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. 01, 2019
Filed:
Sep. 08, 2014
Dolby International Ab, Amsterdam Zuidoost, NL;
Lars Villemoes, Järfälla, SE;
Leif Jonas Samuelsson, Sundbyberg, SE;
Kristofer Kjoerling, Solna, SE;
Heiko Purnhagen, Sundbyberg, SE;
Leif Sehlstrom, Järfälla, SE;
Dolby International AB, Amsterdam Zuidoost, NL;
Abstract
An audio decoding system () for processing a two-channel input signal (X) comprises a parametric mixing stage (). The parametric mixing stage receives the two-channel input signal and a set of mixing parameters (P), and outputs a two-channel output signal (Y). The parametric mixing stage comprises a decorrelation stage () outputting a decorrelated signal (D) based on the input signal. The parametric mixing stage further comprises a mixing matrix () receiving the input signal and the de-correlated signal, and forming a two-channel linear combination of channels from the input signal and the decorrelated signal. The mixing matrix outputs the linear combination as the two-channel output signal. Coefficients of the linear combination are controllable by the set of mixing parameters, and at least four mixing parameters of the set are independently assignable. In example embodiments, multiple parametric mixing stages are used to independently reconstruct additional channels encoded in the input signal.