EP 1768109 A4 20070502 - A BACKGROUND NOISE ELIMINATE DEVICE AND METHOD FOR SPEECH COMMUNICATION TERMINAL

Title (en)

A BACKGROUND NOISE ELIMINATE DEVICE AND METHOD FOR SPEECH COMMUNICATION TERMINAL

Title (de)

VORRICHTUNG UND VERFAHREN ZUR ELIMINIERUNG VON HINTERGRUNDGERÄUSCHEN FÜR EIN SPRACHKOMMUNIKATIONSENDGERÄT

Title (fr)

DISPOSITIF ET PROCEDE D'ELIMINATION DE BRUIT DE FOND POUR UN TERMINAL DE COMMUNICATION ORALE

Publication

EP 1768109 A4 20070502 (EN)

Application

EP 05774479 A 20050818

Priority

CN 2005001289 W 20050818
CN 200410058578 A 20040818

Abstract (en)

[origin: EP1768109A1] The present invention discloses a device for eliminating background noise of a voice communication terminal, which includes a Sound Sensor Module, an Adaptive Filter, a Noise Estimating Module and an Adding Module connected successively. The invention also discloses a method for eliminating background noise of a voice communication terminal, which includes: collecting sound signals including the a talker's voice and receiver background noise received by a listener; estimating the receiver background noise signal in the signal collected; reversing the phase of the estimated receiver background noise signal and adding the estimated receiver background noise signal with reversed phase on the talker's voice signal received by the voice communication terminal before playing the added signal for the listener. The device and method can properly counteract the background noise around an earphone, and reduce the interference of background noise to the listener.

IPC 8 full level

G10K 11/178 (2006.01); G10L 21/02 (2006.01); G10L 21/0208 (2013.01); H04B 1/10 (2006.01)

CPC (source: EP)

G10L 21/0208 (2013.01); H04R 1/1083 (2013.01)

Citation (search report)

[XY] EP 0661903 A2 19950705 - NEC CORP [JP]
[Y] WO 9115896 A1 19911017 - ACTIVE NOISE & VIBRATION TECH [US]
[X] US 5625684 A 19970429 - MATOUK ANTHONY F [US], et al
[A] WO 9402935 A1 19940203 - SINVENT AS [NO], et al
[A] US 5251263 A 19931005 - ANDREA DOUGLAS [US], et al
See references of WO 2006017993A1

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

EP 1768109 A1 20070328; EP 1768109 A4 20070502; CN 100337270 C 20070912; CN 1737905 A 20060222; WO 2006017993 A1 20060223

DOCDB simple family (application)

EP 05774479 A 20050818; CN 200410058578 A 20040818; CN 2005001289 W 20050818