Abstract
An infinite panel with two types of resonators regularly installed on it is theoretically considered. Each resonator is an air-filled cavity hermetically closed by a plate, which executes piston vibrations. The plate and air inside the cavity play the roles of mass and elasticity, respectively. Every other resonator is reversed. At a certain ratio between the parameters of the resonators at the tuning frequency of the entire system, the acoustic-pressure force that directly affects the panel can be fully compensated by the action forces of the resonators. In this case, the sound-proofing ability (transmission loss) tends to infinity. The presented calculations show that a complete transmission-loss effect can be achieved even with low-Q resonators.
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Original Russian Text © L.A. Lazarev, 2015, published in Akusticheskii Zhurnal, 2015, Vol. 61, No. 4, pp. 522–528.
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Lazarev, L.A. Panels with low-Q-factor resonators with theoretically infinite sound-proofing ability at a single frequency. Acoust. Phys. 61, 476–481 (2015). https://doi.org/10.1134/S1063771015030124
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DOI: https://doi.org/10.1134/S1063771015030124