<div class="csl-bib-body">
<div class="csl-entry">Huber, F., Gebrekidan, S. B., Lösch, M., & Toth, F. (2025). Using Burst Excitation to obtain Acoustic Material Properties in Impedance Tubes. In T. Dau & B. Epp (Eds.), <i>Proceedings of DAS/DAGA 2025</i> (pp. 61–64). Deutsche Gesellschaft für Akustik e.V. (DEGA). https://doi.org/10.71568/dasdaga2025.048</div>
</div>
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dc.identifier.uri
http://hdl.handle.net/20.500.12708/215854
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dc.description.abstract
Impedance tubes are a common tool used to characterize the reflection, absorption, and transmission properties of acoustic materials and structures. In this paper, we demonstrate the capability of the open-source finite element software openCFS to determine the acoustic properties of structures with gradient geometry, by using burst excitation signals in a time domain simulation setup. By decomposing the waves via a time domain approach, we obtain consistent results with the standard two and four-microphone impedance tube analyses. An in-house developed impedance tube is used to conduct experiments to verify the numerical results, deploying a feedforward control system to reproduce burst signals from a cone speaker accurately. In addition, we discuss the effects of numerical and experimental parameters on the accuracy of the results. The method offers a simplified setup to measure the acoustic properties of materials and opens up a new perspective to study materials exposed to burst excitation signals.
en
dc.language.iso
en
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dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
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dc.subject
Impedance Tube
en
dc.subject
Burst
en
dc.subject
Impulse
en
dc.subject
Acoustic Material Properties
en
dc.subject
Acoustic Material Characterization
en
dc.title
Using Burst Excitation to obtain Acoustic Material Properties in Impedance Tubes
en
dc.type
Inproceedings
en
dc.type
Konferenzbeitrag
de
dc.rights.license
Creative Commons Namensnennung 4.0 International
de
dc.rights.license
Creative Commons Attribution 4.0 International
en
dc.contributor.editoraffiliation
Technical University of Denmark, Denmark
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dc.contributor.editoraffiliation
Technical University of Denmark, Denmark
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dc.relation.isbn
978-3-939296-23-2
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dc.description.startpage
61
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dc.description.endpage
64
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dc.type.category
Full-Paper Contribution
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tuw.booktitle
Proceedings of DAS/DAGA 2025
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tuw.relation.publisher
Deutsche Gesellschaft für Akustik e.V. (DEGA)
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tuw.relation.publisherplace
Berlin, Germany
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tuw.researchTopic.id
M2
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tuw.researchTopic.id
C6
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tuw.researchTopic.id
I8
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tuw.researchTopic.name
Materials Characterization
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tuw.researchTopic.name
Modeling and Simulation
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tuw.researchTopic.name
Sensor Systems
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tuw.researchTopic.value
40
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tuw.researchTopic.value
30
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tuw.researchTopic.value
30
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tuw.publication.orgunit
E325-03 - Forschungsbereich Messtechnik und Aktorik