SE516835C2 - Ekosläckningsförfarande - Google Patents

Ekosläckningsförfarande

Info

Publication number
SE516835C2
SE516835C2 SE9500553A SE9500553A SE516835C2 SE 516835 C2 SE516835 C2 SE 516835C2 SE 9500553 A SE9500553 A SE 9500553A SE 9500553 A SE9500553 A SE 9500553A SE 516835 C2 SE516835 C2 SE 516835C2
Authority
SE
Sweden
Prior art keywords
echo
algorithm
filter
kalman
diagonal
Prior art date
Application number
SE9500553A
Other languages
English (en)
Swedish (sv)
Other versions
SE9500553D0 (sv
SE9500553L (sv
Inventor
Karl Torbjoern 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.)
Filing date
Publication date
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to SE9500553A priority Critical patent/SE516835C2/sv
Publication of SE9500553D0 publication Critical patent/SE9500553D0/xx
Priority to FI973336A priority patent/FI973336A7/fi
Priority to CN96193074A priority patent/CN1084978C/zh
Priority to BR9607508A priority patent/BR9607508A/pt
Priority to CA002211865A priority patent/CA2211865A1/en
Priority to KR1019970705675A priority patent/KR100375277B1/ko
Priority to AU47355/96A priority patent/AU698609B2/en
Priority to EP96903308A priority patent/EP0809893B1/de
Priority to JP8524883A priority patent/JPH11500278A/ja
Priority to DE69622537T priority patent/DE69622537T2/de
Priority to PCT/SE1996/000178 priority patent/WO1996025805A1/en
Publication of SE9500553L publication Critical patent/SE9500553L/
Priority to MXPA/A/1997/006008A priority patent/MXPA97006008A/xx
Priority to US08/908,943 priority patent/US5995620A/en
Publication of SE516835C2 publication Critical patent/SE516835C2/sv

Links

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)
SE9500553A 1995-02-15 1995-02-15 Ekosläckningsförfarande SE516835C2 (sv)

Priority Applications (13)

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
AU47355/96A AU698609B2 (en) 1995-02-15 1996-02-12 Echo canceller having Kalman filter for optimal adaptation
JP8524883A JPH11500278A (ja) 1995-02-15 1996-02-12 最適カルマンフィルタを使用したエコー消去装置
BR9607508A BR9607508A (pt) 1995-02-15 1996-02-12 Processo de supressão de eco em um sistema de telecomunicação
CA002211865A CA2211865A1 (en) 1995-02-15 1996-02-12 Echo canceller having kalman filter for optimal adaptation
KR1019970705675A KR100375277B1 (ko) 1995-02-15 1996-02-12 최적적응을위한칼만필터를지닌반향(反響)소거장치
FI973336A FI973336A7 (fi) 1995-02-15 1996-02-12 Kaiunpoistaja, jolla on Kalman-suodin optimaalista adaptaatiota varten
EP96903308A EP0809893B1 (de) 1995-02-15 1996-02-12 Echokompensator mit kalman-filter zur optimalen adaption
CN96193074A CN1084978C (zh) 1995-02-15 1996-02-12 具有用于最佳适应的卡尔曼滤波器的回声消除方法
DE69622537T DE69622537T2 (de) 1995-02-15 1996-02-12 Echokompensator mit kalman-filter zur optimalen adaption
MXPA/A/1997/006008A MXPA97006008A (en) 1995-02-15 1997-08-06 Eco canceler that has a kalman filter for optaptation opt
US08/908,943 US5995620A (en) 1995-02-15 1997-08-08 Echo canceller having Kalman filter for optimal adaptation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9500553A SE516835C2 (sv) 1995-02-15 1995-02-15 Ekosläckningsförfarande

Publications (3)

Publication Number Publication Date
SE9500553D0 SE9500553D0 (sv) 1995-02-15
SE9500553L SE9500553L (sv) 1996-08-16
SE516835C2 true SE516835C2 (sv) 2002-03-12

Family

ID=20397228

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9500553A SE516835C2 (sv) 1995-02-15 1995-02-15 Ekosläckningsförfarande

Country Status (12)

Country Link
US (1) US5995620A (de)
EP (1) EP0809893B1 (de)
JP (1) JPH11500278A (de)
KR (1) KR100375277B1 (de)
CN (1) CN1084978C (de)
AU (1) AU698609B2 (de)
BR (1) BR9607508A (de)
CA (1) CA2211865A1 (de)
DE (1) DE69622537T2 (de)
FI (1) FI973336A7 (de)
SE (1) SE516835C2 (de)
WO (1) WO1996025805A1 (de)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
ZA985834B (en) * 1997-07-21 1999-01-14 Henkel Corp Method for reinforcing structural members
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
GB201309771D0 (en) 2013-05-31 2013-07-17 Microsoft Corp Echo removal
GB201309773D0 (en) 2013-05-31 2013-07-17 Microsoft Corp Echo removal
GB201309777D0 (en) * 2013-05-31 2013-07-17 Microsoft Corp Echo suppression
GB201309779D0 (en) 2013-05-31 2013-07-17 Microsoft Corp Echo removal
EP3800639B1 (de) * 2015-03-27 2022-12-28 Dolby Laboratories Licensing Corporation Adaptive audiofiltrierung
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

Also Published As

Publication number Publication date
FI973336L (fi) 1997-10-14
JPH11500278A (ja) 1999-01-06
EP0809893A1 (de) 1997-12-03
CA2211865A1 (en) 1996-08-22
AU4735596A (en) 1996-09-04
AU698609B2 (en) 1998-11-05
DE69622537T2 (de) 2002-11-21
FI973336A7 (fi) 1997-10-14
US5995620A (en) 1999-11-30
DE69622537D1 (de) 2002-08-29
CN1180460A (zh) 1998-04-29
FI973336A0 (fi) 1997-08-14
EP0809893B1 (de) 2002-07-24
WO1996025805A1 (en) 1996-08-22
SE9500553D0 (sv) 1995-02-15
SE9500553L (sv) 1996-08-16
MX9706008A (es) 1997-11-29
BR9607508A (pt) 1997-12-23
CN1084978C (zh) 2002-05-15
KR100375277B1 (ko) 2004-02-11

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