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APPARATUS AND METHOD FOR COMPUTING FILTER COEFFICIENTS FOR ECHO SUPPRESSION

Vorrichtung und Verfahren zum Berechnen von Filterkoeffizienten zur Echounterdrückung
 
: Küch, F.; Kallinger, M.; Faller, C.; Favrot, A.

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Frontpage ()

US 20080025006 P: 20080131
WO 2009EP00270 A: 20090116
WO 2009095161 A1: 20090806
English
Patent, Electronic Publication
Fraunhofer IIS ()

Abstract
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.

: http://publica.fraunhofer.de/documents/N-202072.html