocal fold vibrations to the lateral direction x, to simplify the analysis. The fluctuation measures indicated higher fluctuations downstream of the glottis, although marked fluctuations are not observed for other locations. The result of the study suggests that the fluctuations in pressure waves within the larynx as a result of unsteady glottal flow is observed only in a limited area downstream of the glottis for nonpathological speech organs with symmetric physical parameters.全文公開200908

• 社団法人日本音響学会の論文

著者

• Nomura Hideyuki

  Division Of Electrical Engineering And Computer Science Kanazawa University:(present Office)the Univ

• Nomura Hideyuki

  Division Of Electrical Engineering And Computer Science Kanazawa University

• Funada Tetsuo

  Division Of Electrical Engineering And Computer Science Kanazawa University

関連論文

• Numerical simulation of unsteady flow through the rigid glottis
• Fluctuations in pressure wave within the larynx
• Effects of the false vocal folds on sound generation by an unsteady glottal jet through rigid wall model of the larynx
• Sound generation by unsteady flow ejecting from the vibrating glottis based on a distributed parameter model of the vocal cords

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