Method and apparatus for adaptive echo and noise control

H - Electricity – 04 – M

Patent

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H04M 9/08 (2006.01)

Patent

CA 2545150

An method (500) and apparatus (100) for adaptive echo and noise control. A signal can be received at an input (140) to a communication or electronic device. Background noise in the signal can be determined. The order of noise suppression and echo cancellation can be adaptively determined (110) based on the background noise in the signal. Adaptively determining the order of noise suppression (230) and echo cancellation (220) can be performed by comparing the background noise to at least one threshold, performing echo cancellation prior to noise suppression on the signal if the background noise is below the at least one threshold, and performing noise suppression prior to echo cancellation on the signal if the background noise is above the at least one threshold.

Cette invention concerne un procédé (500) et un appareil (100) de commande adaptative d'écho et de bruit. Un signal peut être reçu au niveau d'une entrée (140) d'un dispositif de communication ou d'un dispositif électronique. Un bruit de fond dans le signal peut être déterminé. L'ordre d'élimination de bruit et d'annulation d'écho peut être déterminé de façon adaptative (110) sur la base du bruit de fond déterminé dans le signal. La détermination adaptative de l'ordre d'élimination de bruit (230) et d'annulation d'écho (220) peut être effectuée selon un procédé consistant à comparer le bruit de fond à au moins un seuil, à annuler l'écho avant d'éliminer le bruit sur le signal si le bruit de fond est inférieur audit seuil, et à éliminer le bruit avant d'annuler l'écho sur le signal si le bruit de fond est supérieur audit seuil.

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