BE893274A - Compensateur d'echo reglable - Google Patents

Compensateur d'echo reglable

Info

Publication number
BE893274A
BE893274A BE2/59718A BE2059718A BE893274A BE 893274 A BE893274 A BE 893274A BE 2/59718 A BE2/59718 A BE 2/59718A BE 2059718 A BE2059718 A BE 2059718A BE 893274 A BE893274 A BE 893274A
Authority
BE
Belgium
Prior art keywords
echo compensator
adjustable echo
adjustable
compensator
echo
Prior art date
Application number
BE2/59718A
Other languages
English (en)
Inventor
S Hentschke
P Wildenauer
Original Assignee
Int Standard Electric Corp
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 Int Standard Electric Corp filed Critical Int Standard Electric Corp
Publication of BE893274A publication Critical patent/BE893274A/fr
Priority to BE2/60043A priority Critical patent/BE896089R/fr

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
    • H04B3/237—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 using two adaptive filters, e.g. for near end and for end echo cancelling
    • 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
    • H04B3/238—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 using initial training sequence

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)
  • Bidirectional Digital Transmission (AREA)
BE2/59718A 1981-05-22 1982-05-24 Compensateur d'echo reglable BE893274A (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BE2/60043A BE896089R (fr) 1982-03-06 1983-03-07 Compensateur d'echo reglable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813120434 DE3120434A1 (de) 1981-05-22 1981-05-22 Adaptive echokompensationseinrichtung zur digitalen duplexuebertragung auf zweidrahtleitungen

Publications (1)

Publication Number Publication Date
BE893274A true BE893274A (fr) 1982-11-24

Family

ID=6133005

Family Applications (1)

Application Number Title Priority Date Filing Date
BE2/59718A BE893274A (fr) 1981-05-22 1982-05-24 Compensateur d'echo reglable

Country Status (6)

Country Link
AU (1) AU549938B2 (fr)
BE (1) BE893274A (fr)
CH (1) CH657241A5 (fr)
DE (1) DE3120434A1 (fr)
GB (1) GB2102255B (fr)
SE (1) SE447619B (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2540314A1 (fr) * 1983-01-31 1984-08-03 Trt Telecom Radio Electr Procede d'initialisation des coefficients de filtres dans un dispositif d'annulation d'echos proche et lointain et dispositif de mise en oeuvre de ce procede
JPS59151546A (ja) * 1983-02-18 1984-08-30 Nec Corp 適応形反響消去装置
US4598396A (en) * 1984-04-03 1986-07-01 Itt Corporation Duplex transmission mechanism for digital telephones
SE461308B (sv) * 1988-06-03 1990-01-29 Ericsson Telefon Ab L M Adaptivt digitalt filter omfattande en icke rekursiv del och en rekursiv del
AU614447B2 (en) * 1988-12-01 1991-08-29 Nec Corporation Echo canceller with means for determining filter coefficients from autocorrelation and cross-correlation coefficients
GB2362063A (en) * 2000-04-25 2001-11-07 Mitel Corp Connecting broadband voice and data signals to telephone systems

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4087654A (en) * 1975-11-28 1978-05-02 Bell Telephone Laboratories, Incorporated Echo canceller for two-wire full duplex data transmission
SE416367B (sv) * 1976-09-07 1980-12-15 Western Electric Co Ekoelimineringsanordning

Also Published As

Publication number Publication date
DE3120434A1 (de) 1982-12-16
AU8381682A (en) 1982-11-25
SE8203102L (sv) 1982-11-23
SE447619B (sv) 1986-11-24
CH657241A5 (de) 1986-08-15
GB2102255B (en) 1985-01-09
GB2102255A (en) 1983-01-26
AU549938B2 (en) 1986-02-20

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Legal Events

Date Code Title Description
RE Patent lapsed

Owner name: ALCATEL N.V.

Effective date: 19990531