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:
Apr. 12, 2011
Filed:
Apr. 25, 2006
Applicants:
Thomas BO Elmedyb, Smørum, DK;
Johan Hellgren, Smørum, DK;
Inventors:
Thomas Bo Elmedyb, Smørum, DK;
Johan Hellgren, Smørum, DK;
Assignee:
Oticon A/S, Smorum, DK;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 15/00 (2006.01); H04R 27/00 (2006.01); H04R 3/00 (2006.01); H04R 25/00 (2006.01); H03F 99/00 (2009.01);
U.S. Cl.
CPC ...
Abstract
The invention concerns an audio system comprising a microphone, audio signal processing means, an output transducer and mans for detecting a possible feedback tone and the corresponding frequency of the feedback tone in the audio system between the output transducer and the microphone. According to the invention means for counteracting feedback are provided. Further, mans are provided for changing the phase of the audio signal at a given frequency.