SE441052B - Forfarande for att testa funktionen hos en anordning for adaptiv ekoeliminering - Google Patents

Forfarande for att testa funktionen hos en anordning for adaptiv ekoeliminering

Info

Publication number
SE441052B
SE441052B SE8400502A SE8400502A SE441052B SE 441052 B SE441052 B SE 441052B SE 8400502 A SE8400502 A SE 8400502A SE 8400502 A SE8400502 A SE 8400502A SE 441052 B SE441052 B SE 441052B
Authority
SE
Sweden
Prior art keywords
signal
compensated
pct
wire
threshold value
Prior art date
Application number
SE8400502A
Other languages
English (en)
Swedish (sv)
Other versions
SE8400502L (es
SE8400502D0 (sv
Inventor
I Dahlqvist
Original Assignee
Ellemtel Utvecklings Ab
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
Publication of SE8400502D0 publication Critical patent/SE8400502D0/xx
Priority to SE8400502A priority Critical patent/SE441052B/sv
Application filed by Ellemtel Utvecklings Ab filed Critical Ellemtel Utvecklings Ab
Priority to DE8585900507T priority patent/DE3479950D1/de
Priority to KR1019850700235A priority patent/KR850700294A/ko
Priority to KR1019850700235D priority patent/KR890004594B1/ko
Priority to EP85900507A priority patent/EP0199727B1/en
Priority to US06/787,803 priority patent/US4727566A/en
Priority to BR8407338A priority patent/BR8407338A/pt
Priority to PCT/SE1984/000435 priority patent/WO1985003607A1/en
Priority to JP60500365A priority patent/JPH06101694B2/ja
Priority to AU38333/85A priority patent/AU572607B2/en
Priority to NZ210795A priority patent/NZ210795A/xx
Priority to GR850142A priority patent/GR850142B/el
Priority to EG33/85A priority patent/EG16599A/xx
Priority to ES539839A priority patent/ES8606756A1/es
Priority to IT19229/85A priority patent/IT1183302B/it
Priority to CA000472965A priority patent/CA1250633A/en
Priority to MX204210A priority patent/MX157106A/es
Priority to DD85272909A priority patent/DD229260A5/de
Priority to PT79914A priority patent/PT79914B/pt
Priority to MA20567A priority patent/MA20343A1/fr
Publication of SE8400502L publication Critical patent/SE8400502L/xx
Publication of SE441052B publication Critical patent/SE441052B/sv
Priority to NO853668A priority patent/NO853668L/no
Priority to DK443085A priority patent/DK443085A/da
Priority to FI860812A priority patent/FI860812A/fi

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)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Road Paving Structures (AREA)
  • Liquid Developers In Electrophotography (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
SE8400502A 1984-02-01 1984-02-01 Forfarande for att testa funktionen hos en anordning for adaptiv ekoeliminering SE441052B (sv)

Priority Applications (23)

Application Number Priority Date Filing Date Title
SE8400502A SE441052B (sv) 1984-02-01 1984-02-01 Forfarande for att testa funktionen hos en anordning for adaptiv ekoeliminering
AU38333/85A AU572607B2 (en) 1984-02-01 1984-12-19 Testing the functioning of an adaptive echo canceller
EP85900507A EP0199727B1 (en) 1984-02-01 1984-12-19 Method to test the function of an adaptive echo canceller
KR1019850700235A KR850700294A (ko) 1984-02-01 1984-12-19 적응 에코우 소거기의 기능시험방법
KR1019850700235D KR890004594B1 (ko) 1984-02-01 1984-12-19 적응 에코우 소거기의 기능시험방법
DE8585900507T DE3479950D1 (en) 1984-02-01 1984-12-19 Method to test the function of an adaptive echo canceller
US06/787,803 US4727566A (en) 1984-02-01 1984-12-19 Method to test the function of an adaptive echo canceller
BR8407338A BR8407338A (pt) 1984-02-01 1984-12-19 Processo para testar a funcao de um supressor de ecos auto-adaptavel
PCT/SE1984/000435 WO1985003607A1 (en) 1984-02-01 1984-12-19 Method to test the function of an adaptive echo canceller
JP60500365A JPH06101694B2 (ja) 1984-02-01 1984-12-19 適応可能なエコ−キヤンセラの機能の試験方法
NZ210795A NZ210795A (en) 1984-02-01 1985-01-09 Testing adaptive echo canceller
GR850142A GR850142B (es) 1984-02-01 1985-01-18
EG33/85A EG16599A (en) 1984-02-01 1985-01-21 Method to test the function of an adaptive echo canaceller
ES539839A ES8606756A1 (es) 1984-02-01 1985-01-25 Un metodo de comprobar el funcionamiento de un aparato para compensacion de ecos adaptable,incluido en un equipo de transmision para comunicacion de datos
IT19229/85A IT1183302B (it) 1984-02-01 1985-01-25 Metodo per il controllo della funzione di un soppressore di eco adattabile
CA000472965A CA1250633A (en) 1984-02-01 1985-01-28 Method to test the function of an adaptive echo canceller
MX204210A MX157106A (es) 1984-02-01 1985-01-31 Aparato para probar la funcion de un cancelador de eco adaptable en un equipo de transmision de datos
DD85272909A DD229260A5 (de) 1984-02-01 1985-01-31 Verfahren zum pruefen der funktion eines adaptiven echounterdrueckers
MA20567A MA20343A1 (fr) 1984-02-01 1985-02-01 Procede pour tester le fonctionnement d'un supresseur d'echo a intervention adaptable
PT79914A PT79914B (en) 1984-02-01 1985-02-01 Method to test the function of an adaptive echo canceller
NO853668A NO853668L (no) 1984-02-01 1985-09-18 Fremgangsmaate for aa teste funksjonen av en selvtilpassende ekkoeliminator.
DK443085A DK443085A (da) 1984-02-01 1985-09-30 Fremgangsmaade til at teste funktionen af et adaptivt ekkoelimineringskredsloeb
FI860812A FI860812A (fi) 1984-02-01 1986-02-25 Foerfarande foer att testa funktionen hos en adaptiv ekoeliminerare.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8400502A SE441052B (sv) 1984-02-01 1984-02-01 Forfarande for att testa funktionen hos en anordning for adaptiv ekoeliminering

