Noise cancellation
US5113389A · kind A · utility
12Cited by
13References
86Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 18, 1991 |
| Grant date | May 12, 1992 |
| Priority date | — |
| Expiry date | Mar 18, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B3/238
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
In a noise cancellation system an adaptive filter produces a noise cancellation signal. The cancellation signal is compensated in response to indications of timing variations. For a linear traversal filter compensating coefficients (25) are provided which combine with, or relace, their respective primary coefficients when a timing variation occurs. Higher order compensating coefficients may be provided for selected taps and a modular structure is adopted thus facilitating implementation in integtrated form.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.