EP 0411360 B1 19940907 - Method and apparatus for interference suppression in speech signals.
Title (en)
Method and apparatus for interference suppression in speech signals.
Title (de)
Verfahren und Anordnung zur Störbefreiung von Sprachsignalen.
Title (fr)
Procédé et dispositif pour éliminer les signaux parasites dans un signal de parole.
Publication
Application
Priority
DE 3925589 A 19890802
Abstract (en)
[origin: EP0411360A1] In a method and apparatus for interference suppression in speech signals for speech recognition purposes, the speech being converted along with other sound phenomena into an electric signal (summation signal) and the other sound phenomena consisting of noises and a sound phenomenon produced by electro-acoustic conversion of an audio signal, the noises are furthermore recorded and converted into a noise signal. The noise signal and the audio signal are passed via adaptive filters and subtracted from the summation signal. The resulting signal is compared with the noise signal on the one hand and with the audio signal on the other hand. The results of the comparison are used to control the adaptive filters. <IMAGE>
IPC 1-7
IPC 8 full level
G10L 21/02 (2006.01); G10L 21/0208 (2013.01); H04B 15/02 (2006.01); G10L 21/0216 (2013.01)
CPC (source: EP)
G10L 21/0208 (2013.01); G10L 2021/02166 (2013.01); H04R 2410/05 (2013.01); H04R 2499/13 (2013.01)
Designated contracting state (EPC)
DE FR GB IT SE
DOCDB simple family (publication)
EP 0411360 A1 19910206; EP 0411360 B1 19940907; DE 3925589 A1 19910214; DE 3925589 C2 19940317; DE 59007045 D1 19941013; JP H0370324 A 19910326
DOCDB simple family (application)
EP 90113320 A 19900712; DE 3925589 A 19890802; DE 59007045 T 19900712; JP 20404290 A 19900802