Publications (3)

Publication Number Publication Date
SE8400502D0 SE8400502D0 (sv) 1984-02-01
SE8400502L SE8400502L (es) 1985-08-02
SE441052B true SE441052B (sv) 1985-09-02

Family

ID=20354552

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8400502A SE441052B (sv) 1984-02-01 1984-02-01 Forfarande for att testa funktionen hos en anordning for adaptiv ekoeliminering

Country Status (22)

Country Link
US (1) US4727566A (es)
EP (1) EP0199727B1 (es)
JP (1) JPH06101694B2 (es)
KR (2) KR890004594B1 (es)
AU (1) AU572607B2 (es)
BR (1) BR8407338A (es)
CA (1) CA1250633A (es)
DD (1) DD229260A5 (es)
DE (1) DE3479950D1 (es)
DK (1) DK443085A (es)
EG (1) EG16599A (es)
ES (1) ES8606756A1 (es)
FI (1) FI860812A (es)
GR (1) GR850142B (es)
IT (1) IT1183302B (es)
MA (1) MA20343A1 (es)
MX (1) MX157106A (es)
NO (1) NO853668L (es)
NZ (1) NZ210795A (es)
PT (1) PT79914B (es)
SE (1) SE441052B (es)
WO (1) WO1985003607A1 (es)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4689805A (en) * 1986-04-29 1987-08-25 Oy Nokia Ab Method of and a device for correcting signal distortion caused by a cable

