Annotation
Two commercial sound absorbing materials and also a material made of thin tubes absorbing sound due to viscosity are studied using a simple method of acoustical interferometer and a theoretical description of these materials is also made.
PACS:
43.00.00 Acoustics
© 2016 Publisher M.V.Lomonosov Moscow State University
Authors
A.A. Belous, A.V.Shanin, A.I. Korolkov
Department of Acoustics, Faculty of Physics, Lomonosov Moscow State University. Moscow 119991, Russia
Department of Acoustics, Faculty of Physics, Lomonosov Moscow State University. Moscow 119991, Russia
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