Acta Mechanica Slovaca 2011, 15(2):28-32 | DOI: 10.21496/ams.2011.015

Porous Sound Absorbers and Determination of their Acoustical Properties

Lumnitzer Ervin, Badida Miroslav, Bilová Monika*
Department of Environmental, Faculty of Mechanical Engineering, P. Komenského 5, 042 00 Košice, Slovak Republic

One of the most frequent problems faced by noise control engineers is how to design sound absorbers that provide the desirable sound absorption coefficient that minimizes the size and cost, does not introduce any environmental hazards, and stands up to hostile environments. The designers of sound absorbers must know how to choose the proper sound absorbing materials, its geometry and the protective facing. Porous sound-absorbing materials are utilized in almost all areas of noise control engineering. This paper deals with the acoustical parameters of porous materials and their measurement.

Keywords: Porosity, Flow Resistivity, Tortuosity, Measurement

Received: March 28, 2011; Accepted: May 24, 2011; Published: October 31, 2011  Show citation

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Ervin, L., Miroslav, B., & Monika, B. (2011). Porous Sound Absorbers and Determination of their Acoustical Properties. Acta Mechanica Slovaca, 15(2), 28-32. doi: 10.21496/ams.2011.015
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