EP 0930801 B1 20081105 - Circuit and method for adaptive suppression of acoustic feedback
Title (en)
Circuit and method for adaptive suppression of acoustic feedback
Title (de)
Schaltung und Verfahren zur adaptiven Unterdrückung einer akustischen Rückkopplung
Title (fr)
Circuit et procédé pour la suppression adaptative de la réaction acoustique
Publication
Application
Priority
CH 6498 A 19980114
Abstract (en)
[origin: EP0930801A2] Two de-correlating filters (12,13) are formed as lattice-type filters. The first filter is used to decorrelate an echo-compensated input signal (en), while the second filter decorrelates the delayed output signal using coefficients originating from the first filter. The two filters are configured for calculation of their lattice coefficients using adaptive decorrelation of the echo-compensated input signal. A method of adaptively suppressing acoustic feedback is also claimed.
IPC 8 full level
H04R 3/02 (2006.01); H04R 25/00 (2006.01)
CPC (source: EP US)
H04R 25/453 (2013.01 - EP US); H04R 25/505 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE DK FR GB LI
DOCDB simple family (publication)
EP 0930801 A2 19990721; EP 0930801 A3 20060524; EP 0930801 B1 20081105; AU 745946 B2 20020411; AU 9826598 A 19990805; DE 59814316 D1 20081218; DK 0930801 T3 20090223; US 6611600 B1 20030826
DOCDB simple family (application)
EP 98811273 A 19981230; AU 9826598 A 19981231; DE 59814316 T 19981230; DK 98811273 T 19981230; US 22835599 A 19990111