FR2452210A1 - Suppresseur d'echo auto-adaptatif - Google Patents

Suppresseur d'echo auto-adaptatif

Info

Publication number
FR2452210A1
FR2452210A1 FR7907108A FR7907108A FR2452210A1 FR 2452210 A1 FR2452210 A1 FR 2452210A1 FR 7907108 A FR7907108 A FR 7907108A FR 7907108 A FR7907108 A FR 7907108A FR 2452210 A1 FR2452210 A1 FR 2452210A1
Authority
FR
France
Prior art keywords
transmission
reception
dependence
echo suppressor
mean 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.)
Granted
Application number
FR7907108A
Other languages
English (en)
French (fr)
Other versions
FR2452210B1 (https=
Inventor
Jean-Marc Hennet
Dominique Lajotte
Francis Menet
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.)
Nokia Inc
Original Assignee
Nokia Inc
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 Nokia Inc filed Critical Nokia Inc
Priority to FR7907108A priority Critical patent/FR2452210A1/fr
Publication of FR2452210A1 publication Critical patent/FR2452210A1/fr
Application granted granted Critical
Publication of FR2452210B1 publication Critical patent/FR2452210B1/fr
Granted 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
FR7907108A 1979-03-21 1979-03-21 Suppresseur d'echo auto-adaptatif Granted FR2452210A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7907108A FR2452210A1 (fr) 1979-03-21 1979-03-21 Suppresseur d'echo auto-adaptatif

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7907108A FR2452210A1 (fr) 1979-03-21 1979-03-21 Suppresseur d'echo auto-adaptatif

Publications (2)

Publication Number Publication Date
FR2452210A1 true FR2452210A1 (fr) 1980-10-17
FR2452210B1 FR2452210B1 (https=) 1982-02-12

Family

ID=9223386

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7907108A Granted FR2452210A1 (fr) 1979-03-21 1979-03-21 Suppresseur d'echo auto-adaptatif

Country Status (1)

Country Link
FR (1) FR2452210A1 (https=)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3992594A (en) * 1975-10-10 1976-11-16 Bell Telephone Laboratories, Incorporated Echo suppressor break-in circuitry
US4088851A (en) * 1976-04-28 1978-05-09 Wescom, Inc. Digital echo suppressor
FR2408249A1 (fr) * 1977-11-08 1979-06-01 Kokusai Denshin Denwa Co Ltd Suppresseur d'echo de type a commande adaptee

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3992594A (en) * 1975-10-10 1976-11-16 Bell Telephone Laboratories, Incorporated Echo suppressor break-in circuitry
US4088851A (en) * 1976-04-28 1978-05-09 Wescom, Inc. Digital echo suppressor
FR2408249A1 (fr) * 1977-11-08 1979-06-01 Kokusai Denshin Denwa Co Ltd Suppresseur d'echo de type a commande adaptee

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
EXBK/68 *
EXBK/76 *
EXBK/77 *

Also Published As

Publication number Publication date
FR2452210B1 (https=) 1982-02-12

Similar Documents

Publication Publication Date Title
DE3169302D1 (en) Transmitting a voice signal and data on a single channel
GB2068698A (en) Speech detector
MY105780A (en) Digital transmission system, transmitter and receiver for use in the transmission sytstem, and record carrier obtained by means of the treansmitter in the form of a recording device
EP0139405A3 (en) Data transmission system
TW329581B (en) Rob bit compensation system and method associated with a transmitter or codec
CA2189489A1 (en) Method and apparatus for reducing residual far-end echo in voice communication networks
BR9908968A (pt) Processos para estimar a relação portadora-interferência em um sistema de rádio comunicação, para controlar seleção de canal dentro de um sistema de rádio comunicação possuindo pelo menos dois dispositivos de comunicação, e para operar um dispositivo de comunicação possuindo um rádio receptor e um rádio transmissor, e, dispositivo de rádio comunicação
FR2457042A1 (fr) Compensateur d'echo a filtre passe-haut
CA2192402A1 (en) Method and Apparatus for Transport of Communication Signals Over a Public Network
BR9712177A (pt) Processos de cancelamento de eco e de determinar um período afetado pelo silêncio em um procedimento de cancelamento de eco, e cancelador de eco.
JPS6489838A (en) Method of optimizing trafic in digital packet switching metwork
OA07615A (fr) Méthode pour la commande à distance d'appareils d'acquisition de signaux au moyen d'une voie de transmission à bande passante étroite et dispositif pour sa mise en oeuvre.
GB1534252A (en) Submarine pipelines
CA1032478A (en) Digital transmission system for transmitting speech signals at a low bit rate, and transmitter for use in such a system
FR2452210A1 (fr) Suppresseur d'echo auto-adaptatif
EP0391312A3 (en) System for and method of determining cable characteristics
FR2412992A1 (fr) Reseau de communication a entremelement de paroles par affectation temporelle avec retards variables
CA2121002A1 (en) Apparatus and Method for Determining a Point in Time for Detecting a Sampled Signal in a Receiver
GB1510770A (en) Instruments and method for measuring characteristics of only a selected portion of a transmission channel
JPS5324718A (en) Signal transmitter
SU698139A1 (ru) Способ контрол остаточного затухани канала св зи
JPS57143968A (en) Channel test system
SU677129A1 (ru) Способ управлени потоками нагрузки сети св зи
JPS5758447A (en) Relay device
JPS5783961A (en) Voice-data simultaneous transmission system

Legal Events

Date Code Title Description
ST Notification of lapse