Impedance tube solution for Helmholtz resonator prototyping
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Date
2025-01-21
Authors
Jun, David
Plášek, Josef
0000-0002-8601-3288Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
Springer
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Abstract
Transfer-function method impedance tube measurement is a well-known approach used for determining acoustical properties of mostly porous materials. This paper presents a prototype of impedance tube together with the software solution published under open-source licence. The prototype is developed specifically for experimental design of Helmholtz resonators. For room acoustic purposes, these are difficult to sufficiently characterize by other methods because of their highly frequency dependent complex-valued pressure reflection factor resulting in large phase shifts happening upon reflection. The main benefits of the presented method are the movable rigid termination operated by a stepper motor and the use of open-source libraries as well as widely available hardware for the whole measurement.
Description
Citation
Acoustics Australia. 2025, vol. 53, issue 1, p. 1-7.
https://link.springer.com/article/10.1007/s40857-024-00342-y
https://link.springer.com/article/10.1007/s40857-024-00342-y
Document type
Peer-reviewed
Document version
Published version
Date of access to the full text
Language of document
en