Process and means for scanning and/or synchronizing audio/video events

摘要

A process for scanning and/or synchronizing audio/video events is described. According to the process, a signal is acquired and divided into a plurality of segments corresponding to different moments of the signal. A spectrogram is generated and peaks are located in the spectrogram. Transition peaks are located among said peaks, and the bands of such transition peaks are combined in one or more transitions to which hashes correspond. The hashes are associated with the time at which the transitions occur in the signal. Means for scanning and/or synchronizing audio/video events are also disclosed.

主权项

1. A process for scanning and/or synchronizing audio/video events, the process comprising the following operating steps:
acquiring at least one signal with at least one audio processor, the at least one signal associated with audio content of an audio/video event; dividing the acquired at least one signal into a plurality of segments corresponding to different moments of the signal; generating a spectrogram comprising a plurality of frequency bands in each segment of the plurality of segments of the divided signal; locating within the generated spectrogram, among the bands of each segment of the signal, one or more peaks in which a magnitude of the corresponding band is greater than each of a plurality of magnitudes of the other bands; locating among said located peaks of the generated spectrogram one or more transition peaks, each of which at a given moment have a band differing from the bands of the peaks at a previous moment; combining, in at least one or more transitions, the moment and the band of a transition peak, with the moment and the band of one or more subsequent transition peaks; and associating one or more hashes corresponding to one or more transitions with at least one moment at which the transitions occur in the acquired at least one signal.