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:
Jan. 28, 2014
Filed:
Mar. 24, 2011
Erik Gosuinus Petrus Schuijers, Oss, NL;
Sebastiaan DE Bont, Eindhoven, NL;
Erik Gosuinus Petrus Schuijers, Oss, NL;
Sebastiaan de Bont, Eindhoven, NL;
NXP, B.V., Eindhoven, NL;
Abstract
The invention relates to multi-channel audio signal processing, in particular to a method of processing a multi-channel audio signal and to a signal processing device. A method of processing a multi-channel audio signal is disclosed, comprising the steps of: receiving an input sum signal (s) representing a sum of a first audio signal and a second audio signal; receiving an input difference signal (d) representing a difference between the first and second audio signals; decorrelating the sum signal to provide a decorrelated sum signal (s); calculating a first gain (g) from a cross-correlation of the sum and difference signals (s,d) and the power of the sum signal; calculating a second gain (g) from a cross-correlation of the sum and difference signals (s,d) and the power of the sum and difference signals; calculating an output difference signal (d') from a sum of the first gain (g) applied to the sum signal (s) and the second gain (g) applied to the decorrelated sum signal (s); and providing an output stereo audio signal (l,r) from a combination of the output difference signal (d′) and the input sum signal (s).
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