Acoustic metamaterial in low-frequency underwater noise mitigation
Yijie Zhang · Acoustical Society of America (ASA) · 2025
A lightweight, 3-D-printed acoustic metamaterial is proposed and lab-tested to attenuate wide-band low-frequency underwater noise via sound insulation.
Plain English summary
Why this matters
Key findings
- Proposed a lightweight, easily manufactured acoustic metamaterial design for wide-band low-frequency underwater noise mitigation.
- Uses a sound-insulation mechanism for noise control.
- Lab-scale tests on a 3-D-printed structure show ~25 dB attenuation across more than three octaves.
- Maximum reported reduction level is about 60 dB.
Limitations
The abstract provides lab-scale test results but does not specify real-world deployment, durability in marine conditions, bandwidth limits beyond the stated range, or comparisons against specific conventional methods.
Publication
- Publisher
- Acoustical Society of America (ASA)
- Publication date
- October 1, 2025
- Research type
- Paper
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