JPS5225516A - Echo eraser unit - Google Patents

Echo eraser unit

Info

Publication number
JPS5225516A
JPS5225516A JP10111075A JP10111075A JPS5225516A JP S5225516 A JPS5225516 A JP S5225516A JP 10111075 A JP10111075 A JP 10111075A JP 10111075 A JP10111075 A JP 10111075A JP S5225516 A JPS5225516 A JP S5225516A
Authority
JP
Japan
Prior art keywords
echo
eraser unit
echo eraser
unit
long delay
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.)
Pending
Application number
JP10111075A
Other languages
Japanese (ja)
Inventor
Junzo Tamura
Akira Sato
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 JP10111075A priority Critical patent/JPS5225516A/en
Publication of JPS5225516A publication Critical patent/JPS5225516A/en
Pending 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:In convolution integrating of a long delay call line, to improve residual echo signal focusing by taking receiving signal time length to be an echo path inpulse response durable time.
JP10111075A 1975-08-22 1975-08-22 Echo eraser unit Pending JPS5225516A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10111075A JPS5225516A (en) 1975-08-22 1975-08-22 Echo eraser unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10111075A JPS5225516A (en) 1975-08-22 1975-08-22 Echo eraser unit

Publications (1)

Publication Number Publication Date
JPS5225516A true JPS5225516A (en) 1977-02-25

Family

ID=14291921

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10111075A Pending JPS5225516A (en) 1975-08-22 1975-08-22 Echo eraser unit

Country Status (1)

Country Link
JP (1) JPS5225516A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5513843A (en) * 1978-07-14 1980-01-31 Sato Takeshi Nuclear reactor containment vessel
JPS60107928A (en) * 1983-11-16 1985-06-13 Fujitsu Ltd Echo canceler
JPS60167530A (en) * 1983-10-12 1985-08-30 クセルト　セントロ・ステユデイ・エ・ラボラトリ・テレコミニカチオ−ニ・エツセ・ピ−・ア− Method and device for digitally removing echo generated during connection with time varying characteristic

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5513843A (en) * 1978-07-14 1980-01-31 Sato Takeshi Nuclear reactor containment vessel
JPS60167530A (en) * 1983-10-12 1985-08-30 クセルト　セントロ・ステユデイ・エ・ラボラトリ・テレコミニカチオ−ニ・エツセ・ピ−・ア− Method and device for digitally removing echo generated during connection with time varying characteristic
JPS60107928A (en) * 1983-11-16 1985-06-13 Fujitsu Ltd Echo canceler

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