A morphological and acoustic analysis of the vocal tract during the act of whistling

Tokihiko Kaburagi, Takuma Shimizu, Yasufumi Uezu

研究成果: ジャーナルへの寄稿記事

抄録

The human whistle is a typical aeroacoustic sound. Downstream of a small orifice made by the lips, a jet is formed by airflow with a high Reynolds number. A sequence of vortex rings is then produced, and periodic air pressure changes result in a characteristic whistling sound. Although the vocal tract has been reported to act as an acoustic resonator determining the blowing pitch, the precise shape of the vocal tract and its resonance properties during whistling remain unclear. In the current study, the morphological and acoustic properties of the vocal tract were examined during the act of whistling in a single participant. The vocal tract was scanned in three dimensions using magnetic resonance imaging while four musical notes were produced. The data revealed that the tongue constricted the vocal tract in different ways depending on the note, and the location of the constriction moved forward when the blowing pitch increased. Acoustic analysis of the vocal tract showed that the second peak of the lip input impedance was largely in accord with the whistling pitch. In addition, specific regions in the vocal tract were highly acoustically sensitive to small deformations.

元の言語英語
ページ(範囲)198-206
ページ数9
ジャーナルAcoustical Science and Technology
39
発行部数3
DOI
出版物ステータス出版済み - 1 1 2018

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acoustics
blowing
aeroacoustics
vortex rings
tongue
acoustic properties
high Reynolds number
orifices
magnetic resonance
constrictions
resonators
impedance
air

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics

これを引用

A morphological and acoustic analysis of the vocal tract during the act of whistling. / Kaburagi, Tokihiko; Shimizu, Takuma; Uezu, Yasufumi.

:: Acoustical Science and Technology, 巻 39, 番号 3, 01.01.2018, p. 198-206.

研究成果: ジャーナルへの寄稿記事

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