Apparatus and method for generating a bandwidth extended signal

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United States of America Patent

PATENT NO RE49801
SERIAL NO

16230764

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Abstract

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An apparatus for generating a bandwidth extended signal from an input signal includes a patch generator and a combiner. The input signal is represented for first and second bands by first and second resolution data, respectively, the second resolution being lower than the first. The patch generator generates first and second patches from the first band of the input signal according to first and second patching algorithms, respectively. A spectral density of the second patch generated using the second patching algorithm is higher than a spectral density of a first patch generated using the first patching algorithm. The combiner combines both patches and the first band of the input signal to obtain the bandwidth extended signal. The apparatus scales the input signal according to the first and second patching algorithms or scales the first and second patches, so that the bandwidth extended signal fulfills a spectral envelope criterion.

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Patent Owner(s)

Patent OwnerAddress
FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E VHANSASTRASSE 27C MUENCHEN 80686

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bayer, Stefan Nuremberg, DE 141 2306
Disch, Sascha Fuerth, DE 255 3633
Gayer, Marc Erlangen, DE 62 788
Kraemer, Ulrich Stuttgart, DE 57 1313
Lohwasser, Markus Hersbruck, DE 42 476
Nagel, Frederik Nuremberg, DE 97 1981
Neuendorf, Max Nuremberg, DE 123 2391
Rettelbach, Nikolaus Nuremberg, DE 142 3154

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