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:
Dec. 17, 2013
Filed:
Apr. 19, 2012
Guillaume Fuchs, Erlangen, DE;
Vignesh Subbaraman, Germering, DE;
Nikolaus Rettelbach, Nuremberg, DE;
Markus Multrus, Nuremberg, DE;
Marc Gayer, Erlangen, DE;
Patrick Warmbold, Emskirchen, DE;
Christian Griebel, Nuremberg, DE;
Oliver Weiss, Nuremberg, DE;
Guillaume Fuchs, Erlangen, DE;
Vignesh Subbaraman, Germering, DE;
Nikolaus Rettelbach, Nuremberg, DE;
Markus Multrus, Nuremberg, DE;
Marc Gayer, Erlangen, DE;
Patrick Warmbold, Emskirchen, DE;
Christian Griebel, Nuremberg, DE;
Oliver Weiss, Nuremberg, DE;
Abstract
An audio decoder for providing a decoded audio information includes an arithmetic decoder for providing a plurality of decoded spectral values on the basis of an arithmetically-encoded representation of the spectral values and a frequency-domain-to-time-domain converter for providing a time-domain audio representation using decoded spectral values. The arithmetic decoder is configured to select a mapping rule describing a mapping of a code value onto a symbol code in dependence on a context state. The arithmetic decoder is configured to determine a numeric current context value describing the current context state in dependence on a plurality of previously decoded spectral values and also in dependence on whether a spectral value to be decoded is in a first predetermined frequency region or in a second predetermined frequency region. An audio encoder provides an encoded audio information on the basis of an input audio information.