Audio or video encoder, audio or video decoder and related methods for processing multi-channel audio or video signals using a variable prediction direction

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United States of America Patent

PATENT NO RE49717
SERIAL NO

16950757

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Abstract

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An encoder/decoder is based on a combination of two audio or video channels to obtain a first combination signal as a mid-signal and a residual signal derivable using a predicted side signal derived from the mid-signal. A decoder uses the prediction residual signal, the first combination signal, a prediction direction indicator and prediction information to derive decoded first channel and second channel signals. A real-to-imaginary transform can be applied for estimating the imaginary part of the spectrum of the first combination signal. The prediction signal used in the derivation of the prediction residual signal, the real-valued first combination signal is multiplied by a real portion of the complex prediction information and the estimated imaginary part of the first combination signal is multiplied by an imaginary portion of the complex prediction information.

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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
Disch, Sascha Fuerth, DE 255 3633
Edler, Bernd Hannover, DE 103 1348
Helmrich, Christian Erlangen, DE 154 944
Hilpert, Johannes Nuremberg, DE 126 3106
Neusinger, Matthias Rohr, DE 65 1386
Rettelbach, Nikolaus Nuremberg, DE 142 3154
Robilliard, Julien Nuremberg, DE 25 770

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