Entrainment avoidance with an auto regressive filter
US9191752B2 · kind B2 · utility
1Cited by
43References
16Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 24, 2014 |
| Grant date | Nov 17, 2015 |
| Priority date | — |
| Expiry date | Mar 24, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2460/01
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method 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 an adaptive filter to measure an acoustic feedback path from the receiver to the microphone and adjusting an adaptation rate of the adaptive filter using an output from a filter having an autoregressive portion, the output derived at least in part from a ratio of a predictive estimate of the input signal to a difference of the predictive estimate and the input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.