US 12,114,133 B2
Hearing device comprising a feedback control system
Meng Guo, Smørum (DK); Mojtaba Farmani, Smørum (DK); Anders Meng, Smørum (DK); Thomas Kaulberg, Smørum (DK); and Peter Sommer, Smørum (DK)
Assigned to OTICON A/S, Smørum (DK)
Filed by Oticon A/S, Smørum (DK)
Filed on Oct. 18, 2022, as Appl. No. 17/968,186.
Claims priority of application No. 21203433 (EP), filed on Oct. 19, 2021.
Prior Publication US 2023/0121895 A1, Apr. 20, 2023
Int. Cl. H04R 25/00 (2006.01)
CPC H04R 25/453 (2013.01) [H04R 25/305 (2013.01); H04R 25/505 (2013.01); H04R 25/603 (2019.05); H04R 25/604 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A hearing aid adapted for being worn by a user at or in an ear of the user, the hearing aid comprising
at least one input transducer for converting sound in an environment around the user to at least one electric input signal representing said sound;
an output transducer for converting a processed output signal provided in dependence of said at least one electric input signal to stimuli perceivable to the user as sound;
a feedback control system comprising an adaptive filer, the feedback control system being configured
to provide an adaptively determined estimate (h*(n)) of a current feedback path (h(n)) from said output transducer to said at least one input transducer in dependence of
said at least one electric input signal,
said processed output signal, and
an adaptive algorithm; and
a database comprising a multitude (M) of previously determined candidate feedback paths (hm); and
a controller configured to identify a change in the current feedback path (h(n)) based on the adaptively determined estimate (h*(n)) of the current feedback path and at least one of said multitude of previously determined candidate feedback paths (hm).