ATE214850T1 - Vorrichtung zur reduzierung der gefahr unerwünschter parameterabweichungen eines adaptiven, zur echo unterdrückung verwendeten filter - Google Patents

Vorrichtung zur reduzierung der gefahr unerwünschter parameterabweichungen eines adaptiven, zur echo unterdrückung verwendeten filter

Info

Publication number
ATE214850T1
ATE214850T1 AT93902608T AT93902608T ATE214850T1 AT E214850 T1 ATE214850 T1 AT E214850T1 AT 93902608 T AT93902608 T AT 93902608T AT 93902608 T AT93902608 T AT 93902608T AT E214850 T1 ATE214850 T1 AT E214850T1
Authority
AT
Austria
Prior art keywords
branch
transmitting
signal
filter
risk
Prior art date
Application number
AT93902608T
Other languages
English (en)
Inventor
Tore Mikael Andre
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
Application granted granted Critical
Publication of ATE214850T1 publication Critical patent/ATE214850T1/de

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • H03H21/0012—Digital adaptive filters
    • H03H21/0067—Means or methods for compensation of undesirable effects
    • 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

  • 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)
AT93902608T 1992-01-10 1992-12-17 Vorrichtung zur reduzierung der gefahr unerwünschter parameterabweichungen eines adaptiven, zur echo unterdrückung verwendeten filter ATE214850T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9200062A SE469677B (sv) 1992-01-10 1992-01-10 Anordning foer att minska risken foer en icke oenskad parameterdrift hos ett adaptivt filter som anvaends foer ekoeliminering
PCT/SE1992/000872 WO1993014566A1 (en) 1992-01-10 1992-12-17 Apparatus for reducing the risk of undesirable parameterdrift of an adaptive filter used for echo cancellation

Publications (1)

Publication Number Publication Date
ATE214850T1 true ATE214850T1 (de) 2002-04-15

Family

ID=20384984

Family Applications (1)

Application Number Title Priority Date Filing Date
AT93902608T ATE214850T1 (de) 1992-01-10 1992-12-17 Vorrichtung zur reduzierung der gefahr unerwünschter parameterabweichungen eines adaptiven, zur echo unterdrückung verwendeten filter

Country Status (15)

Country Link
US (1) US5428681A (de)
EP (1) EP0620956B1 (de)
JP (1) JPH07503109A (de)
KR (1) KR940704084A (de)
AT (1) ATE214850T1 (de)
AU (1) AU665231B2 (de)
BR (1) BR9207028A (de)
CA (1) CA2125658A1 (de)
DE (1) DE69232501D1 (de)
ES (1) ES2173092T3 (de)
FI (1) FI943271A (de)
MX (1) MX9300074A (de)
NO (1) NO306278B1 (de)
SE (1) SE469677B (de)
WO (1) WO1993014566A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4430189A1 (de) * 1994-08-25 1996-02-29 Sel Alcatel Ag Verfahren zur adaptiven Echokompensation
US5852661A (en) * 1995-02-17 1998-12-22 Advanced Micro Devices, Inc. Adaptive echo cancellation used with echo suppression to reduce short and long duration echoes
US5592548A (en) * 1995-05-31 1997-01-07 Qualcomm Incorporated System and method for avoiding false convergence in the presence of tones in a time-domain echo cancellation process
US5689556A (en) * 1995-09-15 1997-11-18 Hughes Electronics Method of detecting narrow-band signals in an echo canceller
US6728223B1 (en) * 1996-06-28 2004-04-27 Mci Communications Corporation Echo canceller system
KR20010005775A (ko) * 1998-01-30 2001-01-15 요트.게.아. 롤페즈 통신시스템에서 에코를 제거하는 방법, 통신 장치, 및 무선 전화 장치의 무선 기지국
TW441171B (en) * 1999-09-16 2001-06-16 Ind Tech Res Inst Learning method and apparatus for adaptive digital filter

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4672665A (en) * 1984-07-27 1987-06-09 Matsushita Electric Industrial Co. Ltd. Echo canceller
US4712235A (en) * 1984-11-19 1987-12-08 International Business Machines Corporation Method and apparatus for improved control and time sharing of an echo canceller
CA1242541A (en) * 1985-11-25 1988-09-27 Dany Sylvain Echo cancellation in two-wire transmission path repeaters
US4845746A (en) * 1987-06-23 1989-07-04 Rockwell International Corporation Echo canceller with relative feedback control
DE3840433A1 (de) * 1988-12-01 1990-06-07 Philips Patentverwaltung Echokompensator

Also Published As

Publication number Publication date
CA2125658A1 (en) 1993-07-22
AU3411793A (en) 1993-08-03
US5428681A (en) 1995-06-27
NO942418L (no) 1994-06-24
AU665231B2 (en) 1995-12-21
SE9200062D0 (sv) 1992-01-10
JPH07503109A (ja) 1995-03-30
DE69232501D1 (de) 2002-04-25
EP0620956B1 (de) 2002-03-20
MX9300074A (es) 1993-07-01
BR9207028A (pt) 1995-12-05
EP0620956A1 (de) 1994-10-26
WO1993014566A1 (en) 1993-07-22
SE469677B (sv) 1993-08-16
KR940704084A (ko) 1994-12-12
ES2173092T3 (es) 2002-10-16
SE9200062L (sv) 1993-07-11
FI943271A0 (fi) 1994-07-08
NO306278B1 (no) 1999-10-11
NO942418D0 (de) 1994-06-24
FI943271A (fi) 1994-07-08

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Legal Events

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RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties