System and method for matching a query against a broadcast stream

摘要

A method for matching a query against a broadcast stream includes receiving one or more broadcast streams, from which it generates and stores an audio fingerprint of a selected portion of each received broadcast stream. A query is received from which the method generates an audio fingerprint. From that point, the method continues by identifying audio content from the query, using the query audio fingerprint and a database of indexed audio content. The method concludes by identifying the source of the query using the query audio fingerprint and the stored audio fingerprints. Embodiments of the method further include predictively caching audio fingerprint sequences and corresponding audio item identifiers from a server after storing audio fingerprints extracted from the broadcast stream; and using the predictively cached audio fingerprint sequences to identify an audio item within the audio signal based on at least some additional audio fingerprints of the audio signal.

主权项

1. A method of identifying an audio content sample that originates from an actual broadcast, including:
monitoring a plurality of broadcast stations, fingerprinting and saving the fingerprints of broadcast audio content in a database of unidentified broadcast content as it is received; accessing playlists, comprising portions of identified broadcast audio content from the plurality of monitored broadcast stations, and fingerprints corresponding to the identified broadcast audio content; receiving data representing sampled audio content from a portable device and searching for a match between fingerprints of the sampled audio content and the fingerprints corresponding to at least parts of multiple playlists, further including:
upon finding a fingerprint match against the fingerprints corresponding to a particular playlist for a particular monitored broadcast station, reporting the particular monitored broadcast station as a source of the broadcast audio content, and a description of the broadcast audio content back to the portable device; andupon not finding a fingerprint match against the fingerprints corresponding to any of the multiple playlists, further searching for a match of the fingerprints of the sampled audio content, against at least one of:
parts of the database of unidentified broadcast content from the monitored broadcast stations, to identify a source of the broadcast audio content; anda reference database of identified audio content not associated with a particular broadcast station, to identify the sampled audio content; andreporting back to the portable device at least one of the source of the broadcast audio content and the identity of the sampled audio content.