EP 0655731 B1 20000329 - Noise suppressor available in pre-processing and/or post-processing of a speech signal
Title (en)
Noise suppressor available in pre-processing and/or post-processing of a speech signal
Title (de)
Rauschunterdrückungseinrichtung zur Vorverarbeitung und/oder Nachbearbeitung von Sprachsignalen
Title (fr)
Dispositif de suppression de bruit utilisable dans le prétraitement et/ou traitement ultérieur d'un signal de parole
Publication
Application
Priority
JP 29717693 A 19931129
Abstract (en)
[origin: EP0655731A2] In a noise suppressor capable of suppressing a noise signal before encoding or after decoding, a sequence of speech signals is rendered by the use of an inverse filter or a decoder into a sound source signal corresponding to the speech signal sequence. The noise signal is suppressed from the sound source signal by the use of feature parameters derived from the speech signal sequence. The noise signal can be suppressed within a speech duration and/or a non-speech duration by detecting the speech and the non-speech durations from the feature parameters. <IMAGE>
IPC 1-7
IPC 8 full level
G10L 15/20 (2006.01); G10L 21/02 (2006.01); H03H 17/02 (2006.01); H03H 21/00 (2006.01)
CPC (source: EP)
G10L 21/0208 (2013.01); G10L 21/0364 (2013.01)
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0655731 A2 19950531; EP 0655731 A3 19970528; EP 0655731 B1 20000329; DE 69423703 D1 20000504; DE 69423703 T2 20000727; JP 2739811 B2 19980415; JP H07152395 A 19950616
DOCDB simple family (application)
EP 94118782 A 19941129; DE 69423703 T 19941129; JP 29717693 A 19931129