SE400869B - Centreringsanordning for ett tverfilter hos en ekoeliminerare - Google Patents

Centreringsanordning for ett tverfilter hos en ekoeliminerare

Info

Publication number
SE400869B
SE400869B SE7507604A SE7507604A SE400869B SE 400869 B SE400869 B SE 400869B SE 7507604 A SE7507604 A SE 7507604A SE 7507604 A SE7507604 A SE 7507604A SE 400869 B SE400869 B SE 400869B
Authority
SE
Sweden
Prior art keywords
eliminator
eco
centering device
cross filter
filter
Prior art date
Application number
SE7507604A
Other languages
English (en)
Swedish (sv)
Other versions
SE7507604L (sv
Inventor
J Sourgens
D Lajotte
F Michelon
Original Assignee
Cit Alcatel
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 Cit Alcatel filed Critical Cit Alcatel
Publication of SE7507604L publication Critical patent/SE7507604L/xx
Publication of SE400869B publication Critical patent/SE400869B/xx

Links

Classifications

    • 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)
SE7507604A 1974-07-03 1975-07-02 Centreringsanordning for ett tverfilter hos en ekoeliminerare SE400869B (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7423133A FR2277470A1 (fr) 1974-07-03 1974-07-03 Dispositif de centrage d'un filtre transversal d'un annuleur d'echo

Publications (2)

Publication Number Publication Date
SE7507604L SE7507604L (sv) 1976-01-05
SE400869B true SE400869B (sv) 1978-04-10

Family

ID=9140828

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7507604A SE400869B (sv) 1974-07-03 1975-07-02 Centreringsanordning for ett tverfilter hos en ekoeliminerare

Country Status (14)

Country Link
US (1) US4024357A (cs)
JP (1) JPS5130412A (cs)
BE (1) BE830261A (cs)
BR (1) BR7504210A (cs)
DE (1) DE2528810A1 (cs)
DK (1) DK300175A (cs)
FR (1) FR2277470A1 (cs)
GB (1) GB1519295A (cs)
IE (1) IE41263B1 (cs)
IT (1) IT1039551B (cs)
LU (1) LU72814A1 (cs)
NL (1) NL7507903A (cs)
PL (1) PL104150B1 (cs)
SE (1) SE400869B (cs)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983001715A1 (en) * 1981-11-02 1983-05-11 Carlqvist, Bengt, Roland An fir-type balance filter incorporated in the transmitter-receiver unit in a telecommunication system
WO1983001716A1 (en) * 1981-11-02 1983-05-11 Carlqvist, Bengt, Roland Method of providing adaptive echo cancellation in transmission of digital information in duplex, and apparatus for performing the method

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2412210A1 (fr) * 1977-12-14 1979-07-13 Cit Alcatel Poste telephonique a haut-parleur
DE2853167C2 (de) * 1978-12-08 1980-10-30 Siemens Ag, 1000 Berlin Und 8000 Muenchen Teilnehmerschaltung
EP0073869B1 (fr) * 1981-09-08 1985-12-27 International Business Machines Corporation Dispositif de réception de données avec suppresseur d'écho d'écoute
US4587382A (en) * 1982-07-29 1986-05-06 Gte Lenkurt Incorporated Echo canceller using end delay measurement
US4582963A (en) * 1982-07-29 1986-04-15 Rockwell International Corporation Echo cancelling using adaptive bulk delay and filter
IT1208769B (it) * 1983-10-12 1989-07-10 Cselt Centro Studi Lab Telecom Teristiche varianti nel tempo procedimento e dispositivo per la cancellazione numerica dell eco generato in collegamenti con carat
EP0221221B1 (en) * 1985-10-30 1991-12-27 International Business Machines Corporation A process for determining an echo path flat delay and echo canceler using said process
US4805215A (en) * 1986-10-01 1989-02-14 Racal Data Communications Inc. Adaptive echo canceller with sparse dynamically positioned taps
US4823382A (en) * 1986-10-01 1989-04-18 Racal Data Communications Inc. Echo canceller with dynamically positioned adaptive filter taps
US7164659B2 (en) * 1999-12-09 2007-01-16 Broadcom Corporation Adaptive gain control based on echo canceller performance information

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3732410A (en) * 1969-12-22 1973-05-08 Postmaster Department Res Labo Self adaptive filter and control circuit therefor
US3735055A (en) * 1971-11-05 1973-05-22 Bell Telephone Labor Inc Method for improving the settling time of a transversal filter adaptive echo canceller
US3721777A (en) * 1971-11-26 1973-03-20 Bell Telephone Labor Inc Echo path delay simulator for use with adaptive echo cancellers
GB1434239A (en) * 1972-08-10 1976-05-05 Siemens Ag Echo cancellers

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983001715A1 (en) * 1981-11-02 1983-05-11 Carlqvist, Bengt, Roland An fir-type balance filter incorporated in the transmitter-receiver unit in a telecommunication system
WO1983001716A1 (en) * 1981-11-02 1983-05-11 Carlqvist, Bengt, Roland Method of providing adaptive echo cancellation in transmission of digital information in duplex, and apparatus for performing the method

Also Published As

Publication number Publication date
DK300175A (da) 1976-01-04
FR2277470B1 (cs) 1978-03-24
IT1039551B (it) 1979-12-10
NL7507903A (nl) 1976-01-06
PL104150B1 (pl) 1979-08-31
DE2528810A1 (de) 1976-01-22
GB1519295A (en) 1978-07-26
JPS5130412A (en) 1976-03-15
US4024357A (en) 1977-05-17
IE41263B1 (en) 1979-11-21
LU72814A1 (cs) 1976-04-13
FR2277470A1 (fr) 1976-01-30
SE7507604L (sv) 1976-01-05
BE830261A (cs) 1975-12-16
BR7504210A (pt) 1976-07-06
IE41263L (en) 1976-01-03

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