JPH0695653B2 - エコー補償装置 - Google Patents

エコー補償装置

Info

Publication number
JPH0695653B2
JPH0695653B2 JP63188560A JP18856088A JPH0695653B2 JP H0695653 B2 JPH0695653 B2 JP H0695653B2 JP 63188560 A JP63188560 A JP 63188560A JP 18856088 A JP18856088 A JP 18856088A JP H0695653 B2 JPH0695653 B2 JP H0695653B2
Authority
JP
Japan
Prior art keywords
echo
input side
step width
transversal filter
signal
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.)
Expired - Lifetime
Application number
JP63188560A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6444636A (en
Inventor
デイルスコ・フアオ・プフアイル
Original Assignee
ジーメンス・アクチエンゲゼルシヤフト
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 ジーメンス・アクチエンゲゼルシヤフト filed Critical ジーメンス・アクチエンゲゼルシヤフト
Publication of JPS6444636A publication Critical patent/JPS6444636A/ja
Publication of JPH0695653B2 publication Critical patent/JPH0695653B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H04B3/234—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 double talk detection
    • 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)
  • Primary Cells (AREA)
  • Bidirectional Digital Transmission (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Radio Relay Systems (AREA)
JP63188560A 1987-07-29 1988-07-29 エコー補償装置 Expired - Lifetime JPH0695653B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3725190 1987-07-29
DE3725190.2 1987-07-29

Publications (2)

Publication Number Publication Date
JPS6444636A JPS6444636A (en) 1989-02-17
JPH0695653B2 true JPH0695653B2 (ja) 1994-11-24

Family

ID=6332662

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63188560A Expired - Lifetime JPH0695653B2 (ja) 1987-07-29 1988-07-29 エコー補償装置

Country Status (8)

Country Link
EP (1) EP0303101B1 (OSRAM)
JP (1) JPH0695653B2 (OSRAM)
AT (1) ATE81239T1 (OSRAM)
AU (1) AU586959B2 (OSRAM)
DE (1) DE3875028D1 (OSRAM)
ES (1) ES2035186T3 (OSRAM)
GR (1) GR3006697T3 (OSRAM)
NO (1) NO175400C (OSRAM)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0300427B1 (en) * 1987-07-20 1992-09-30 Nec Corporation Echo canceller
DE19816358C2 (de) * 1998-04-03 2000-04-27 Deutsche Telekom Ag Verfahren zur Steuerung der Schrittweite eines Echokompensators mit adaptivem Filter
EP1301018A1 (en) * 2001-10-02 2003-04-09 Alcatel Apparatus and method for modifying a digital signal in the coded domain

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3327467A1 (de) * 1983-07-29 1985-02-14 Siemens AG, 1000 Berlin und 8000 München Verfahren und schaltungsanordnung zur kompensation von echosignalen
JPS6053336A (ja) * 1983-09-02 1985-03-27 Nec Corp 反響消去装置
FR2564667B1 (fr) * 1984-05-15 1986-09-19 Trt Telecom Radio Electr Dispositif de commande d'un annuleur d'echo et d'un ecreteur de centre
EP0231854B1 (de) * 1986-01-30 1991-04-03 Siemens Aktiengesellschaft Echokompensator

Also Published As

Publication number Publication date
NO175400B (no) 1994-06-27
EP0303101A1 (de) 1989-02-15
AU586959B2 (en) 1989-07-27
AU2011088A (en) 1989-02-16
DE3875028D1 (de) 1992-11-05
ES2035186T3 (es) 1993-04-16
NO175400C (no) 1994-10-05
JPS6444636A (en) 1989-02-17
NO883355L (no) 1989-01-30
GR3006697T3 (OSRAM) 1993-06-30
EP0303101B1 (de) 1992-09-30
ATE81239T1 (de) 1992-10-15
NO883355D0 (no) 1988-07-28

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