EP 0948237 B1 20080611 - Method for noise suppression in a microphone signal
Title (en)
Method for noise suppression in a microphone signal
Title (de)
Verfahren zur Störbefreiung eines Mikrophonsignals
Title (fr)
Procédé pour la suppression du bruit dans un signal de microphone
Publication
Application
Priority
DE 19814971 A 19980403
Abstract (en)
[origin: EP0948237A2] The noise reduction method uses subtraction of a noise compensation signal from the microphone signal (y), the noise compensation signal provided by simulation of the noise signal via an adaptive filter (H) using a least mean square algorithm, supplied with a reference signal, e.g. a loudspeaker signal, with transformation of the microphone signal, the compensation signal and the output signal into the frequency range.
IPC 8 full level
G10L 21/0208 (2013.01); H04R 3/00 (2006.01); G10L 21/0216 (2013.01)
CPC (source: EP US)
G10L 21/0208 (2013.01 - EP US); H04R 3/007 (2013.01 - EP US); G10L 2021/02168 (2013.01 - EP US)
Designated contracting state (EPC)
AT CH DE ES FR GB IT LI NL SE
DOCDB simple family (publication)
EP 0948237 A2 19991006; EP 0948237 A3 20060208; EP 0948237 B1 20080611; AT E398326 T1 20080715; DE 19814971 A1 19991007; DE 59914782 D1 20080724; US 6895095 B1 20050517
DOCDB simple family (application)
EP 99106123 A 19990401; AT 99106123 T 19990401; DE 19814971 A 19980403; DE 59914782 T 19990401; US 28506499 A 19990402