Florina Anca STREMTAN, Iulian LUPEA


Micro-perforated panels (MPP) present an increasing use in terms of acoustic energy absorption capacity, efficient design and simulation. A double micro-perforated absorber (DMPA) is formed by two micro-perforated panels placed in parallel backed by a rigid wall, and it is based on the principle of Helmholtz resonator which presents a small opening connected to a closed volume of air. The air space can be filled partially or completely with different sound-absorbing materials. The analytical models used to calculate sound absorption coefficient are based on the electrical equivalent circuit of the structure and the transfer matrix method. The compatibility of these two methods is observed and analyzed in order to improve them. Both methods imply the models predicted by Maa for the acoustical resistance and reactance of the MPPs.

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Allard J., Atalla, N., Propagation of Sound in Porous Media: Modelling Sound Absorbing Materials, John Wiley & Sons, ISBN-13: 978-0470746615, 2009.

Asdrubali, F., Pispola, G., Properties of transparent sound-absorbing panels for use in noise barriers, Acoustical Society of America, pp. 214–221, 2007.

Cobo, P., Cuesta, M, Siguero, M., Comparison of models describing double layer microperforated absorbers, Noise Control Eng. J. 57 (1), pp.10-15, Jan-Feb 2009.

Ingard, U, Noise Reduction Analysis, Jones and Bartlett Publishers, ISBN: 978-1-934015-31-5, Toronto, 2010.

Jung, S., S., Kim, Y., T, Lee, D., H., Kim, H., C., Cho, S., I., Lee, J., K., Sound Absorption of Micro-Perforated Panel, Journal of the Korean Physical Society , Vol. 50, No. 4, pp. 1044-1051., 2007.

Maa, D.-Y., Potential of microperforated panel absorber, J. Acoust. Soc. Am., vol. 104, 1998.

Sakagami K., Nakamori, T., Morimoto, M., Yairi, M., Double-leaf microperforated panel space absorbers: A revised theory, Applied Acoustics, Vol. 70, 2009, pp. 703–709.

Sakagami K., Matsutani, K., Morimoto, M., Sound absorption of a double-leaf micro-perforated panel with an air-back, Applied Acoustics, Vol. 71, pp.411-417, 2010.

Stremţan, Florina-Anca, Garai, M., Lupea, I., Micro-perforated panels and sound absorption, Acta Technica Napocensis, Series: Applied Mathematics and Mechanics, Issue. III, Vol.55, pp. 549-554, 2012.

Stremţan, Florina-Anca, Lupea, I., Assessing the sound absorption of micro-perforated panels by using the transfer function and the impedance tube, RJAV vol IX, ISSN 1584-7284, pp. 95-100, 2012.

Tao Z., Herrin, D., Seybert, A., Measuring Bulk Properties of Sound-Absorbing Materials Using the Two-Source Method, Technical Paper, 2003.

Toyoda, M., Takahashi, D., Sound transmission through a microperforated-panel structure with subdivided air cavities, J. Acoust. Soc. Am. 124, pp. 3594-3603, 2008.

Zou, J., Shen, Y., Yang, J., Qiu, X., A note on the prediction method of reverberation absorption coefficient of double layer micro-perforated membrane, Applied Acoustics, pp. 106–11167, 2006.


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