Methods and apparatus for characterizing media

H - Electricity – 04 – H

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H04H 20/14 (2009.01) G10L 23/00 (2009.01)

Patent

CA 2678942

Methods and apparatus for characterizing media are described. In one example, a method of characterizing media includes capturing a block of audio; converting at least a portion of the block of audio into a frequency domain representation including a plurality of complex-valued frequency components; defining a band of complex-valued frequency components for consideration; determining a decision metric using the band of complex-valued frequency components; and determining a signature bit based on a value of the decision metric. Other examples are shown and described.

La présente invention concerne des procédés et un appareil servant à caractériser des supports. Dans un exemple, un procédé consistant à caractériser des supports comprend les étapes consistant à capturer un bloc de données audio; convertir au moins une partie du bloc de données audio en une représentation de domaine de fréquence comportant une pluralité de composants de fréquence évaluée complexe; définir une bande de composants de fréquence évaluée complexe destinée à une considération; déterminer une mesure de décision en utilisant la bande de composants de fréquence évaluée complexe; et déterminer un élément binaire de signature en fonction d'une valeur de la mesure de décision. D'autres exemples sont représentés et décrits.

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