Method and device for sound activity detection and sound...

Details Method and device for sound activity detection and sound... Method and device for sound activity detection and sound...

G - Physics

10

L

G10L 11/00 (2006.01) G10L 19/02 (2006.01) G10L 21/02 (2006.01)

Patent

CA 2690433

A device and method for estimating a tonality of a sound signal comprise: calculating a current residual spectrum of the sound signal; detecting peaks in the current residual spectrum; calculating a correlation map between the current residual spec-trum and a previous residual spectrum for each detected peak; and calculating a long-term correlation map based on the calculated correlation map, the long-term correlation map being indicative of a tonality in the sound signal.

L'invention concerne un dispositif et un procédé pour estimer une tonalité d'un signal sonore, comprenant les étapes consistant à : calculer un spectre résiduel actuel du signal sonore; détecter les pics dans le spectre résiduel actuel; calculer une carte de corrélation entre le spectre résiduel actuel et un spectre résiduel précédent pour chaque pic détecté; et calculer une carte de corrélation à long terme sur la base de la carte de corrélation calculée, la carte de corrélation à long terme étant indicative d'une tonalité du signal sonore.

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