JPS5295912A - Echo cancelling device - Google Patents

Echo cancelling device

Info

Publication number
JPS5295912A
JPS5295912A JP1260776A JP1260776A JPS5295912A JP S5295912 A JPS5295912 A JP S5295912A JP 1260776 A JP1260776 A JP 1260776A JP 1260776 A JP1260776 A JP 1260776A JP S5295912 A JPS5295912 A JP S5295912A
Authority
JP
Japan
Prior art keywords
echo cancelling
cancelling device
echo
predicts
eliminated
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.)
Granted
Application number
JP1260776A
Other languages
Japanese (ja)
Other versions
JPS5842663B2 (en
Inventor
Kazuo Ochiai
Taku Arazeki
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP1260776A priority Critical patent/JPS5842663B2/en
Publication of JPS5295912A publication Critical patent/JPS5295912A/en
Publication of JPS5842663B2 publication Critical patent/JPS5842663B2/en
Expired 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
    • 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)

Abstract

PURPOSE:By properly performing the control of operation which predicts the characteristics of echo circuit, echo in long distance line is eliminated.
JP1260776A 1976-02-06 1976-02-06 echo canceller Expired JPS5842663B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1260776A JPS5842663B2 (en) 1976-02-06 1976-02-06 echo canceller

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1260776A JPS5842663B2 (en) 1976-02-06 1976-02-06 echo canceller

Publications (2)

Publication Number Publication Date
JPS5295912A true JPS5295912A (en) 1977-08-12
JPS5842663B2 JPS5842663B2 (en) 1983-09-21

Family

ID=11810031

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1260776A Expired JPS5842663B2 (en) 1976-02-06 1976-02-06 echo canceller

Country Status (1)

Country Link
JP (1) JPS5842663B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2501439A1 (en) * 1981-03-05 1982-09-10 Western Electric Co DISCRIMINATOR OF ENERGY BAND
EP0135843A2 (en) * 1983-09-02 1985-04-03 Nec Corporation Echo canceller systems
EP0182096A2 (en) * 1984-11-19 1986-05-28 International Business Machines Corporation Method and apparatus for improved control and time sharing of an echo canceller

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2501439A1 (en) * 1981-03-05 1982-09-10 Western Electric Co DISCRIMINATOR OF ENERGY BAND
EP0135843A2 (en) * 1983-09-02 1985-04-03 Nec Corporation Echo canceller systems
EP0182096A2 (en) * 1984-11-19 1986-05-28 International Business Machines Corporation Method and apparatus for improved control and time sharing of an echo canceller

Also Published As

Publication number Publication date
JPS5842663B2 (en) 1983-09-21

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