FR2674389B1 - Dispositif d'asservissement de la convergence d'un annuleur d'echo d'un signal numerique de parole. - Google Patents

Dispositif d'asservissement de la convergence d'un annuleur d'echo d'un signal numerique de parole.

Info

Publication number
FR2674389B1
FR2674389B1 FR9103397A FR9103397A FR2674389B1 FR 2674389 B1 FR2674389 B1 FR 2674389B1 FR 9103397 A FR9103397 A FR 9103397A FR 9103397 A FR9103397 A FR 9103397A FR 2674389 B1 FR2674389 B1 FR 2674389B1
Authority
FR
France
Prior art keywords
convergence
serving
echo canceller
speaking signal
digital speaking
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
FR9103397A
Other languages
English (en)
Other versions
FR2674389A1 (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.)
Orange SA
Prescom
Original Assignee
France Telecom SA
Prescom
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 France Telecom SA, Prescom filed Critical France Telecom SA
Priority to FR9103397A priority Critical patent/FR2674389B1/fr
Priority to PCT/FR1992/000244 priority patent/WO1992017004A1/fr
Publication of FR2674389A1 publication Critical patent/FR2674389A1/fr
Application granted granted Critical
Publication of FR2674389B1 publication Critical patent/FR2674389B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
FR9103397A 1991-03-20 1991-03-20 Dispositif d'asservissement de la convergence d'un annuleur d'echo d'un signal numerique de parole. Expired - Fee Related FR2674389B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR9103397A FR2674389B1 (fr) 1991-03-20 1991-03-20 Dispositif d'asservissement de la convergence d'un annuleur d'echo d'un signal numerique de parole.
PCT/FR1992/000244 WO1992017004A1 (fr) 1991-03-20 1992-03-18 Dispositif d'asservissement de la convergence d'un annuleur d'echo d'un signal numerique de parole

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9103397A FR2674389B1 (fr) 1991-03-20 1991-03-20 Dispositif d'asservissement de la convergence d'un annuleur d'echo d'un signal numerique de parole.

Publications (2)

Publication Number Publication Date
FR2674389A1 FR2674389A1 (fr) 1992-09-25
FR2674389B1 true FR2674389B1 (fr) 1993-07-23

Family

ID=9410946

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9103397A Expired - Fee Related FR2674389B1 (fr) 1991-03-20 1991-03-20 Dispositif d'asservissement de la convergence d'un annuleur d'echo d'un signal numerique de parole.

Country Status (2)

Country Link
FR (1) FR2674389B1 (fr)
WO (1) WO1992017004A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69330902T2 (de) * 1992-11-25 2002-06-20 Koninkl Philips Electronics Nv Echokompensator, Nachrichtenübertragungssystem und Station mit solch einem Echokompensator
DE4317043B4 (de) * 1993-05-21 2004-03-25 Deutsche Telekom Ag Verfahren und Vorrichtung zur Echokompensation in Übertragungssystemen
DE19647276A1 (de) * 1996-11-15 1998-05-20 Alsthom Cge Alcatel Verfahren und Anordnung zur adaptiven Echokompensation
DE19825196A1 (de) * 1998-06-05 1999-12-09 Alcatel Sa Verfahren zur Kopplungsbestimmung zwischen zwei Telekommunikations(=TK)-Wegen
JP5932337B2 (ja) 2008-12-22 2016-06-08 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． 遠隔端通話者信号と複合信号との間の音響カップリングの特定

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4467441A (en) * 1982-10-08 1984-08-21 At&T Bell Laboratories Adaptive filter including controlled tap coefficient leakage
US4918727A (en) * 1988-06-09 1990-04-17 Tellabs Incorporated Double talk detector for echo canceller and method
DE3840433A1 (de) * 1988-12-01 1990-06-07 Philips Patentverwaltung Echokompensator

Also Published As

Publication number Publication date
FR2674389A1 (fr) 1992-09-25
WO1992017004A1 (fr) 1992-10-01

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Legal Events

Date Code Title Description
ST Notification of lapse