To overcome the traditional problem of blocking low-frequency noise, this letter proposes a design of large-scale metamaterial panel with periodic tunable resonant cell arrays. Numerical calculations show that the tunable metamaterial panels exhibit multiple local resonance mechanisms, which result in sound transmission loss (STL) improvements over traditional mass law in low-frequency regions. The effective dynamic mass density and the tunability of sound insulation performance are further examined. Moreover, large-scale tunable metamaterial panel samples with 36 (6 × 6) unit cells are fabricated. And experimental measurements of sound insulation performance are conducted to validate the theoretical predictions.

中文翻译：

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用于低频隔音的轻量级大型可调超材料面板

为了克服传统的低频噪声阻隔问题，本文提出了一种具有周期性可调谐谐振单元阵列的大型超材料面板的设计。数值计算表明，可调谐超材料面板表现出多种局部共振机制，这导致在低频区域比传统质量定律的声音传输损耗 (STL) 有所改善。进一步研究了有效动态质量密度和隔音性能的可调性。此外，还制造了具有 36 个（6 × 6）晶胞的大规模可调超材料面板样品。并进行了隔音性能的实验测量以验证理论预测。