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Data hiding via phase manipulation of audio signals

  • US 20050033579A1
  • Filed: 06/18/2004
  • Published: 02/10/2005
  • Est. Priority Date: 06/19/2003
  • Status: Active Grant
First Claim
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1. A method for embedding data in an audio signal, the method comprising:

  • (a) dividing the audio signal into a plurality of time frames and, in each time frame, a plurality of frequency components;

    (b) in each of at least some of the plurality of time frames, selecting at least two of the plurality of frequency components; and

    (c) altering a phase of at least one of the plurality of frequency components in accordance with the data to be embedded.

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