2012 Fiscal Year Final Research Report
Elucidation of human phonation mechanisms based on airflow in a larynx induced by vocal fold vibration
| Project/Area Number |
22560224
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Dynamics/Control
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| Research Institution | Tottori University |
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Principal Investigator |
ARII Shiro 鳥取大学, 大学院・工学研究科, 准教授 (80222751)
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| Co-Investigator(Kenkyū-buntansha) |
KATAOKA Hideyuki 鳥取大学, 医学部付属病院, 講師 (00224436)
HASEGAWA Kensaku 鳥取大学, 医学部, 講師 (60252847)
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| Co-Investigator(Renkei-kenkyūsha) |
KITANO Hiroya 鳥取大学, 医学部, 教授 (20153108)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 機械力学・制御 / 振動学 / 生体工学 |
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| Research Abstract |
Acoustics of human vowel sounds are usually described by using the source-filter theory. In this theory, a laryngeal sound is treated as a planar sound source, and characteristics of airflow from lungs is not considered at all. In the present study, the airflow in a larynx was experimentally analyzed to clarify phonation mechanisms and seek better modeling of a laryngeal sound source. Experimental results show clearly that periodic change and high frequency fluctuation in the airflow velocity provides crucial information to create better simulation models of the phonation mechanism.
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