System and Methods for Continuous Audio Matching

摘要

The present invention relates to the continuous monitoring of an audio signal and identification of audio items within an audio signal. The technology disclosed utilizes predictive caching of fingerprints to improve efficiency. Fingerprints are cached for tracking an audio signal with known alignment and for watching an audio signal without known alignment, based on already identified fingerprints extracted from the audio signal. Software running on a smart phone or other battery-powered device cooperates with software running on an audio identification server.

主权项

1. A non-transitory computer readable medium storing code that, when executed by one or more processors, causes the one or more processors to:
send an audio query to a server; responsive to the server matching the query with a reference item in a database, receive from the server an audio fingerprint sequence and an audio identifier associated with the matched reference audio item, the audio fingerprint sequence representing some portion of the matched reference audio item; update a cache with the audio fingerprint sequence and the associated audio identifier; extract an input audio fingerprint from a frame of an audio signal; and match the input audio fingerprint to the audio fingerprint sequence stored in the cache to identify an audio item in the audio signal.