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0156315B1 (de) * 1984-03-30 1991-06-05 Siemens Aktiengesellschaft Schaltungsanordnung zum Prüfen der Funktionsfähigkeit einer Datenübertragunseinrichtung
FR2615057B1 (fr) * 1987-05-05 1989-06-16 Rahyer Alain Procede et dispositif de simulation de chemin d'echo pour tester des annuleurs d'echo
EP0300352B1 (de) * 1987-07-16 1992-12-09 Siemens Aktiengesellschaft Prüfeinrichtung für digitale Echokompensatoren
NL8701750A (nl) * 1987-07-24 1989-02-16 At & T & Philips Telecomm Zend-ontvanginrichting voor vol-duplex datatransmissie met een echocompensator en testvoorzieningen.
FI915196A (fi) * 1991-11-04 1993-05-05 Nokia Telecommunications Oy Foerfarande foer konvergering av en ekoslaeckare i boerjan av ett samtal
US5943392A (en) * 1997-01-24 1999-08-24 Southwestern Bell Telephone Company Device for measuring echo return loss in a two-two wire line system
US6477492B1 (en) 1999-06-15 2002-11-05 Cisco Technology, Inc. System for automated testing of perceptual distortion of prompts from voice response systems
US6999560B1 (en) 1999-06-28 2006-02-14 Cisco Technology, Inc. Method and apparatus for testing echo canceller performance
US20040179676A1 (en) * 1999-06-30 2004-09-16 Kozo Okuda Speech communication apparatus
US7194037B1 (en) * 2000-05-23 2007-03-20 Marvell International Ltd. Active replica transformer hybrid
US7095348B1 (en) 2000-05-23 2006-08-22 Marvell International Ltd. Communication driver
US7280060B1 (en) 2000-05-23 2007-10-09 Marvell International Ltd. Communication driver
USRE41831E1 (en) 2000-05-23 2010-10-19 Marvell International Ltd. Class B driver
US7312739B1 (en) 2000-05-23 2007-12-25 Marvell International Ltd. Communication driver
US6775529B1 (en) 2000-07-31 2004-08-10 Marvell International Ltd. Active resistive summer for a transformer hybrid
US7113121B1 (en) 2000-05-23 2006-09-26 Marvell International Ltd. Communication driver
US6462688B1 (en) 2000-12-18 2002-10-08 Marvell International, Ltd. Direct drive programmable high speed power digital-to-analog converter
US7433665B1 (en) 2000-07-31 2008-10-07 Marvell International Ltd. Apparatus and method for converting single-ended signals to a differential signal, and transceiver employing same
US7606547B1 (en) * 2000-07-31 2009-10-20 Marvell International Ltd. Active resistance summer for a transformer hybrid
US7298173B1 (en) 2004-10-26 2007-11-20 Marvell International Ltd. Slew rate control circuit for small computer system interface (SCSI) differential driver
US7680250B1 (en) 2004-11-24 2010-03-16 Interactive Quality Services Interactive method and system of testing an automated call telephonic communication system
US7312662B1 (en) 2005-08-09 2007-12-25 Marvell International Ltd. Cascode gain boosting system and method for a transmitter
US7577892B1 (en) 2005-08-25 2009-08-18 Marvell International Ltd High speed iterative decoder
CN102044253B (zh) * 2010-10-29 2012-05-30 深圳创维－Rgb电子有限公司 一种回声信号处理方法、系统及电视机

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3637954A (en) * 1969-05-22 1972-01-25 Bell Telephone Labor Inc Method and apparatus for dynamic testing of echo suppressors in telephone trunk systems
JPS5325767B2 (es) * 1974-09-05 1978-07-28
FR2448258A1 (fr) * 1979-02-05 1980-08-29 Trt Telecom Radio Electr Systeme de test d'un dispositif muni d'un annuleur d'echo
US4282411A (en) * 1979-06-04 1981-08-04 Tellabs, Inc. Residual echo suppressor for echo canceller
US4360712A (en) * 1979-09-05 1982-11-23 Communications Satellite Corporation Double talk detector for echo cancellers
FR2469837A1 (fr) * 1979-11-07 1981-05-22 Trt Telecom Radio Electr Dispositif de detection de porteuse dans un modem muni d'un annuleur d'echo
SE426764B (sv) * 1981-11-02 1983-02-07 Ellemtel Utvecklings Ab Forfarande att astadkomma adaptiv ekoeliminering vid overforing av digital information i duplex jemte anordning for utforande av forfarandet
US4546216A (en) * 1983-01-27 1985-10-08 At&T Bell Laboratories Echo suppressor for improving echo canceler performance

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4689805A (en) * 1986-04-29 1987-08-25 Oy Nokia Ab Method of and a device for correcting signal distortion caused by a cable

Also Published As

Publication number Publication date
AU3833385A (en) 1985-08-27
IT1183302B (it) 1987-10-22
SE8400502L (es) 1985-08-02
NZ210795A (en) 1989-01-06
DD229260A5 (de) 1985-10-30
SE8400502D0 (sv) 1984-02-01
PT79914A (en) 1985-03-01
JPH06101694B2 (ja) 1994-12-12
AU572607B2 (en) 1988-05-12
EG16599A (en) 1989-01-30
PT79914B (en) 1986-09-11
DK443085D0 (da) 1985-09-30
MX157106A (es) 1988-10-27
DE3479950D1 (en) 1989-11-02
EP0199727A1 (en) 1986-11-05
DK443085A (da) 1985-09-30
IT8519229A0 (it) 1985-01-25
KR890004594B1 (ko) 1989-11-16
ES8606756A1 (es) 1986-04-01
CA1250633A (en) 1989-02-28
MA20343A1 (fr) 1985-10-01
EP0199727B1 (en) 1989-09-27
JPS61501182A (ja) 1986-06-12
ES539839A0 (es) 1986-04-01
FI860812A0 (fi) 1986-02-25
US4727566A (en) 1988-02-23
WO1985003607A1 (en) 1985-08-15
GR850142B (es) 1985-03-04
FI860812A (fi) 1986-02-25
NO853668L (no) 1985-09-18
BR8407338A (pt) 1986-11-25
KR850700294A (ko) 1985-12-26

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