Entrainment avoidance with a transform domain algorithm
US8509465B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 23, 2007 |
| Grant date | Aug 13, 2013 |
| Priority date | — |
| Expiry date | Mar 21, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R25/353
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system of signal processing an input signal in a hearing aid to avoid entrainment, the hearing aid including a receiver and a microphone, the method comprising using a transform domain adaptive filter including two or more eigenvalues to measure an acoustic feedback path from the receiver to the microphone, analyzing a measure of eigenvalue spread against a predetermined threshold for indication of entrainment of the transform domain adaptive feedback cancellation filter, and upon indication of entrainment of the transform domain adaptive feedback cancellation filter, modulating the adaptation of the transform domain adaptive feedback cancellation filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.