Electromechanical acoustic liner
US6782109B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 2001 |
| Grant date | Aug 24, 2004 |
| Priority date | — |
| Expiry date | Apr 3, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K11/172
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A system responsive to acoustic waves includes a resonator having a bottom plate, side walls secured to the bottom plate, and a top plate disposed on top of the side walls. The top plate includes an orifice. The bottom plate or side walls of the resonator include at least one compliant portion. A reciprocal electromechanical transducer is coupled to the compliant portion of the resonator to form a transducer/compliant composite, wherein the transducer/compliant composite has an open circuit acoustic impedance. An electrical network is coupled to the transducer/compliant composite. The acoustic impedance of the transducer/compliant composite copied to the electrical network is different as compared to the open circuit impedance which perm its the frequency response of the system to be varied over a large range of frequencies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.