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METHOD AND APPARATUS FOR ENCODING AND DECODING AN AUDIO SIGNAL

  • US 20090216543A1
  • Filed: 06/30/2006
  • Published: 08/27/2009
  • Est. Priority Date: 06/30/2005
  • Status: Active Grant
First Claim
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1. A method of decoding an audio signal, comprising:

  • receiving an audio signal including a downmix signal and an ancillary signal;

    obtaining type information of the ancillary signal;

    checking header identification information indicating whether a header is included in the ancillary signal based on the type information of the ancillary signal;

    extracting time align information from the header when the header is included in the ancillary signal according to the header identification information;

    identifying a start position of a frame of the ancillary signal using the time align information,wherein the type information indicates whether the ancillary signal includes only a frame or both a frame and a header.

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