ES2113440T3 - Metodo para impedir la divergencia de un cancelador de eco adaptivo en un ambiente de señal con ruido. - Google Patents

Metodo para impedir la divergencia de un cancelador de eco adaptivo en un ambiente de señal con ruido.

Info

Publication number
ES2113440T3
ES2113440T3 ES92922704T ES92922704T ES2113440T3 ES 2113440 T3 ES2113440 T3 ES 2113440T3 ES 92922704 T ES92922704 T ES 92922704T ES 92922704 T ES92922704 T ES 92922704T ES 2113440 T3 ES2113440 T3 ES 2113440T3
Authority
ES
Spain
Prior art keywords
eco
noise
divergence
canceler
prevent
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 - Lifetime
Application number
ES92922704T
Other languages
English (en)
Inventor
Heimo Lahdemaki
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 Oyj
Original Assignee
Nokia Telecommunications Oy
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 Telecommunications Oy filed Critical Nokia Telecommunications Oy
Application granted granted Critical
Publication of ES2113440T3 publication Critical patent/ES2113440T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Exhaust Silencers (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

EL INVENTO SE REFIERE A UN METODO PARA PREVENIR LA DIVERGENCIA EN UN COMPENSADOR DE ECOS AUTOADAPTIVO, EN UN ENTORNO DE RUIDO. EL METODO TIENE LOS PASOS DE : DETERMINAR UN NIVEL MEDIO DE RUIDO (-45 DBMO) EN EL RECORRIDO DEL ECO, DETERMINAR UNA ATENUACION (AE) DEL RECORRIDO DEL ECO Y PREVENIR UNA ADAPTACION DEL COMPENSADOR DE ECOS, SI EL NIVEL DE SEÑAL (X(I)) A TRANSMITIR AL RECORRIDO DEL ECO Y QUE CAUSA UN ECO (R(I)) ATENUADO A UN PREDETERMINADO NIVEL DE UMBRAL, ESTA EN EL DOMINIO DE UN MARGEN PRESELECCIONADO DE UNA ATENUACION DEL ECO, POR ENCIMA DEL NIVEL DE RUIDO MEDIO.
ES92922704T 1991-11-04 1992-10-28 Metodo para impedir la divergencia de un cancelador de eco adaptivo en un ambiente de señal con ruido. Expired - Lifetime ES2113440T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI915198A FI97657C (fi) 1991-11-04 1991-11-04 Menetelmä adaptiivisen kaiunpoistajan divergoinnin estämiseksi kohinaisessa signaaliympäristössä

Publications (1)

Publication Number Publication Date
ES2113440T3 true ES2113440T3 (es) 1998-05-01

Family

ID=8533424

Family Applications (1)

Application Number Title Priority Date Filing Date
ES92922704T Expired - Lifetime ES2113440T3 (es) 1991-11-04 1992-10-28 Metodo para impedir la divergencia de un cancelador de eco adaptivo en un ambiente de señal con ruido.

Country Status (10)

Country Link
EP (1) EP0565686B1 (es)
JP (1) JPH06503456A (es)
AT (1) ATE164035T1 (es)
AU (1) AU657372B2 (es)
DE (1) DE69224735T2 (es)
DK (1) DK0565686T3 (es)
ES (1) ES2113440T3 (es)
FI (1) FI97657C (es)
NO (1) NO304865B1 (es)
WO (1) WO1993009608A1 (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08500757A (ja) * 1992-12-30 1996-01-30 シュナイダー・（ユーエスエイ）・インコーポレーテッド 身体に移植可能なステントを展開する装置
SE505152C2 (sv) * 1995-10-11 1997-07-07 Ericsson Telefon Ab L M Adaptivt ekosläckningsförfarande

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6053336A (ja) * 1983-09-02 1985-03-27 Nec Corp 反響消去装置
US4645883A (en) * 1984-05-09 1987-02-24 Communications Satellite Corporation Double talk and line noise detector for a echo canceller
US4712235A (en) * 1984-11-19 1987-12-08 International Business Machines Corporation Method and apparatus for improved control and time sharing of an echo canceller

Also Published As

Publication number Publication date
ATE164035T1 (de) 1998-03-15
FI97657B (fi) 1996-10-15
AU2890392A (en) 1993-06-07
FI97657C (fi) 1997-01-27
NO932188L (no) 1993-09-01
DE69224735T2 (de) 1998-10-01
DE69224735D1 (de) 1998-04-16
JPH06503456A (ja) 1994-04-14
EP0565686B1 (en) 1998-03-11
FI915198A0 (fi) 1991-11-04
NO932188D0 (no) 1993-06-14
DK0565686T3 (da) 1998-05-11
NO304865B1 (no) 1999-02-22
EP0565686A1 (en) 1993-10-20
FI915198L (fi) 1993-05-05
AU657372B2 (en) 1995-03-09
WO1993009608A1 (en) 1993-05-13

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