Audio fingerprint for content identification

A method for identifying content streaming to a television, the method executed by a processor, comprising:

• retrieving a set of audio fingerprints associated with a plurality of contents that are scheduled for rendering;
• storing the set of audio fingerprints in a local cache associated with the television;
• receiving a request for rendering a content on the television;
• retrieving an audio signal for the content selected for rendering at the television;
• analyzing a particular segment of the audio signal to identify acoustic modulations in the particular segment, the analysis generating a vector for the particular segment based on the acoustic modulation, the vector identifying a plurality of floating point numbers related to data points of the particular segment, the vector defining an unique audio fingerprint of the particular segment of the audio signal;
• determining if a match is found for the audio fingerprint of the particular segment of the audio signal locally within the local cache by comparing the vector of the particular segment against the data points defined in the audio fingerprints of the plurality of contents stored in the local cache;
• when a match is found in the local cache, querying a content provider database using a content identifier of a particular content matching the vector of the particular segment to obtain a portion of the particular content;
• and
• rendering the particular content obtained from the content provider database in response to the request while continuing to periodically verify locally the content remains selected by matching the audio fingerprints of additional one or more segments of the audio signal to the audio fingerprints stored in the local cache.

A method, comprising:

• receiving, at a television, an audio signal for multimedia content selected for rendering on the television;
• using a processor, partitioning the audio signal into a plurality of segments;
• using a processor, analyzing a particular segment to identify acoustic modulations, the analysis generating a vector based on the acoustic modulation, the vector defining an unique audio fingerprint having a plurality of floating point numbers of data points;
• querying a content database on a server using the vector of the particular segment of audio signal to identify a description for multimedia content, the content database including pre-computed data points for a plurality of multimedia content, the identification of the description including matching of the vector to the pre-computed data points in the content database, the querying causing the identified description for the multimedia content to be retrieved and stored in a local cache for local verification that the selected multimedia content remains selected, the retrieved and stored description includes pre-computed data points of the particular segment and pre-computed data points of upcoming one or more segments of the multimedia content rendering on the television.