Method and apparatus for active noise control of high order modes in ducts
US5748750A · kind A · utility
10Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 10, 1997 |
| Grant date | May 5, 1998 |
| Priority date | — |
| Expiry date | Jun 10, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K2210/3219
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
An active noise control system for effective control of higher order modes of noise propagation within a duct is disclosed. A plurality of error sensors is disposed within an error sensors plane, which plane is perpendicular to the longitudinal axis of the duct. The disclosed process and apparatus minimizes the mean square distance between the points of the area associated to each error sensor. The resulting arrangement of errors sensors optimizes the overall area that the error sensors can control and consequently the global efficiency of the controlling system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.