FI943271A0 - Anordning för att minska risken för en icke önskad parameterdrift hos ett adaptivt filter som används för ekoeliminering - Google Patents

Anordning för att minska risken för en icke önskad parameterdrift hos ett adaptivt filter som används för ekoeliminering

Info

Publication number
FI943271A0
FI943271A0 FI943271A FI943271A FI943271A0 FI 943271 A0 FI943271 A0 FI 943271A0 FI 943271 A FI943271 A FI 943271A FI 943271 A FI943271 A FI 943271A FI 943271 A0 FI943271 A0 FI 943271A0
Authority
FI
Finland
Prior art keywords
branch
transmitting
signal
filter
risk
Prior art date
Application number
FI943271A
Other languages
English (en)
Finnish (fi)
Other versions
FI943271A (sv
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
Publication of FI943271A0 publication Critical patent/FI943271A0/sv
Publication of FI943271A publication Critical patent/FI943271A/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
    • H03H21/0067—Means or methods for compensation of undesirable effects
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • 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)
FI943271A 1992-01-10 1994-07-08 Anordning för att minska risken för en icke önskad parameterdrift hos ett adaptivt filter som används för ekoeliminering FI943271A (sv)

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 (2)

Publication Number Publication Date
FI943271A0 true FI943271A0 (sv) 1994-07-08
FI943271A FI943271A (sv) 1994-07-08

Family

ID=20384984

Family Applications (1)

Application Number Title Priority Date Filing Date
FI943271A FI943271A (sv) 1992-01-10 1994-07-08 Anordning för att minska risken för en icke önskad parameterdrift hos ett adaptivt filter som används för ekoeliminering

Country Status (15)

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

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
WO1999039453A2 (en) * 1998-01-30 1999-08-05 Koninklijke Philips Electronics N.V. A method for cancelling echoes in a communication system, a communication device, and a radio base station of a cordless telephone device
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
BR9207028A (pt) 1995-12-05
JPH07503109A (ja) 1995-03-30
NO306278B1 (no) 1999-10-11
AU3411793A (en) 1993-08-03
DE69232501D1 (de) 2002-04-25
EP0620956B1 (en) 2002-03-20
NO942418L (no) 1994-06-24
ATE214850T1 (de) 2002-04-15
CA2125658A1 (en) 1993-07-22
NO942418D0 (sv) 1994-06-24
US5428681A (en) 1995-06-27
AU665231B2 (en) 1995-12-21
SE469677B (sv) 1993-08-16
EP0620956A1 (en) 1994-10-26
SE9200062L (sv) 1993-07-11
FI943271A (sv) 1994-07-08
ES2173092T3 (es) 2002-10-16
SE9200062D0 (sv) 1992-01-10
KR940704084A (ko) 1994-12-12
WO1993014566A1 (en) 1993-07-22
MX9300074A (es) 1993-07-01

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