Hearing device comprising a beamformer filtering unit
US10165373B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 2017 |
| Grant date | Dec 25, 2018 |
| Priority date | — |
| Expiry date | Apr 7, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R2430/20
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A hearing aid comprises a) first and second microphones b) an adaptive beamformer filtering unit comprising, b1) a first and second memories comprising a first and second sets of complex frequency dependent weighting parameters representing a first and second beam patterns, where said first and second sets of weighting parameters are predetermined initial values or values updated during operation of the hearing aid, b3) an adaptive beamformer processing unit providing an adaptation parameter βopt(k) representing an adaptive beam pattern configured to attenuate unwanted noise under the constraint that sound from a target direction is essentially unaltered, b4) a third memory comprising a fixed adaptation parameter βfix(k) representing a third, fixed beam pattern, b5) a mixing unit providing a resulting complex, frequency dependent adaptation parameter βmix(k) as a combination of said fixed and adaptively determined frequency dependent adaptation parameters βfix(k) and βopt(k), respectively, and b6) a resulting beamformer (Y) for providing a resulting beamformed signal YBF based on first and second microphone signals, said first and second sets of complex frequency dependent weightin…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.