Challenge for high performance sound absorbers using microperforated panels

微穿孔面板(MPP)是具有亚毫米穿孔的薄板或薄膜。在这项研究中，提出了各种使用MPPS的吸声结构。对所提出的每一种吸声结构进行了理论分析，并对其中一些结构的试件进行了实验测量。结果表明，采用MPPS的结构可以有效地应用于实际工程中。这项研究还包括了对它们的实际应用有用的各个方面。

A microperforated panel (MPP) is a thin panel or film with submillimetre perforations. In this study, various sound absorbing structures using MPPs are proposed. Each of the proposed sound absorbing structures was theoretically analysed, and the trial products of some of those structures were experimentally measured. The results show that those structures using MPPs can be used effectively in practice. The study also includes various aspects which are useful for practical applications of them.