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Method and apparatus for embedding spatial information and reproducing embedded signal for an audio signal

  • US 8,214,220 B2
  • Filed: 05/26/2006
  • Issued: 07/03/2012
  • Est. Priority Date: 05/26/2005
  • Status: Active Grant
First Claim
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1. A method of decoding an audio signal, comprising:

  • receiving a downmix signal embedding data including spatial information, the downmix signal including at least one frame, the frame including at least one sub-frame being comprised of a plurality of samples, the data being embedded in lower bits of each sample of the downmix signal, and the spatial information being sequentially embedded in most significant bit first within the lower bits;

    obtaining header information of the data from the downmix signal, the header information being embedded in least significant bit of at least one sample of the downmix signal, the header information including an insertion bit length for each sub-frame of the downmix signal, the insertion bit length indicating a length of bits containing the spatial information;

    obtaining the spatial information based on the insertion bit length; and

    generating a multi-channel audio signal by applying the spatial information to the downmix signal.

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