Electrical audio signal processing systems and devices – Binaural and stereophonic – Quadrasonic
Reexamination Certificate
2003-10-02
2008-11-04
Edouard, Patrick N. (Department: 2626)
Electrical audio signal processing systems and devices
Binaural and stereophonic
Quadrasonic
C704S500000, C704S501000, C704S200000, C704S200100, C704S203000, C381S017000, C381S019000, C381S023000, C700S094000
Reexamination Certificate
active
07447317
ABSTRACT:
In processing a multi-channel audio signal having at least three original channels, a first downmix channel and a second downmix channel are provided, which are derived from the original channels. For a selected original channel of the original channels, channel side information are calculated such that a downmix channel or a combined downmix channel including the first and the second downmix channels, when weighted using the channel side information, results in an approximation of the selected original channel. The channel side information and the first and second downmix channels form output data to be transmitted to a decoder, which, in case of a low level decoder only decodes the first and second downmix channels or, in case of a high level decoder provides a full multi-channel audio signal based on the downmix channels and the channel side information.
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Geyersberger Stefan
Herre Jürgen
Hilpert Johannes
Hölzer Andreas
Spenger Claus
Edouard Patrick N.
Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung
Greenberg Laurence A.
Locher Ralph E.
Shah Paras
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