Aeroacoustic analysis of the human phonation process based on a hybrid acoustic PIV approach

Beitrag in einer Fachzeitschrift
(Originalarbeit)


Details zur Publikation

Autorinnen und Autoren: Lodermeyer A, Tautz M, Becker S, Döllinger M, Birk V, Kniesburges S
Zeitschrift: Experiments in Fluids
Jahr der Veröffentlichung: 2018
Band: 59
Heftnummer: 13
ISSN: 0723-4864
Sprache: Englisch


Abstract


The detailed analysis of sound generation in human phonation is severely limited as the accessibility to the laryngeal flow region is highly restricted. Consequently, the physical basis of the underlying fluid–structure–acoustic interaction that describes the primary mechanism of sound production is not yet fully understood. Therefore, we propose the implementation of a hybrid acoustic PIV procedure to evaluate aeroacoustic sound generation during voice production within a synthetic larynx model. Focusing on the flow field downstream of synthetic, aerodynamically driven vocal folds, we calculated acoustic source terms based on the velocity fields obtained by time-resolved high-speed PIV applied to the mid-coronal plane. The radiation of these sources into the acoustic far field was numerically simulated and the resulting acoustic pressure was finally compared with experimental microphone measurements. We identified the tonal sound to be generated downstream in a small region close to the vocal folds. The simulation of the sound propagation underestimated the tonal components, whereas the broadband sound was well reproduced. Our results demonstrate the feasibility to locate aeroacoustic sound sources inside a synthetic larynx using a hybrid acoustic PIV approach. Although the technique employs a 2D-limited flow field, it accurately reproduces the basic characteristics of the aeroacoustic field in our larynx model. In future studies, not only the aeroacoustic mechanisms of normal phonation will be assessable, but also the sound generation of voice disorders can be investigated more profoundly.



FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Becker, Stefan apl. Prof. Dr.
Lehrstuhl für Prozessmaschinen und Anlagentechnik
Birk, Veronika
Phoniatrische und Pädaudiologische Abteilung in der Hals-Nasen-Ohren-Klinik
Döllinger, Michael Prof. Dr.
Professur für Computational Medicine (DFG-Forschungsprofessur)
Kniesburges, Stefan PD Dr.-Ing.
Phoniatrische und Pädaudiologische Abteilung in der Hals-Nasen-Ohren-Klinik
Lodermeyer, Alexander
Lehrstuhl für Prozessmaschinen und Anlagentechnik
Tautz, Matthias
Lehrstuhl für Prozessmaschinen und Anlagentechnik


Zitierweisen

APA:
Lodermeyer, A., Tautz, M., Becker, S., Döllinger, M., Birk, V., & Kniesburges, S. (2018). Aeroacoustic analysis of the human phonation process based on a hybrid acoustic PIV approach. Experiments in Fluids, 59(13). https://dx.doi.org/10.1007/s00348-017-2469-9

MLA:
Lodermeyer, Alexander, et al. "Aeroacoustic analysis of the human phonation process based on a hybrid acoustic PIV approach." Experiments in Fluids 59.13 (2018).

BibTeX: 

Zuletzt aktualisiert 2019-01-01 um 17:10