FR2675648B1 - Dispositif de traitement de l'echo residuel d'un annuleur du signal d'echo d'un signal numerique de parole. - Google Patents

Dispositif de traitement de l'echo residuel d'un annuleur du signal d'echo d'un signal numerique de parole.

Info

Publication number
FR2675648B1
FR2675648B1 FR9104863A FR9104863A FR2675648B1 FR 2675648 B1 FR2675648 B1 FR 2675648B1 FR 9104863 A FR9104863 A FR 9104863A FR 9104863 A FR9104863 A FR 9104863A FR 2675648 B1 FR2675648 B1 FR 2675648B1
Authority
FR
France
Prior art keywords
signal
echo
cancer
processing
residual
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 - Fee Related
Application number
FR9104863A
Other languages
English (en)
Other versions
FR2675648A1 (fr
Inventor
Zurcher Frederic
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.)
PRESCOM SARL
Orange SA
Original Assignee
PRESCOM SARL
France Telecom SA
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 PRESCOM SARL, France Telecom SA filed Critical PRESCOM SARL
Priority to FR9104863A priority Critical patent/FR2675648B1/fr
Priority to PCT/FR1992/000347 priority patent/WO1992019048A1/fr
Publication of FR2675648A1 publication Critical patent/FR2675648A1/fr
Application granted granted Critical
Publication of FR2675648B1 publication Critical patent/FR2675648B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H04M9/082—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic using echo cancellers
    • 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)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
FR9104863A 1991-04-19 1991-04-19 Dispositif de traitement de l'echo residuel d'un annuleur du signal d'echo d'un signal numerique de parole. Expired - Fee Related FR2675648B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR9104863A FR2675648B1 (fr) 1991-04-19 1991-04-19 Dispositif de traitement de l'echo residuel d'un annuleur du signal d'echo d'un signal numerique de parole.
PCT/FR1992/000347 WO1992019048A1 (fr) 1991-04-19 1992-04-17 Dispositif de traitement de l'echo residuel d'un annuleur du signal d'echo d'un signal numerique de parole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9104863A FR2675648B1 (fr) 1991-04-19 1991-04-19 Dispositif de traitement de l'echo residuel d'un annuleur du signal d'echo d'un signal numerique de parole.

Publications (2)

Publication Number Publication Date
FR2675648A1 FR2675648A1 (fr) 1992-10-23
FR2675648B1 true FR2675648B1 (fr) 1993-08-20

Family

ID=9412063

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9104863A Expired - Fee Related FR2675648B1 (fr) 1991-04-19 1991-04-19 Dispositif de traitement de l'echo residuel d'un annuleur du signal d'echo d'un signal numerique de parole.

Country Status (2)

Country Link
FR (1) FR2675648B1 (fr)
WO (1) WO1992019048A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4317043B4 (de) * 1993-05-21 2004-03-25 Deutsche Telekom Ag Verfahren und Vorrichtung zur Echokompensation in Übertragungssystemen
US5475731A (en) * 1994-01-07 1995-12-12 Ericsson Inc. Echo-canceling system and method using echo estimate to modify error signal
JPH0832494A (ja) * 1994-07-13 1996-02-02 Mitsubishi Electric Corp ハンズフリー通話装置
JP2928130B2 (ja) * 1995-04-19 1999-08-03 埼玉日本電気株式会社 ハンズフリー通信装置
FR2748174B1 (fr) * 1996-04-30 1998-06-26 Sagem Poste telephonique mains-libres
US5796819A (en) * 1996-07-24 1998-08-18 Ericsson Inc. Echo canceller for non-linear circuits
DE19935808A1 (de) 1999-07-29 2001-02-08 Ericsson Telefon Ab L M Echounterdrückungseinrichtung zum Unterdrücken von Echos in einer Sender/Empfänger-Einheit

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1242541A (fr) * 1985-11-25 1988-09-27 Dany Sylvain Elimination des echos dans les repeteurs pour voies de transmission bifilaires
JPS62182357A (ja) * 1986-02-04 1987-08-10 有限会社アリサワ 建造物における外壁の施工方法
FR2651077B1 (fr) * 1989-08-18 1994-06-10 Letourneur Gregoire Dispositif de traitement d'echo notamment acoustique dans une ligne telephonique

Also Published As

Publication number Publication date
WO1992019048A1 (fr) 1992-10-29
FR2675648A1 (fr) 1992-10-23

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Legal Events

Date Code Title Description
ST Notification of lapse