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Prediction of Sound-Absorbing Performance of Micro-Perforated Panels Using the Transfer Matrix Method
Technical Paper
2005-01-2282
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
Micro-perforated panels have tiny pores which attenuate sound based on the Helmholtz resonance principle. That being the case, an appropriate cavity depth should be chosen to fully capitalize on the attenuation potential of the panel. Generally, the panel's sound absorbing performance can be predicted by Maa's theory given information about the panel and the cavity depth. However, in some cases, one cannot use the theory to predict the panel's performance precisely, especially when the micro-perforate has varying diameters and/or irregular hole shapes. In these cases, the sound-absorbing performance of the micro-perforate is different from that of a uniform pore diameter perforate. This paper presents an alternative method to predict the micro-perforated panel's performance precisely. As a first step, the transfer impedance of the micro-perforate should be measured. Then, the transfer matrix method is employed to predict the sound-absorbing performance of a single panel or system of panels. It is demonstrated that the suggested approach can predict the performance very accurately.
Authors
Citation
Tao, Z., Zhang, B., Herrin, D., and Seybert, A., "Prediction of Sound-Absorbing Performance of Micro-Perforated Panels Using the Transfer Matrix Method," SAE Technical Paper 2005-01-2282, 2005, https://doi.org/10.4271/2005-01-2282.Also In
References
- Maa Dah-You “Potential of Microperforated Panel Absorber,” J. Acoust. Soc. Am. 104 2861 2866 1998
- Beranek, L.L. Vér, I.L. Noise and Vibration Control Engineering John Wiley & Sons, Inc. 377 New York 1992
- Wu T. W. Cheng C. Y. R. Tao Z. “Boundary Element Analysis of Packed Silencers with Protective Cloth and Embedded Thin Surfaces,” Journal of Sound and Vibration 261 1 15 2003
- ASTM standard, E1050-98 “Standard Test Method for Impedance and Absorption of Acoustical Material Using a Tube, Two Microphones and a Digital Frequency Analysis System,” 1998