MDCT-based complex prediction stereo coding

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United States of America Patent

PATENT NO 11810582
SERIAL NO

17560295

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Abstract

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The invention provides methods and devices for stereo encoding and decoding using complex prediction in the frequency domain. In one embodiment, a decoding method, for obtaining an output stereo signal from an input stereo signal encoded by complex prediction coding and comprising first frequency-domain representations of two input channels, comprises the upmixing steps of:

    (i) computing a second frequency-domain representation of a first input channel; and(ii) computing an output channel on the basis of the first and second frequency-domain representations of the first input channel, the first frequency-domain representation of the second input channel and a complex prediction coefficient. The upmixing can be suspended responsive to control data.

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Patent Owner(s)

  • DOLBY INTERNATIONAL AB

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Carlsson, Pontus Bromma, SE 53 713
Purnhagen, Heiko Sundbyberg, SE 274 3344
Villemoes, Lars Järfälla, SE 291 4057

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