近年來，學者們發現聲學薄膜型超穎材料能有效的阻隔低頻聲音傳遞，並廣泛的延伸探討。本文中我們設計了一個新穎的結構，稱之為coupled membrane structure,並利用阻抗管與有限元素軟體分析其穿透損失。相較於單一層的超穎材料，此結構能產生新的穿透損失波谷與兩個峰值。此外，我們也探討了製程溫度與空氣層的影響。實驗結果與模擬結果相互吻合。

In recent years, the emergence of membrane-type acoustic metamaterial, which has been a subject of widely-extended discussion, provides a novel way to isolate the low-frequency noise. In this study, I fabricated a novel structure called coupled membrane structure which is comprised of two membrane-type metamaterials. I used the acoustic impedance tube and Comsol Multiphysics, a finite element analysis software package, to examine its transmission loss (TL). Compared to the single-layer metamaterial, an extra TL peak and valley are occurred. I also discovered that the effect of the thermal-curing temperature and air spacing on the TL curves. A good agreement between experiment and simulation is achieved.

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