Abstract
As 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.
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