A micro-computed tomography-based physical model of macaque larynx reveals effect of vocal membrane on phonation onset pressure

The vocal membrane, i.e., an extended part of the vocal fold, is present in non-human primates. To understand its function in animal vocalization, Mergell et al. (1999) constructed a mathematical model of the vocal membrane and predicted that the vocal membrane lowers the phonation threshold pressur...

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Bibliographic Details
Published inAcoustical Science and Technology Vol. 46; no. 4; pp. 357 - 360
Main Authors Yamamoto, Yasuaki, Yoshitani, Tomoki, Fujie, Manato, Sugie, Koki, Nishimura, Takeshi, Tokuda, Isao T.
Format Journal Article
LanguageEnglish
Published ACOUSTICAL SOCIETY OF JAPAN 01.07.2025
Subjects
Animal vocalization
Phonation onset pressure
Vocal efficiency
Vocal fold oscillation
Vocal membrane
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ISSN1346-3969
1347-5177
DOI10.1250/ast.e24.123

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Summary:The vocal membrane, i.e., an extended part of the vocal fold, is present in non-human primates. To understand its function in animal vocalization, Mergell et al. (1999) constructed a mathematical model of the vocal membrane and predicted that the vocal membrane lowers the phonation threshold pressure required to initiate the vocal fold oscillations. The present study constructed a physical model of the vocal membrane based on a micro-computed tomography measurement of a rhesus macaque larynx. Our physical experiment confirmed that the phonation threshold pressure was indeed lowered and, consequently, the vocal efficiency was increased by the vocal membrane.
ISSN:1346-3969
1347-5177
DOI:10.1250/ast.e24.123