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System and method for error concealment in digital audio transmission

  • US 7,447,639 B2
  • Filed: 12/14/2001
  • Issued: 11/04/2008
  • Est. Priority Date: 01/24/2001
  • Status: Expired due to Fees
First Claim
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1. A method comprising:

  • (a) formatting a stream of audio data provided by a audio source into a sequence of audio data intervals;

    (b) transform encoding the sequence of audio data intervals to form a sequence of encoded audio data intervals, each of the encoded audio data intervals having a plurality of transform coefficients;

    (c) analyzing the transform coefficients of the sequence of encoded audio data intervals in the sequence so as to identify encoded transient audio data intervals, each of the encoded transient audio data intervals including a short transient signal having first transient signal characteristics; and

    (d) embedding ancillary data into encoded audio data intervals preceding the encoded transient audio data intervals, the ancillary data providing notification that the encoded transient audio data intervals include the short transient signals.

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