JPS57212831A - Echo controlling system - Google Patents

Echo controlling system

Info

Publication number
JPS57212831A
JPS57212831A JP9773481A JP9773481A JPS57212831A JP S57212831 A JPS57212831 A JP S57212831A JP 9773481 A JP9773481 A JP 9773481A JP 9773481 A JP9773481 A JP 9773481A JP S57212831 A JPS57212831 A JP S57212831A
Authority
JP
Japan
Prior art keywords
echo
signal
reception
subtractor
adder
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
JP9773481A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6255739B2 (enrdf_load_stackoverflow
Inventor
Seiichi Yamamoto
Seiji Kiyama
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.)
KDDI Corp
Original Assignee
Kokusai Denshin Denwa KK
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 Kokusai Denshin Denwa KK filed Critical Kokusai Denshin Denwa KK
Priority to JP9773481A priority Critical patent/JPS57212831A/ja
Publication of JPS57212831A publication Critical patent/JPS57212831A/ja
Publication of JPS6255739B2 publication Critical patent/JPS6255739B2/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
JP9773481A 1981-06-24 1981-06-24 Echo controlling system Granted JPS57212831A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9773481A JPS57212831A (en) 1981-06-24 1981-06-24 Echo controlling system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9773481A JPS57212831A (en) 1981-06-24 1981-06-24 Echo controlling system

Publications (2)

Publication Number Publication Date
JPS57212831A true JPS57212831A (en) 1982-12-27
JPS6255739B2 JPS6255739B2 (enrdf_load_stackoverflow) 1987-11-20

Family

ID=14200117

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9773481A Granted JPS57212831A (en) 1981-06-24 1981-06-24 Echo controlling system

Country Status (1)

Country Link
JP (1) JPS57212831A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6135630A (ja) * 1984-07-27 1986-02-20 Matsushita Electric Ind Co Ltd エコ−キヤンセラ
US6999920B1 (en) * 1999-11-27 2006-02-14 Alcatel Exponential echo and noise reduction in silence intervals

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6135630A (ja) * 1984-07-27 1986-02-20 Matsushita Electric Ind Co Ltd エコ−キヤンセラ
US6999920B1 (en) * 1999-11-27 2006-02-14 Alcatel Exponential echo and noise reduction in silence intervals

Also Published As

Publication number Publication date
JPS6255739B2 (enrdf_load_stackoverflow) 1987-11-20

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