ATE87779T1 - Verfahren und anordnung zur adaptiven digitalen loeschung des im fernsprechverbindungen mit zeitvarianten eigenschaften erzeugten echos. - Google Patents

Verfahren und anordnung zur adaptiven digitalen loeschung des im fernsprechverbindungen mit zeitvarianten eigenschaften erzeugten echos.

Info

Publication number
ATE87779T1
ATE87779T1 AT89203107T AT89203107T ATE87779T1 AT E87779 T1 ATE87779 T1 AT E87779T1 AT 89203107 T AT89203107 T AT 89203107T AT 89203107 T AT89203107 T AT 89203107T AT E87779 T1 ATE87779 T1 AT E87779T1
Authority
AT
Austria
Prior art keywords
echo
telephone connections
arrangement
time
variant characteristics
Prior art date
Application number
AT89203107T
Other languages
English (en)
Inventor
Giacomo Cannalire
Giacomo Premoli
Roberto Ravasio
Original Assignee
Sits Soc It Telecom Siemens
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 Sits Soc It Telecom Siemens filed Critical Sits Soc It Telecom Siemens
Application granted granted Critical
Publication of ATE87779T1 publication Critical patent/ATE87779T1/de

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Telephone Function (AREA)
AT89203107T 1988-12-21 1989-12-07 Verfahren und anordnung zur adaptiven digitalen loeschung des im fernsprechverbindungen mit zeitvarianten eigenschaften erzeugten echos. ATE87779T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8823032A IT1228106B (it) 1988-12-21 1988-12-21 Procedimento e dispositivo per la cancellazione numerica adattativa dell'eco generato in collegamenti telefonici con caratteristiche varianti nel tempo
EP89203107A EP0375015B1 (de) 1988-12-21 1989-12-07 Verfahren und Anordnung zur adaptiven digitalen Löschung des im Fernsprechverbindungen mit zeitvarianten Eigenschaften erzeugten Echos

Publications (1)

Publication Number Publication Date
ATE87779T1 true ATE87779T1 (de) 1993-04-15

Family

ID=11203092

Family Applications (1)

Application Number Title Priority Date Filing Date
AT89203107T ATE87779T1 (de) 1988-12-21 1989-12-07 Verfahren und anordnung zur adaptiven digitalen loeschung des im fernsprechverbindungen mit zeitvarianten eigenschaften erzeugten echos.

Country Status (5)

Country Link
EP (1) EP0375015B1 (de)
AT (1) ATE87779T1 (de)
DE (1) DE68905782T2 (de)
ES (1) ES2041980T3 (de)
IT (1) IT1228106B (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2038887B1 (es) * 1991-04-18 1995-05-01 Aplicaciones Electronicas Quas Hibrida digital para multiconferencia.
ES2038904B1 (es) * 1991-09-10 1995-01-16 Alcatel Standard Electrica Procedimiento y dispositivo de cancelacion adaptativa de ecos acusticos.
IT1254819B (it) * 1992-02-24 1995-10-11 Sits Soc It Telecom Siemens Procedimento e dispositivo per la cancellazione numerica adattativa dell'eco generato in collegamenti telefonici non stazionari
FI935834L (fi) * 1993-12-23 1995-06-24 Nokia Telecommunications Oy Menetelmä kaikukohtaan sovittautumiseksi kaiunpoistajassa
US5535194A (en) * 1994-07-14 1996-07-09 Motorola, Inc. Method and apparatus for echo canceling with double-talk immunity
SE516835C2 (sv) * 1995-02-15 2002-03-12 Ericsson Telefon Ab L M Ekosläckningsförfarande

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1208769B (it) * 1983-10-12 1989-07-10 Cselt Centro Studi Lab Telecom Teristiche varianti nel tempo procedimento e dispositivo per la cancellazione numerica dell eco generato in collegamenti con carat

Also Published As

Publication number Publication date
IT1228106B (it) 1991-05-28
DE68905782T2 (de) 1993-08-26
EP0375015A3 (de) 1992-04-01
ES2041980T3 (es) 1993-12-01
DE68905782D1 (de) 1993-05-06
IT8823032A0 (it) 1988-12-21
EP0375015A2 (de) 1990-06-27
EP0375015B1 (de) 1993-03-31

Similar Documents

Publication Publication Date Title
ATE152557T1 (de) Verfahren und anordnung zur adaptiven digitalen löschung des in fernsprechverbindungen mit zeitvarianten eigenschaften erzeugten echos
KR0136565B1 (ko) 디지털 가상 접지 능동 상쇄 시스템
KR100233077B1 (ko) 반향소거장치
EP0174749A1 (de) Echoauslöscheinrichtung
EP0730262A3 (de) Vorrichtung zur Rauschunterdrückung mit verringerter Konvergenzzeit und verringertem Restfehler nach Konvergenz
KR19990035995A (ko) 입력 신호의 간섭 성분을 억제하기 위한 장치
CA2088558A1 (en) Multi-channel echo cancellation with adaptive filters having selectable coefficient vectors
JP4457639B2 (ja) エコーキャンセラ
CA2231605A1 (en) An enhanced echo canceller for digital cellular application
ATE87779T1 (de) Verfahren und anordnung zur adaptiven digitalen loeschung des im fernsprechverbindungen mit zeitvarianten eigenschaften erzeugten echos.
EP0732838A2 (de) Akustischer Echokompensator
KR100415525B1 (ko) 에코제거장치
KR20110102474A (ko) 원단 토커 신호와 조합된 신호 간의 음향 결합의 결정
EP0843455A3 (de) Verfahren und Anordnung zur adaptiven Echokompensation
ATE54520T1 (de) Verfahren und einrichtung zur einstellung eines digitalen entzerrungsfilters bei gleichzeitiger adaptiver echoloeschung und adaptiven intersymbolinterferenzstoerungsbeseitigung.
US20020064286A1 (en) Echo canceller
US6947395B1 (en) Locating network echos
JPH0541681A (ja) エコーキヤンセラ
CA2514434C (en) Method of adaptation step control in echo cancellers
GB2356328B (en) Echo suppression and echo cancellation
DE69223565D1 (de) Verfahren und Vorrichtung zur adaptiven akustischen Echokompensation
JPH0897752A (ja) 音響反響除去装置
KR19990002334A (ko) 음향 반향 제거장치
HUANG et al. Adaptive crosstalk cancellation based on recursive prediction error method
KR20040031401A (ko) 통신시스템에서의 잔향 제거 장치 및 방법

Legal Events

Date Code Title Description
UEP Publication of translation of european patent specification
REN Ceased due to non-payment of the annual fee