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MULTI-STAGE LOOKUP FOR ROLLING AUDIO RECOGNITION

  • US 20110173185A1
  • Filed: 01/13/2010
  • Published: 07/14/2011
  • Est. Priority Date: 01/13/2010
  • Status: Abandoned Application
First Claim
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1. A method for performing a multi-stage lookup, comprising the steps of:

  • receiving a query fingerprint of an unknown recording;

    generating at least one hash value corresponding to the query fingerprint;

    generating a list of candidate matches of known recordings by comparing the at least one hash value of the query fingerprint to a hash table containing a plurality of hash values corresponding to a plurality of audio fingerprints of the known recordings;

    comparing maxima of the query fingerprint to the maxima of a plurality of full-recording fingerprints of the known recordings contained in a full-recording fingerprint table to obtain an identifier corresponding to the unknown recording; and

    returning metadata based on the identifier.

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