EP 2621198 A2 20130731 - Adaptive feedback cancellation based on inserted and/or intrinsic signal characteristics and matched retrieval
Title (en)
Adaptive feedback cancellation based on inserted and/or intrinsic signal characteristics and matched retrieval
Title (de)
Verfahren zur adaptiven Rückkopplungsunterdrückung und Vorrichtung dafür
Title (fr)
Procédé de suppression adaptative de couplage acoustique et dispositif correspondant
Publication
Application
Previously filed application
10157933 20100326 EP
Priority
- EP 2009053920 W 20090402
- US 24567909 P 20090925
- EP 10157933 A 20100326
- EP 13164634 A 20100326
Abstract (en)
The object of the present invention is to provide an alternative scheme for minimizing feedback in audio processing systems. The audio processing system comprises an enhancement unit for estimating noise-like signal components in the electric signal of a forward path and providing a noise signal estimate output, based on filtering by an adaptive noise retrieval filter E of a signal y c from another microphone (e.g. of a contra-lateral listening device), and wherein a feedback path estimation unit is adapted to use the noise signal estimate output in the estimation of an acoustic feedback transfer function.
IPC 8 full level
H04R 25/00 (2006.01); H04R 3/02 (2006.01)
CPC (source: EP US)
G10K 11/17819 (2017.12 - EP US); G10K 11/17854 (2017.12 - EP US); G10K 11/17855 (2017.12 - EP US); G10K 11/17879 (2017.12 - EP US); G10K 11/17881 (2017.12 - EP US); G10K 11/17885 (2017.12 - EP US); H04R 3/02 (2013.01 - EP US); H04R 25/453 (2013.01 - EP); G10K 2210/108 (2013.01 - EP); G10K 2210/1081 (2013.01 - EP); G10K 2210/3055 (2013.01 - EP); H04R 25/552 (2013.01 - EP); H04R 25/554 (2013.01 - EP); H04R 2460/01 (2013.01 - EP)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
DOCDB simple family (publication)
EP 2237573 A1 20101006; EP 2237573 B1 20210310; EP 2621198 A2 20130731; EP 2621198 A3 20150325
DOCDB simple family (application)
EP 10157933 A 20100326; EP 13164634 A 20100326