BR9607508A - Processo de supressão de eco em um sistema de telecomunicação - Google Patents

Processo de supressão de eco em um sistema de telecomunicação

Info

Publication number: BR9607508A
Authority: BR; Brazil
Prior art keywords: telecommunication system; suppression process; echo suppression; echo; telecommunication
Prior art date: 1995-02-15

Application number

BR9607508A

Other languages

English (en)

Inventor

Karl Torbjorn Wigren

Original Assignee

Ericsson Telefon Ab L M

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1995-02-15

Filing date

1996-02-12

Publication date

1997-12-23

1996-02-12 Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M

1997-12-23 Publication of BR9607508A publication Critical patent/BR9607508A/pt

Classifications

- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H21/00—Adaptive networks
- H03H21/0012—Digital adaptive filters
- H03H21/0025—Particular filtering methods
- H03H21/0029—Particular filtering methods based on statistics
- H03H21/003—KALMAN filters
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
- H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers

Landscapes

Physics & Mathematics (AREA)
Probability & Statistics with Applications (AREA)
Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Filters That Use Time-Delay Elements (AREA)
Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Feedback Control In General (AREA)

BR9607508A 1995-02-15 1996-02-12 Processo de supressão de eco em um sistema de telecomunicação BR9607508A (pt)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
SE9500553A SE516835C2 (sv)	1995-02-15	1995-02-15	Ekosläckningsförfarande
PCT/SE1996/000178 WO1996025805A1 (en)	1995-02-15	1996-02-12	Echo canceller having kalman filter for optimal adaptation

Publications (1)

Publication Number	Publication Date
BR9607508A true BR9607508A (pt)	1997-12-23

Family

ID=20397228

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BR9607508A BR9607508A (pt)	1995-02-15	1996-02-12	Processo de supressão de eco em um sistema de telecomunicação

Country Status (12)

Country	Link
US (1)	US5995620A (pt)
EP (1)	EP0809893B1 (pt)
JP (1)	JPH11500278A (pt)
KR (1)	KR100375277B1 (pt)
CN (1)	CN1084978C (pt)
AU (1)	AU698609B2 (pt)
BR (1)	BR9607508A (pt)
CA (1)	CA2211865A1 (pt)
DE (1)	DE69622537T2 (pt)
FI (1)	FI973336L (pt)
SE (1)	SE516835C2 (pt)
WO (1)	WO1996025805A1 (pt)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
ZA985834B (en) *	1997-07-21	1999-01-14	Henkel Corp	Method for reinforcing structural members
WO2009140607A1 (en) *	2008-05-15	2009-11-19	Mayo Foundation For Medical Education And Research	Vibration generation and detection in shear wave dispersion ultrasound vibrometry with large background motions
US6570985B1 (en) *	1998-01-09	2003-05-27	Ericsson Inc.	Echo canceler adaptive filter optimization
US6754340B1 (en) *	1998-12-22	2004-06-22	Nortel Networks Limited	Stable adaptive filter and method
ES2160087B1 (es) *	2000-02-18	2003-03-01	Mier Comunicaciones S A	Procedimiento para la repeticion de señales en insofrecuencia y repetidor de señales en isofrecuencia.
US6377682B1 (en) *	2000-06-26	2002-04-23	Lucent Technologies Inc.	Robust adaptive filter for use in acoustic and network echo cancellation
JP4067269B2 (ja) *	2000-10-24	2008-03-26	独立行政法人科学技術振興機構	システム同定方法
DE10329055B4 (de) *	2003-06-27	2005-10-13	Infineon Technologies Ag	Verfahren und Vorrichtung zur Echokompensation
US7480595B2 (en) *	2003-08-11	2009-01-20	Japan Science And Technology Agency	System estimation method and program, recording medium, and system estimation device
GB2406487B (en) *	2003-09-24	2006-06-14	Zarlink Semiconductor Inc	Modified affine projection algorithm for non-stationary signal
US7187320B1 (en)	2004-08-27	2007-03-06	Lockheed Martin Corporation	Matched maneuver detector
WO2007119766A1 (ja) *	2006-04-14	2007-10-25	Incorporated National University Iwate University	システム同定方法及びプログラム及び記憶媒体、システム同定装置
US8027741B2 (en) *	2008-05-29	2011-09-27	The United States Of America As Represented By The Secretary Of The Navy	System and method of improved kalman filtering for estimating the state of a dynamic system
US8605890B2 (en) *	2008-09-22	2013-12-10	Microsoft Corporation	Multichannel acoustic echo cancellation
RU2011107596A (ru) *	2011-02-17	2012-08-27	Общество с ограниченной ответственностью "Айффорт Интернешнл" (RU)	Способ лечения аллергических заболеваний
US8924337B2 (en) *	2011-05-09	2014-12-30	Nokia Corporation	Recursive Bayesian controllers for non-linear acoustic echo cancellation and suppression systems
GB201309777D0 (en) *	2013-05-31	2013-07-17	Microsoft Corp	Echo suppression
GB201309779D0 (en)	2013-05-31	2013-07-17	Microsoft Corp	Echo removal
GB201309771D0 (en)	2013-05-31	2013-07-17	Microsoft Corp	Echo removal
GB201309773D0 (en)	2013-05-31	2013-07-17	Microsoft Corp	Echo removal
US10410653B2 (en) *	2015-03-27	2019-09-10	Dolby Laboratories Licensing Corporation	Adaptive audio filtering
CN105572219A (zh) *	2015-12-17	2016-05-11	安徽省特种设备检测院	压力管道焊缝金属磁记忆信号自适应处理方法
JP6894402B2 (ja) *	2018-05-23	2021-06-30	国立大学法人岩手大学	システム同定装置及び方法及びプログラム及び記憶媒体
CN108806709B (zh) *	2018-06-13	2022-07-12	南京大学	基于频域卡尔曼滤波的自适应声回声抵消方法
CN110297127B (zh) *	2019-05-28	2022-01-04	许昌许继软件技术有限公司	一种交流信号滤波方法及装置
CN114692465B (zh) *	2022-04-15	2023-09-08	石家庄铁道大学	桥梁损伤位置的无损识别方法、存储介质及设备

