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. 18, 2015
Filed:
Mar. 15, 2013
Widex A/s, Lynge, DK;
Jorge Cederberg, Farum, DK;
Henning Haugaard Andersen, Birkerod, DK;
Mette Dahl Meincke, Varlose, DK;
Andreas Brinch Nielsen, Copenhagen, DK;
Widex A/S, Lynge, DK;
Abstract
A hearing aid comprising a frequency shifter () has means () for detecting a first frequency and a second frequency in an input signal. The frequency shifter () transposes a first frequency range of the input signal to a second frequency range of the input signal based on the presence of a fixed relationship between the first and the second detected frequency. The means () for detecting the fixed relationship between the first and the second frequency is used for controlling the frequency transposer (). A speech detector () configured for detecting the presence of voiced and unvoiced speech is provided for suppressing the transposition of voiced-speech signals in order to preserve the speech formants. The purpose of transposing frequency bands in this way in a hearing aid is to render inaudible frequencies audible to a user of the hearing aid while maintaining the original envelope, harmonic coherence and speech intelligibility of the signal. The invention further provides a method for shifting a frequency range of an input signal in a hearing aid.