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:
Mar. 26, 2019
Filed:
Jan. 24, 2017
Fraunhofer-gesellschaft Zur Förderung Der Angewandten Forschung E.v., München, DE;
Christian Uhle, Ursensollen, DE;
Patrick Gampp, Erlangen, DE;
Oliver Hellmuth, Budenhof, DE;
Stefan Varga, Köln, DE;
Sebastian Scharrer, Altdorf, DE;
Abstract
An apparatus for enhancing an audio signal includes a signal processor for processing the audio signal in order to reduce or eliminate transient and tonal portions of the processed signal and a decorrelator for generating a first decorrelated signal and a second decorrelated signal from the processed signal. The apparatus further includes a combiner for weightedly combining the first and the second decorrelated signal and the audio signal or a signal derived from the audio signal by coherence enhancement using time variant weighting factors and to obtain a two-channel audio signal. The apparatus further includes a controller for controlling the time variant weighting factors by analyzing the audio signal so that different portions of the audio signal are multiplied by different weighting factors and the two-channel audio signal has a time variant degree of decorrelation.