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System and method for audio fingerprinting

  • US 6,963,975 B1
  • Filed: 08/10/2001
  • Issued: 11/08/2005
  • Est. Priority Date: 08/11/2000
  • Status: Expired due to Fees
First Claim
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1. A method to create a fingerprint for media entities, comprising:

  • reading data indicative of a media entity desiring at least one fingerprint, said media entity data containing a sequence of random bits having a length N;

    processing said media entity data in accordance with at least one fingerprinting algorithm, said fingerprinting algorithm employing bit-to-bit comparisons and at least one approximation technique to process fingerprints, wherein said processing further comprises;

    calculating the average information density of said media entities;

    determining the standard deviation of the calculated information of said media entities;

    calculating the average critical band energy of the said media entities;

    calculating the average standard deviation of the critical band energy of said media entities;

    determining the play-time of said media entities; and

    processing said information density, said standard deviation of said information density, said critical band energy, said standard deviation of said critical band, and said play time to produce a bit-sequence representative of said fingerprint.

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