Design and experimental investigation of broadband quasi-perfect composite loaded sound absorber at low frequencies
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DOI: 10.1016/j.apacoust.2021.108026
Abstract: Abstract We designed a composite loaded sound absorber (CLSA) composed of a sub-wavelength Helmholtz resonator and porous material, which was loaded on the side branches of a rectangular tube. Based on the transfer matrix method,… read more here.
Keywords: broadband quasi; quasi perfect; sound absorber; absorption ... See more keywords
Quasi-perfect absorption of broadband low-frequency sound in a two-port system based on a micro-perforated panel resonator
Sign Up to like & getrecommendations! Published in 2022 at "Applied Acoustics"
DOI: 10.1016/j.apacoust.2021.108449
Abstract: Abstract In this study, micro-perforated panel (MPP) resonators are designed to exhibit quasi-perfect absorption in a two-port system. Compared to a one-port system in which near-unity absorption can be achieved by attenuating the reflected wave,… read more here.
Keywords: absorption; quasi perfect; system; frequency ... See more keywords