Method for analyzing a digital music audio signal

Details Method for analyzing a digital music audio signal Method for analyzing a digital music audio signal

G - Physics

10

H

G10H 1/38 (2006.01)

Patent

CA 2740638

The present invention concerns a music audio representation method for analyzing a music audio signal (2) in order to extract a set of Chord Family Profiles (CFP) contained in the audio music signal (2), the method comprising the steps of: a) applying a first algorithm (4) to the music audio signal (2) in order to extract first data (5) representative of the tonality of music audio signal (2), and b) applying a second algorithm (6) to said first data (5) in order to provide second data (7) representative of the tonal centre contained in the first data (5).

Linvention concerne un procédé de représentation audio musical pour analyser un signal audio musical (2) afin dextraire un ensemble de profils de famille daccords (CFP) contenu dans le signal audio musical (2), le procédé comprenant les étapes suivantes : a) application dun premier algorithme (4) sur le signal audio musical (2) afin dextraire les première données (5) représentatives de la tonalité du signal audio musical (2), et b) application dun second algorithme (6) auxdites premières données (5) afin de fournir des secondes données(7) représentatives du centre tonal contenu dans les premières données (5).

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