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4677668A (en) *	1984-05-01	1987-06-30	North Carolina State University	Echo canceller using parametric methods
US4760596A (en) *	1986-02-25	1988-07-26	Gte Laboratories Incorporated	Adaptive echo cancellation and equalization system signal processor and method therefor
IT1228106B (it) *	1988-12-21	1991-05-28	Sits Soc It Telecom Siemens	Procedimento e dispositivo per la cancellazione numerica adattativa dell'eco generato in collegamenti telefonici con caratteristiche varianti nel tempo
US5418849A (en) *	1988-12-21	1995-05-23	Siemens Telecomunicazioni S.P.A.	Procedure and device for adaptive digital cancellation of the echo generated in telephone connections with time-variant characteristics
JP2654894B2 (ja) *	1992-09-30	1997-09-17	日本電信電話株式会社	反響消去装置およびその方法
US5734715A (en) *	1995-09-13	1998-03-31	France Telecom	Process and device for adaptive identification and adaptive echo canceller relating thereto

1995
- 1995-02-15 SE SE9500553A patent/SE516835C2/sv not_active IP Right Cessation
1996
- 1996-02-12 EP EP96903308A patent/EP0809893B1/en not_active Expired - Lifetime
- 1996-02-12 CA CA002211865A patent/CA2211865A1/en not_active Abandoned
- 1996-02-12 DE DE69622537T patent/DE69622537T2/de not_active Expired - Fee Related
- 1996-02-12 AU AU47355/96A patent/AU698609B2/en not_active Ceased
- 1996-02-12 WO PCT/SE1996/000178 patent/WO1996025805A1/en not_active Ceased
- 1996-02-12 FI FI973336A patent/FI973336L/fi not_active Application Discontinuation
- 1996-02-12 JP JP8524883A patent/JPH11500278A/ja not_active Ceased
- 1996-02-12 CN CN96193074A patent/CN1084978C/zh not_active Expired - Fee Related
- 1996-02-12 KR KR1019970705675A patent/KR100375277B1/ko not_active Expired - Fee Related
- 1996-02-12 BR BR9607508A patent/BR9607508A/pt not_active IP Right Cessation
1997
- 1997-08-08 US US08/908,943 patent/US5995620A/en not_active Expired - Lifetime

