公开(公告)号：US12063477B2

公开(公告)日：2024-08-13

申请号：US17890647

申请日：2022-08-18

Applicant: Oticon A/S

Inventor： Jan M. De Haan ,  Jesper Jensen ,  Michael Syskind Pedersen ,  Svend Feldt ,  Stig Petri ,  Jakob Sloth Lauridsen

IPC: H04R25/00 ,  H04R1/40 ,  H04S7/00

CPC classification number: H04R25/505 ,  H04R1/406 ,  H04R25/554 ,  H04S7/302 ,  H04S2420/01

Abstract: A hearing system comprises a) a multitude of M of microphones providing M corresponding electric input signals xm(n), m=1, . . . , M, and n representing time, b) a processor connected to said multitude of microphones and providing a processed signal in dependence thereof, c) an output unit for providing an output signal in dependence of said processed signal, and d) a database (Θ) comprising a dictionary (Δpd) of previously determined acoustic transfer function vectors (ATFpd). The processor is configured A) to determine a constrained estimate of a current acoustic transfer function vector (ATFpd,cur) in dependence of said M electric input signals and said dictionary (Δpd), B) to determine an unconstrained estimate of a current acoustic transfer function vector (ATFuc,cur) in dependence of said M electric input signals, and C) to determine a resulting acoustic transfer function vector (ATF*) for a user of the hearing system in dependence thereof and of a confidence measure related to said electric input signals. A method of operating a hearing device is also disclosed. Thereby an improved noise reduction system for a hearing aid or headset may be provided.