G - Physics – 10 – L
Patent
G - Physics
10
L
G10L 21/02 (2006.01) H04B 3/23 (2006.01) H04M 9/08 (2006.01)
Patent
CA 2713450
An embodiment of an apparatus (200) for computing filter coefficients for an adaptive filter (210) for filtering a microphone signal so as to suppress an echo due to a loudspeaker signal includes extraction means (250) for extracting a stationary component signal or a non-stationary component signal from the loudspeaker signal or from a signal derived from the loudspeaker signal, and computing means (270) for computing the filter coefficients for the adaptive filter (210) on the basis of the extracted stationary component signal or the extracted non-stationary component signal.
Un mode de réalisation d'un appareil (200) servant à calculer des coefficients de filtre pour un filtre adaptatif (210) destiné à filtrer un signal de microphone de manière à supprimer un écho dû à un signal de haut-parleur comprend des moyens d'extraction (250) servant à extraire un signal de composant fixe ou un signal de composant non fixe du signal de haut-parleur ou d'un signal dérivé du signal de haut-parleur, et des moyens de calcul (270) servant à calculer les coefficients de filtre pour le filtre adaptatif (210) sur la base du signal de composant fixe extrait ou du signal de composant non fixe extrait.
Faller Christof
Favrot Alexis
Kallinger Markus
Kuech Fabian
Bcf Llp
Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung
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