Also Published As

Publication number	Publication date
MX9706008A (es)	1997-11-29
FI973336A7 (fi)	1997-10-14
KR100375277B1 (ko)	2004-02-11
AU698609B2 (en)	1998-11-05
JPH11500278A (ja)	1999-01-06
CN1084978C (zh)	2002-05-15
FI973336A0 (fi)	1997-08-14
FI973336L (fi)	1997-10-14
US5995620A (en)	1999-11-30
SE516835C2 (sv)	2002-03-12
EP0809893A1 (en)	1997-12-03
CN1180460A (zh)	1998-04-29
CA2211865A1 (en)	1996-08-22
DE69622537D1 (de)	2002-08-29
DE69622537T2 (de)	2002-11-21
WO1996025805A1 (en)	1996-08-22
SE9500553D0 (sv)	1995-02-15
AU4735596A (en)	1996-09-04
EP0809893B1 (en)	2002-07-24
SE9500553L (sv)	1996-08-16

Publication	Publication Date	Title
BR9607508A (pt)	1997-12-23	Processo de supressão de eco em um sistema de telecomunicação
BR9612049A (pt)	1999-07-13	Processo de cancelamento de eco e cancelador de eco
BR9505786A (pt)	1996-03-05	Processo para completar telefonema sistema inteligente de processamento de telefonemas processo e sistema para encaminhar telefonemas
DE69614482D1 (de)	2001-09-20	Bildverarbeitungssystem
BR9506208A (pt)	1996-04-23	Sistema de comunicação e processo para rotear chamadas para um terminal
DE59606086D1 (de)	2000-12-07	Kraftstoffanlage
FI972764A7 (fi)	1997-09-10	Menetelmä liuosten muodostamiseksi
IT1284187B1 (it)	1998-05-08	Serbatoio di carburante
BR9510683A (pt)	1999-03-30	Processo para evitar interferência em um sistema de telefonia a cabo
DE69635434D1 (de)	2005-12-22	Telekommunikationssystem
NO960355L (no)	1996-07-31	Spyleanordning
DE69602467D1 (de)	1999-06-24	Brennstoffsystem
ITMI950607A0 (it)	1995-03-27	Sistema di protezione a rapida messa in opera
DE69635072D1 (de)	2005-09-22	Telekommunikationssystem
DE59709634D1 (de)	2003-04-30	Vorrichtung in einer kraftstoffanlage
DE69612961D1 (de)	2001-06-28	Telekommunikationssystem
NO962798D0 (no)	1996-07-02	Anordning ved kommunikasjonssystem
BR9602005A (pt)	1998-10-06	Processo de hidroxicarbonilação de butadieno
BR9607853A (pt)	1998-07-14	Determinação de um parâmetro em um sistema físico
NO961407D0 (no)	1996-04-10	Anordning ved kommunikasjonssystem
NO954962L (no)	1996-07-17	Anordning ved telesystem
DE59606896D1 (de)	2001-06-21	Telekommunikationssystem
FI960648A7 (fi)	1996-08-14	Tietoliikennejärjestelmä
BR9501808A (pt)	1997-08-12	Supervisor de sistema de aterramento
BR7301740U (pt)	1995-05-23	Aperfeiçoamento em sistema de telesinalização via linha telefônica

Legal Events

Date	Code	Title	Description
2002-02-19	FF	Decision: intention to grant
2002-08-06	FG9A	Patent or certificate of addition granted
2011-07-12	B24C	Patent annual fee: request for for restoration	Free format text: REFERENTE A 12A,13A,14A E 15A ANUIDADE(S).
2014-04-08	B24H	Lapse because of non-payment of annual fees (definitively: art 78 iv lpi)
2020-12-01	B24F	Patent annual fee: publication cancelled	Free format text: ANULADA A PUBLICACAO CODIGO 24.8 NA RPI NO 2257 DE 08/04/2014 POR TER SIDO INDEVIDA.
2020-12-15	B21F	Lapse acc. art. 78, item iv - on non-payment of the annual fees in time	Free format text: REFERENTE AS 12A, 13A, 14A E 15A ANUIDADES.
2021-03-30	B24J	Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)	Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2606 DE 15-12-2020 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013.