Frequency jumps in excised larynges in anechoic conditions: A pilot study
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F23%3A73618865" target="_blank" >RIV/61989592:15310/23:73618865 - isvavai.cz</a>
Alternative codes found
RIV/61989592:15110/23:73618865 RIV/00098892:_____/23:10157993
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0022460X23000561" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0022460X23000561</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.jsv.2023.117607" target="_blank" >10.1016/j.jsv.2023.117607</a>
Alternative languages
Result language
angličtina
Original language name
Frequency jumps in excised larynges in anechoic conditions: A pilot study
Original language description
Sudden fundamental frequency jumps between chest and falsetto registers are among the least understood phenomena occurring in human voice. Such jumps are recognized as bifurcation events and have been assumed to result from nonlinear-dynamic properties of the vocal folds interacting with acoustic resonances of the vocal tract and of the subglottal tract (ST). Here, we explored an anechoic (resonance-free) ST and investigated these frequency jumps in five excised human larynges under two conditions: (a) anechoic and (b) subglottally resonant without a vocal tract. When smoothly elongating the vocal folds, we observed consistent jumps in anechoic conditions, proving that subglottal and vocal tract resonances are not necessary for the jumps to arise. The presence of a resonant ST did not result in more numerous jumps compared to anechoic conditions, indicating that the inherent nonlinear-dynamic properties of the larynges were the primary cause for the jumps. Nevertheless, the resonant ST slightly altered the initial and terminating frequencies of the jumps suggesting that the role of interaction of the vocal fold oscillations with subglottal acoustics should not be neglected. These experimental findings should be considered when validating mathematical models simulating the nonlinear-dynamic behavior of the human vocal apparatus.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10307 - Acoustics
Result continuities
Project
<a href="/en/project/GA19-04477S" target="_blank" >GA19-04477S: Modelling and measurements of fluid-structure-acoustic interactions in biomechanics of human voice production</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
JOURNAL OF SOUND AND VIBRATION
ISSN
0022-460X
e-ISSN
1095-8568
Volume of the periodical
551
Issue of the periodical within the volume
MAY
Country of publishing house
US - UNITED STATES
Number of pages
8
Pages from-to
"117607-1"-"117607-8"
UT code for WoS article
000948584500001
EID of the result in the Scopus database
2-s2.0-85148539849