Manufacturing of membrane acoustical metamaterials for low frequency noise reduction and control: A review

AbstractAs a subcategory of acoustic metamaterials, membrane acoustic metamaterials (MAMs) are lighter and more adjustable than other types of acoustic metamaterials when it comes to low-frequency sound absorption. Currently, their primary application is in air mediums. However, there is a small body of research exploring MAMs' underwater potential, as they are expected to offer a solution for controlling low-frequency sound in underwater environments. This review provides an overview of the basic and derived structures of MAMs, and analyses how to adjust the eigenfrequency of both passive and active MAMs to support researchers who are the field of MAMs.Keywords: Membrane acoustic metamaterials (MAMs)low frequencymanufacturenoise reductionattached mass Disclosure statementThe authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.Additional informationFundingThis research is supported by the National Natural Science Foundation of China (62205086), Postdoctoral Foundation of Heilongjiang Province of China (3236320038), and Postdoctoral Applied Research Project of Qingdao (79002002/007).