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. 29, 2016
Filed:
Jul. 20, 2012
Jan Mueller, Nuremberg, DE;
Robin Thesing, Nuremberg, DE;
Michael Beer, Erlangen, DE;
Dolby International AB, Amsterdam Zuidoost, NL;
Abstract
The invention relates to an apparatus () for improving a stereo audio signal of an FM stereo radio receiver (). It is suggested to employ components of a standard HE-ACC v2 decoder () in such apparatus () to efficiently recover the stereo audio signal (L\R') while also exhibiting good signal quality. To that end, parametric stereo parameters () shall be quantized and submitted to such decoder () together with a mono-downmix signal (). The decoder () can then easily recover the parametric stereo parameters () by de-quantizing them via a simple lookup table, and finally creating the stereo output signal (L′R′) from the de-quantized parametric stereo parameters and the mono-downmix signal (). The apparatus () further includes a parameter estimation stage () which may again be embodied on the basis of components of a standard HE-ACC v2 encoder (). After estimating the parametric stereo parameters () and generating the mono-downmix signal (), the encoder () will not use further encoding other than the already performed PS-coding. An apparatus () according to the invention therefore advantageously includes decoder () and/or encoder () components of a standard HE-ACC v2 codec—utilizing its parametric stereo parameter processing capabilities.