Patent ID: 8121830
Filing Date: 2012-02-21
Classification: G11B,H04H

Abstract:
1. A method to extract information from media content, the method comprising: receiving a media content signal; sampling the media content signal to generate digital samples; determining a frequency domain representation of the digital samples; determining a first rank of a first frequency in the frequency domain representation; determining a second rank of a second frequency in the frequency domain representation; combining the first rank and the second rank with a set of ranks to create a combined set of ranks; comparing the combined set of ranks to a set of reference sequences; determining information represented by the combined set of ranks based on the comparison; and storing the data in a tangible memory; wherein the first rank and the second rank are associated with a first message at a first time; and wherein combining the first rank and the second rank with the set of ranks to create the combined set of ranks includes determining an average of the first rank and at least another rank for the first frequency of interest of at least another message at a time earlier than the first time to determine a first average rank, determining an average of the second rank and at least another rank for the second frequency of interest of at least another message at a time earlier than the first time to determine a second average rank, combining the first average rank and the second average rank with the set of ranks to create the combined set of ranks.