Aeroacoustic source characterization in a physical model of phonation

Michael Jesse McPhail, Elizabeth T. Campo, Michael H. Krane

Research output: Contribution to journalArticle

Abstract

This paper presents measurements conducted in a physical model of the adult human airway. The goals of this work are to (1) benchmark the physical model to excised larynx models in the literature and (2) empirically demonstrate the relationship between vocal fold drag and sound production. Results from the airway model are first benchmarked to published time-averaged behavior of excised larynx models. The airway model in this work exhibited higher glottal volume flow, lower glottal resistance, and less fundamental frequency variation than excised larynx models. Next, concurrent measurements of source behavior and radiated sound were compared. Unsteady transglottal pressure (a surrogate measure for vocal fold drag) and radiated sound, measured at the mouth, showed good correlation. In particular, the standard deviation and the ratio of the power of the first and second harmonics of the transglottal and mouth pressures were strongly correlated. This empirical result supports the assertion that vocal fold drag is the principal source of sound in phonation.

Original languageEnglish (US)
Pages (from-to)1210-1218
Number of pages9
JournalJournal of the Acoustical Society of America
Volume146
Issue number2
DOIs
StatePublished - Aug 1 2019

Fingerprint

aeroacoustics
larynx
drag
acoustics
mouth
low resistance
Phonation
Physical
standard deviation
harmonics
Sound

All Science Journal Classification (ASJC) codes

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

Cite this

McPhail, Michael Jesse ; Campo, Elizabeth T. ; Krane, Michael H. / Aeroacoustic source characterization in a physical model of phonation. In: Journal of the Acoustical Society of America. 2019 ; Vol. 146, No. 2. pp. 1210-1218.
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Aeroacoustic source characterization in a physical model of phonation. / McPhail, Michael Jesse; Campo, Elizabeth T.; Krane, Michael H.

In: Journal of the Acoustical Society of America, Vol. 146, No. 2, 01.08.2019, p. 1210-1218.

Research output: Contribution to journalArticle

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