System and method for simultaneously attenuating high-frequency sounds and amplifying low-frequency sounds produced by underwater acoustic pressure source
US11812221B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 20, 2021 |
| Grant date | Nov 7, 2023 |
| Priority date | — |
| Expiry date | Jan 16, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V1/3808
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A noise-abatement system includes a frame defining a predetermined frame volume, an acoustic pressure source attached to the frame, and a plurality of resonators attached to the frame surrounding the acoustic pressure source. The resonators can be formed in modular resonator groups. The resonators have an individual resonance frequency that can be tuned to the transition frequency between relatively high sound frequencies, produced by the acoustic pressure source, to be attenuated and relatively low frequencies, produced by the acoustic pressure source, to be amplified. The resonators attenuate the relatively high sound frequencies using their individual resonance frequency. The noise-abatement system has a collective resonance frequency that can amplify the relatively low sound frequencies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.