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Multi-mode audio recognition and auxiliary data encoding and decoding

  • US 9,401,153 B2
  • Filed: 03/15/2013
  • Issued: 07/26/2016
  • Est. Priority Date: 10/15/2012
  • Status: Active Grant
First Claim
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1. A method of embedding a watermark in an electronic audio signal, the method comprising:

  • with a programmed processor, classifying the audio signal according to audio type;

    the classifying including analyzing the audio signal to detect a voiced and an unvoiced sound;

    based on the audio type, selecting with a programmed processor an audio perceptual model adapted for a detected voiced or unvoiced sound and insertion method; and

    with a programmed processor, inserting a watermark of an audio watermark type in the audio signal according to the selected perceptual model.

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