| 摘要 |
<p>Process for scanning and/or synchronizing audio/video events that comprises the following operating steps: - at least one audio processor (AP1; AP2) acquires at least one signal (RS; SS) of the audio of an audio/video event; the audio processor (AP1; AP2) divides said signal (RS; SS) into a plurality (j) of segments (RSx) corresponding to different moments (tx) of the signal (RS; SS); the audio processor (AP1; AP2) generates a spectrogram (SG) comprising a plurality (n) of frequency bands (By) in each segment (RSx) of the signal (RS; SS); the audio processor (AP1; AP2) locates in the spectrogram (SG), among the bands (By) of each segment (RSx) of the signal (RS; SS), one or more peaks (Pxz) in which the magnitude (Mxy') of the corresponding band (By') is greater than the magnitudes (Mxy) of the other bands (By); - the audio processor (AP1; AP2) locates among said peaks (Pxz) of the spectrogram (SG) the transition peaks (P'xz) which at a given moment (tx') have a band (By') differing from the bands (By) of the peaks (Pxz) at a previous moment (tx'-l); the audio processor (AP1; AP2) combines in at least one or more transitions (TRw, TRw') the moment (tx') and the band (By') of a transition peak (P'x'z), with the moment (tx") and the band (By") of one or more subsequent transition peaks (P'x"z); the audio processor (API; AP2) associates one or more hashes (Hq) corresponding to one or more transitions (TRw, TRw') with the moment (tx') or the moments (tx', tx'") at which these transitions (TRw, TRw') occur in the signal (RS; SS). The present invention also relates to means (AP1; AP2, IF, DS) for scanning and/or synchronizing audio/video events.</p> |
