Invention Grant
- Patent Title: Hearing device comprising a feedback cancellation system based on signal energy relocation
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Application No.: US15785927Application Date: 2017-10-17
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Publication No.: US10200796B2Publication Date: 2019-02-05
- Inventor: Bernhard Künzle , Meng Guo
- Applicant: Oticon A/S , Bernafon AG
- Applicant Address: DK Smørum CH Berne
- Assignee: Oticon A/S,Bernafon AG
- Current Assignee: Oticon A/S,Bernafon AG
- Current Assignee Address: DK Smørum CH Berne
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: EP15184008 20150907
- Main IPC: H04R25/00
- IPC: H04R25/00 ; H04R1/10

Abstract:
A hearing device, e.g. a hearing aid, is provided, comprising a forward path comprising an input transducer for providing an electric input signal, a signal processing unit configured to apply a requested forward gain to the electric input signal, and an output transducer. The hearing device further comprises a feedback reduction unit for reducing a risk of howl due to feedback from the output transducer to the input transducer. The forward path and the external feedback path defines a roundtrip loop delay. The feedback reduction unit is configured to modulate said requested forward gain in time, to provide that the resulting forward gain exhibits a first, increased gain AH in a first time period TH and a second, reduced gain AL in a second time period TL, wherein at least one of AH, AL, TH, and TL is/are determined according to a predetermined or adaptively determined criterion including said roundtrip loop delay.
Public/Granted literature
- US20180041845A1 HEARING DEVICE COMPRISING A FEEDBACK CANCELLATION SYSTEM BASED ON SIGNAL ENERGY RELOCATION Public/Granted day:2018-02-08
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