The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 21, 2018
Filed:
Sep. 14, 2016
Oticon A/s, Smørum, DK;
Bernafon Ag, Berne, CH;
Bernhard Künzle, Berne, CH;
Meng Guo, Smørum, DK;
OTICON A/S, Smørum, DK;
BERNAFON AG, Bern, CH;
Abstract
A hearing device, e.g. a hearing aid, comprises a forward path comprising an input transducer providing an electric input signal, a combination unit, a signal processing unit configured to apply a forward gain to signal of the forward path and to provide a processed electric output signal, a frequency shifting unit for de-correlating the processed electric output signal and the electric input signal, and an output transducer. The hearing device further comprises an adaptive filter for providing an estimate of an external feedback path, and located in the forward path. The feedback estimation unit provides a resulting feedback estimate signal, which is combined with the electric input signal in the combination unit to provide a resulting feedback corrected signal, and a correction unit for influencing said estimate of the feedback path by diminishing a residual bias, being a result of the frequency shift, in said resulting feedback estimate signal.