SE8205840D0 - Ekoeliminator - Google Patents

Ekoeliminator

Info

Publication number
SE8205840D0
SE8205840D0 SE8205840A SE8205840A SE8205840D0 SE 8205840 D0 SE8205840 D0 SE 8205840D0 SE 8205840 A SE8205840 A SE 8205840A SE 8205840 A SE8205840 A SE 8205840A SE 8205840 D0 SE8205840 D0 SE 8205840D0
Authority
SE
Sweden
Prior art keywords
signal
echo
end speech
echo canceller
combiner
Prior art date
Application number
SE8205840A
Other languages
English (en)
Other versions
SE8205840L (sv
Inventor
R P Coulter
Original Assignee
Western Electric Co
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 Western Electric Co filed Critical Western Electric Co
Publication of SE8205840D0 publication Critical patent/SE8205840D0/sv
Publication of SE8205840L publication Critical patent/SE8205840L/sv

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
    • H04B3/237—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 two adaptive filters, e.g. for near end and for end echo cancelling
    • 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
    • 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)
  • Noise Elimination (AREA)
SE8205840A 1981-10-23 1982-10-14 Ekoeliminator SE8205840L (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US31449781A 1981-10-23 1981-10-23

Publications (2)

Publication Number Publication Date
SE8205840D0 true SE8205840D0 (sv) 1982-10-14
SE8205840L SE8205840L (sv) 1983-04-24

Family

ID=23220193

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8205840A SE8205840L (sv) 1981-10-23 1982-10-14 Ekoeliminator

Country Status (8)

Country Link
JP (1) JPS58125920A (sv)
KR (1) KR840002180A (sv)
AU (1) AU8965482A (sv)
DE (1) DE3238549A1 (sv)
FR (1) FR2515452A1 (sv)
GB (1) GB2109209A (sv)
NL (1) NL8204099A (sv)
SE (1) SE8205840L (sv)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6076825A (ja) * 1983-10-03 1985-05-01 Nec Corp 適応型反響消去装置
JPH0624327B2 (ja) * 1985-05-24 1994-03-30 日本電気株式会社 端末装置
JPS6235723A (ja) * 1985-08-08 1987-02-16 Matsushita Electric Ind Co Ltd 反響消去装置
EP0307765A1 (de) * 1987-09-18 1989-03-22 Siemens Aktiengesellschaft Anordnung zum Erkennen periodischer Signale für einen Sprach-Echokompensator
US5471527A (en) 1993-12-02 1995-11-28 Dsc Communications Corporation Voice enhancement system and method
CA2212658C (en) * 1995-02-15 2002-01-22 British Telecommunications Public Limited Company Voice activity detection using echo return loss to adapt the detection threshold
GB2308283A (en) * 1995-12-16 1997-06-18 Ibm System and method for echo cancellation

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1816153B2 (de) * 1968-12-20 1971-04-15 Schaltungsanordnung zur echounterdrueckung in einem sprech kreis auf einem vierdraht uebertragungssystem bei einem uebergang auf einen zweidrahtuebertragungsweg
US3992594A (en) * 1975-10-10 1976-11-16 Bell Telephone Laboratories, Incorporated Echo suppressor break-in circuitry
JPS56153850A (en) * 1980-04-28 1981-11-28 Kokusai Denshin Denwa Co Ltd <Kdd> Echo control system

Also Published As

Publication number Publication date
FR2515452A1 (fr) 1983-04-29
JPS58125920A (ja) 1983-07-27
DE3238549A1 (de) 1983-05-19
KR840002180A (ko) 1984-06-11
AU8965482A (en) 1983-04-28
SE8205840L (sv) 1983-04-24
GB2109209A (en) 1983-05-25
NL8204099A (nl) 1983-05-16

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