PT  - JOURNAL ARTICLE
AU  - Badida, Miroslav
AU  - Bartko, Ladislav
AU  - Lumnitzer, Ervin
AU  - Szabó, Róbert
TI  - Research of Selected Acoustic Descriptors of Two-Layer Sandwich Absorbers
DP  - 2011 Oct 31
TA  - Acta Mechanica Slovaca
PG  - 22--29
VI  - 15
IP  - 3
AID - 10.21496/ams.2011.024
IS  - 13352393
AB  - In spite of existing European and national legislation aimed at noise abatement, public interest and concern about noise are high. The EU Directive 70/157/EEC [13] for setting and controlling environmental noise is aimed at creating less noisy and more pleasant environment for European residents within "Sustainable Development in Europe". The authors are presenting a methodology for measuring selected acoustic descriptors (sound absorption coefficient and sound transmission loss) for acoustic materials, which are currently in process of development. Emphasis is put on sandwich structures of absorbers. Verification results of the proposed methodology are presented.