公开(公告)号：US09635473B2

公开(公告)日：2017-04-25

申请号：US14855979

申请日：2015-09-16

Applicant: OTICON A/S

Inventor： Meng Guo ,  Jan Mark de Haan ,  Jesper Jensen

IPC: H04R25/00 ,  H04R3/00 ,  H04R5/033

CPC classification number: H04R25/405 ,  H04R3/005 ,  H04R5/033 ,  H04R25/407 ,  H04R25/505 ,  H04R2225/67 ,  H04R2430/25

Abstract: The application relates to a hearing device comprising a beamformer of the generalized sidelobe canceler (GSC) type. The application further relates to a method of operating a hearing device. The disclosure addresses a problem which occurs when using a GSC structure in a hearing device application. The problem arises due to a non-ideal target-cancelling beamformer. As a consequence, a target signal impinging from the look direction can—unintentionally—be attenuated by as much as 30 dB. To resolve this problem, it is proposed to monitor the difference between the output signals from the all-pass beamformer and the target-cancelling beamformer to control a time-varying regularization parameter in the GSC update. This has the advantage of providing a computationally simple solution to the non-ideality of the GSC beamformer. The invention may e.g. be used in hearing aids, headsets, ear phones, active ear protection systems, or combinations thereof.