FR2515453A1 - Annuleur de brouillage - Google Patents

Annuleur de brouillage Download PDF

Info

Publication number
FR2515453A1
FR2515453A1 FR8217372A FR8217372A FR2515453A1 FR 2515453 A1 FR2515453 A1 FR 2515453A1 FR 8217372 A FR8217372 A FR 8217372A FR 8217372 A FR8217372 A FR 8217372A FR 2515453 A1 FR2515453 A1 FR 2515453A1
Authority
FR
France
Prior art keywords
signal
reproduction
scrambling
echo
interference
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
FR8217372A
Other languages
English (en)
French (fr)
Inventor
Dietrich Anselm Alsberg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Publication of FR2515453A1 publication Critical patent/FR2515453A1/fr
Withdrawn legal-status Critical Current

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
    • 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)
  • Radio Relay Systems (AREA)
FR8217372A 1981-10-23 1982-10-18 Annuleur de brouillage Withdrawn FR2515453A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US31435381A 1981-10-23 1981-10-23

Publications (1)

Publication Number Publication Date
FR2515453A1 true FR2515453A1 (fr) 1983-04-29

Family

ID=23219622

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8217372A Withdrawn FR2515453A1 (fr) 1981-10-23 1982-10-18 Annuleur de brouillage

Country Status (8)

Country Link
JP (1) JPS5881345A (sv)
KR (1) KR840002178A (sv)
AU (1) AU8965582A (sv)
DE (1) DE3238550A1 (sv)
FR (1) FR2515453A1 (sv)
GB (1) GB2109208A (sv)
NL (1) NL8204100A (sv)
SE (1) SE8205841L (sv)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0117626A2 (en) * 1983-02-04 1984-09-05 Western Electric Company, Incorporated Improvements in or relating to adaptive filter arrangements

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1186764A (en) * 1982-06-23 1985-05-07 Akira Kanemasa Echo canceler
GB8423017D0 (en) * 1984-09-12 1984-10-17 Plessey Co Plc Echo canceller
CA1238381A (en) * 1985-03-14 1988-06-21 Ephraim Arnon Multi-stage echo canceller
US4868874A (en) * 1986-04-18 1989-09-19 Hitachi, Ltd. Echo canceller
US5471527A (en) 1993-12-02 1995-11-28 Dsc Communications Corporation Voice enhancement system and method
KR100586586B1 (ko) * 1999-12-18 2006-06-02 주식회사 케이티 간섭제거 가중치 가변방법

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3754105A (en) * 1968-12-20 1973-08-21 W Poschenrieder Circuit arrangement for echo suppression in a voice circuit on a four-wire transmission system upon transfer to a two-wire transmission line
US4057696A (en) * 1976-08-09 1977-11-08 Bell Telephone Laboratories, Incorporated Recursive-like adaptive echo canceller
EP0053202B1 (en) * 1980-12-06 1985-03-27 Communications Satellite Corporation Improved double talk detector for echo cancellers

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3754105A (en) * 1968-12-20 1973-08-21 W Poschenrieder Circuit arrangement for echo suppression in a voice circuit on a four-wire transmission system upon transfer to a two-wire transmission line
US4057696A (en) * 1976-08-09 1977-11-08 Bell Telephone Laboratories, Incorporated Recursive-like adaptive echo canceller
EP0053202B1 (en) * 1980-12-06 1985-03-27 Communications Satellite Corporation Improved double talk detector for echo cancellers

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, Conference Record, vol. 3 de 3, Philadelphia, Pa, 13-17 juin 1982, New York (US) *
PATENTS ABSTRACTS OF JAPAN, vol. 4, no. 181 (E-37) [663], 13 décembre 1980 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0117626A2 (en) * 1983-02-04 1984-09-05 Western Electric Company, Incorporated Improvements in or relating to adaptive filter arrangements
EP0117626A3 (en) * 1983-02-04 1985-12-18 Western Electric Company, Incorporated Improvements in or relating to adaptive filter arrangements

Also Published As

Publication number Publication date
JPS5881345A (ja) 1983-05-16
DE3238550A1 (de) 1983-06-30
NL8204100A (nl) 1983-05-16
KR840002178A (ko) 1984-06-11
SE8205841L (sv) 1983-04-24
GB2109208A (en) 1983-05-25
SE8205841D0 (sv) 1982-10-14
AU8965582A (en) 1983-04-28

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Legal Events

Date Code Title Description
ST Notification of lapse