Apparatus and method for noise reduction using phased-array ultra-open metamaterials
WO2025170988A1PCT designated stage Publication Date: 2025-08-14TRUSTEES OF BOSTON UNIV +4
Patent Information
- Application Number
- PCT/US2025/014569
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-02-05
- Filing Date
- 2025-02-05
- Publication Date
- 2025-08-14
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Figure US2025014569_14082025_PF_FP_ABST
Abstract
A noise reduction apparatus and method provide noise reduction or acoustic silencing in an environment. A sound input receives incident sound plane waves propagating in the environment. A metamaterial element in the apparatus receives the incident sound plane waves. The metamaterial element presents a phase gradient to the incident sound plane waves such that the incident sound plane waves are converted to surface waves, such that noise in the environment is reduced.
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Citation Information
Patent Citations
Asymmetric sound wave separator based on binary metasurface
CN114999437A
Air-transparent selective sound silencer using ultra-open metamaterial
US20200043456A1
Acoustic metamaterial systems
US20220180853A1