公开(公告)号：US10375486B2

公开(公告)日：2019-08-06

申请号：US16194082

申请日：2018-11-16

Applicant: Oticon A/S

Inventor： Andreas Thelander Bertelsen ,  Michael Syskind Pedersen ,  Jesper Jensen ,  Thomas Kaulberg ,  Morten Christophersen

IPC: H04R25/00 ,  G10L21/0232 ,  G10L21/0216

Abstract: A hearing aid comprises a) first and second microphones b) an adaptive beamformer filtering unit comprising, b1) a memory comprising a first and second sets of complex frequency dependent weighting parameters representing a first and second beam patterns, b3) an adaptive beamformer processing unit providing an adaptation parameter βopt(k) representing an adaptive beam pattern, b4) a 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 weighting parameters, and said resulting complex, frequency dependent adaptation parameter βmix(k).

公开(公告)号：US10165373B2

公开(公告)日：2018-12-25

申请号：US15482188

申请日：2017-04-07

Applicant: Oticon A/S

Inventor： Andreas Thelander Bertelsen ,  Michael Syskind Pedersen ,  Jesper Jensen ,  Thomas Kaulberg ,  Morten Christophersen

IPC: H04R25/00 ,  G10L21/0232 ,  G10L21/0216

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 weighting parameters, and said resulting complex, frequency dependent adaptation parameter βmix(k).