Two-stage adaptive feedback cancellation scheme for hearing instruments
US6754356B1 · kind B1 · utility
16Cited by
6References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 6, 2000 |
| Grant date | Jun 22, 2004 |
| Priority date | — |
| Expiry date | Aug 25, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R25/453
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A feedback cancellation system for a hearing instrument is described. The feedback cancellation system includes both a constrained adaptive filter, the constrained adaptive filter can be constrained by initiation coefficients, as well as an adaptive gain modification. The adaptive gain modification allows the feedback cancellation to respond to substantially different environments from the test environment used to derive the initiation coefficients for the constrained adaptive filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.