JPS60127824A - エコ−除去方法及び装置 - Google Patents

エコ−除去方法及び装置

Info

Publication number
JPS60127824A
JPS60127824A JP23673483A JP23673483A JPS60127824A JP S60127824 A JPS60127824 A JP S60127824A JP 23673483 A JP23673483 A JP 23673483A JP 23673483 A JP23673483 A JP 23673483A JP S60127824 A JPS60127824 A JP S60127824A
Authority
JP
Japan
Prior art keywords
echo
polarity
signal
circuit
tap coefficient
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
JP23673483A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0473649B2 (enrdf_load_stackoverflow
Inventor
Akira Kanemasa
金政　晃
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 JP23673483A priority Critical patent/JPS60127824A/ja
Priority to US06/679,825 priority patent/US4707824A/en
Priority to DE8484115339T priority patent/DE3478176D1/de
Priority to EP84115339A priority patent/EP0145022B1/en
Priority to CA000470142A priority patent/CA1225130A/en
Publication of JPS60127824A publication Critical patent/JPS60127824A/ja
Publication of JPH0473649B2 publication Critical patent/JPH0473649B2/ja
Granted 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
    • 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)
JP23673483A 1983-12-15 1983-12-15 エコ−除去方法及び装置 Granted JPS60127824A (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP23673483A JPS60127824A (ja) 1983-12-15 1983-12-15 エコ−除去方法及び装置
US06/679,825 US4707824A (en) 1983-12-15 1984-12-10 Method and apparatus for cancelling echo
DE8484115339T DE3478176D1 (en) 1983-12-15 1984-12-13 Method and apparatus for cancelling echo
EP84115339A EP0145022B1 (en) 1983-12-15 1984-12-13 Method and apparatus for cancelling echo
CA000470142A CA1225130A (en) 1983-12-15 1984-12-14 Method and apparatus for cancelling echo

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23673483A JPS60127824A (ja) 1983-12-15 1983-12-15 エコ−除去方法及び装置

Publications (2)

Publication Number Publication Date
JPS60127824A true JPS60127824A (ja) 1985-07-08
JPH0473649B2 JPH0473649B2 (enrdf_load_stackoverflow) 1992-11-24

Family

ID=17004992

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23673483A Granted JPS60127824A (ja) 1983-12-15 1983-12-15 エコ−除去方法及び装置

Country Status (1)

Country Link
JP (1) JPS60127824A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
JPH0473649B2 (enrdf_load_stackoverflow) 1992-11-24

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