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Multi-mode audio recognition and auxiliary data encoding and decoding

  • US 10,546,590 B2
  • Filed: 12/20/2017
  • Issued: 01/28/2020
  • Est. Priority Date: 10/15/2012
  • Status: Expired due to Fees
First Claim
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1. A method of detecting an audio watermark, the method comprising:

  • receiving an audio signal;

    classifying the audio signal;

    based on classifying audio, adapting a filter for filtering the audio signal for audio watermark detection;

    filtering the audio signal with the adapted filter;

    extracting symbol estimates of the audio watermark from the filtered audio; and

    decoding a digital payload from the extracted symbol estimates.

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