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:
Oct. 04, 2011
Filed:
Dec. 19, 2007
Henning Haugaard Andersen, Birkerod, DK;
Kristian Tjalfe Klinkby, Varlose, DK;
Henning Haugaard Andersen, Birkerod, DK;
Kristian Tjalfe Klinkby, Varlose, DK;
Widex A/S, Lynge, DK;
Abstract
A hearing aid () comprises means () for reproducing frequencies above the upper frequency limit of a hearing impaired user. The hearing aid () according to the invention comprises means () for transposing higher bands of frequencies from outside the upper frequency limit of a hearing impaired user down in frequency based on a detected frequency in order to coincide with a lower band of frequencies within the frequency range perceivable by the hearing impaired user. The transposing means () comprise an adaptive notch filter () for detecting a dominant frequency in the lower band of frequencies, adaptation means () controlled by the adaptive notch filter (), an oscillator () controlled by the adaptation means (), and a multiplier () for performing the actual frequency transposition of the signal. The invention further provides a method for processing a signal in a hearing aid.