PT Journal
AU Badida, M
   Bartko, L
   Lumnitzer, E
   Szabo, R
TI Research of Selected Acoustic Descriptors of Two-Layer Sandwich Absorbers
SO Acta Mechanica Slovaca
PY 2011
BP 22
EP 29
VL 15
IS 3
DI 10.21496/ams.2011.024
DE Environmental Noise; Transportation; Noise Wall; Sound Absorption Coefficient; Sound Transmission Loss; Absorber; Sandwich Absorber
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.
ER