Acoustic devices
US11234086B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2020 |
| Grant date | Jan 25, 2022 |
| Priority date | — |
| Expiry date | Jan 10, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2430/03
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An acoustic device, comprising: a device body comprising: an acoustic membrane having a first surface and a second surface opposite the first surface; and at least one acoustic cavity formed adjacent the first surface of the acoustic membrane; a plurality of piezoelectric beam resonators supported over the first surface of the acoustic membrane and separated from the first surface by the at least one acoustic cavity, each of the plurality of piezoelectric beam resonators having at least one different natural frequency; wherein each of the plurality of piezoelectric beam resonators is configured to oscillate in response to sound pressure waves incident at the acoustic device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.