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. 27, 2015
Filed:
Jul. 14, 2011
Francois Marquis, Corminboeuf, CH;
Hans-ueli Röck, Hombrechtikon, CH;
Samuel Harsch, Ballaigues, CH;
Yacine Azmi, San Jose, CA (US);
Tim Jost, Auvernier, CH;
Francois Marquis, Corminboeuf, CH;
Hans-Ueli Röck, Hombrechtikon, CH;
Samuel Harsch, Ballaigues, CH;
Yacine Azmi, San Jose, CA (US);
Tim Jost, Auvernier, CH;
Sonova AG, Staefa, CH;
Abstract
A system for speech enhancement in a room having a directional lapel microphone arrangement for capturing an audio signal from a speaker's voice; audio signal processor for generating a processed audio signal from the captured audio signal, and an adaptive beamformer unit for imparting directivity to the microphone arrangement provides maximum sensitivity towards the speaker's mouth and minimum sensitivity towards noise sources identified by the beamformer unit. A unit shifts the frequency of components of the audio signal above a frequency threshold value only. A feedback cancelling unit has an adaptive filter and a selection unit which automatically switches between a first mode causing the audio signal to by-pass the adaptive filter and a second mode in which the audio signal is filtered by the adaptive filter. A loudspeaker arrangement generates sound according to the processed audio signal and has plural loudspeakers arranged to form a directional loudspeaker array.