An adjustable acoustic metamaterial cell using a magnetic membrane for tunable resonance.

ABSTRACT: Acoustic metamaterials are growing in popularity for sound applications including noise control. Despite this, there remain significant challenges associated with the fabrication of these materials for the sub-100 Hz regime, because acoustic metamaterials for such frequencies typically require sub-mm scale features to control sound waves. Advances in additive manufacturing technologies have provided practical methods for rapid fabrication of acoustic metamaterials. However, there is a relatively high sensitivity of their resonant characteristics to sub-mm deviations in geometry, pushing the limits of additive manufacturing. One way of overcoming this is via active control of device resonance. Here, an acoustic metamaterial cell with adjustable resonance is demonstrated for the sub-100 Hz r

SUBMITTER: Gardiner A 

PROVIDER: S-EPMC11637203 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature