Recent Trends in Porous Sound-Absorbing Materials

By J. Arenas, M. Crocker. 2010

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Investigation on sound absorption properties for recycled fibrous materials (2013, background): “Also, soundabsorbing materials should always be used in conjunction with barriers and inside enclosures to improve their effectiveness [4].”
Sound Absorption Properties of Natural Fibers: A Review (2020, background): “Apart from that, the manufacturing of natural fibrous sound absorbers involves a significantly lower carbon footprint compared to conventional synthetic sound absorbers [11].”
Acoustic metasurface with hybrid resonances. (2014, background): “Although the material dissipation coefficient β cannot be easily adjusted, this hybrid impedance-matching condition is still robust as we have two other parameters, s̄ and 1ω̄h, which can be easily tuned 22 to satisfy equations (4) and (5).”
Acoustic Absorption of Natural Fiber Composites (2016, background): “The acoustic panels made from natural fibers are less hazardous to human health and more eco-friendly than those made of conventional synthetic fibers [1].”