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

EP 0655731 A3 19970528 (EN)

Application

EP 94118782 A 19941129

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

G10L 3/02

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)

Citation (search report)

• [X] JP H05188994 A 19930730 - SONY CORP & US 5353408 A 19941004 - KATO YASUHIKO [JP], et al
• [XA] EP 0459364 A1 19911204 - MATSUSHITA ELECTRIC IND CO LTD [JP]
• [XA] EP 0438174 A2 19910724 - MATSUSHITA ELECTRIC IND CO LTD [JP]
• [A] PALIWAL K K: "Speech enhancement using multipulse excited linear prediction system", ICASSP 86 PROCEEDINGS. IEEE-IECEJ-ASJ INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING (CAT. NO.86CH2243-4), TOKYO, JAPAN, 7-11 APRIL 1986, 1986, NEW YORK, NY, USA, IEEE, USA, PAGE(S) 101 - 104 VOL.1, XP002027701

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