DE3887057T2 - Adaptiver Echokompensator mit Doppel-Spracherkennung. - Google Patents

Adaptiver Echokompensator mit Doppel-Spracherkennung.

Info

Publication number
DE3887057T2
DE3887057T2 DE19883887057 DE3887057T DE3887057T2 DE 3887057 T2 DE3887057 T2 DE 3887057T2 DE 19883887057 DE19883887057 DE 19883887057 DE 3887057 T DE3887057 T DE 3887057T DE 3887057 T2 DE3887057 T2 DE 3887057T2
Authority
DE
Germany
Prior art keywords
speech recognition
echo canceller
adaptive echo
double speech
double
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
DE19883887057
Other languages
English (en)
Other versions
DE3887057D1 (de
Inventor
Kannan P Vairavan
Paul Mcleod
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.)
Advanced Micro Devices Inc
Original Assignee
Advanced Micro Devices 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 Advanced Micro Devices Inc filed Critical Advanced Micro Devices Inc
Application granted granted Critical
Publication of DE3887057D1 publication Critical patent/DE3887057D1/de
Publication of DE3887057T2 publication Critical patent/DE3887057T2/de
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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Filters That Use Time-Delay Elements (AREA)
DE19883887057 1987-10-02 1988-09-29 Adaptiver Echokompensator mit Doppel-Spracherkennung. Expired - Fee Related DE3887057T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10432087A 1987-10-02 1987-10-02

Publications (2)

Publication Number Publication Date
DE3887057D1 DE3887057D1 (de) 1994-02-24
DE3887057T2 true DE3887057T2 (de) 1994-08-25

Family

ID=22299861

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19883887057 Expired - Fee Related DE3887057T2 (de) 1987-10-02 1988-09-29 Adaptiver Echokompensator mit Doppel-Spracherkennung.

Country Status (3)

Country Link
EP (1) EP0310055B1 (de)
JP (1) JP2928801B2 (de)
DE (1) DE3887057T2 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2651077B1 (fr) * 1989-08-18 1994-06-10 Letourneur Gregoire Dispositif de traitement d'echo notamment acoustique dans une ligne telephonique
IE920356A1 (en) * 1991-02-14 1992-08-12 Ericsson Telefon Ab L M A device for shutting off an adaptive algorithm
JP2654599B2 (ja) * 1991-02-27 1997-09-17 日本電気株式会社 ダブルトーク検出回路
ES2038904B1 (es) * 1991-09-10 1995-01-16 Alcatel Standard Electrica Procedimiento y dispositivo de cancelacion adaptativa de ecos acusticos.
DE4430189A1 (de) * 1994-08-25 1996-02-29 Sel Alcatel Ag Verfahren zur adaptiven Echokompensation
KR0139157B1 (ko) * 1994-09-07 1998-05-15 김광호 정준표시된 필터계수를 이용하는 고스트 제거장치
US7006458B1 (en) 2000-08-16 2006-02-28 3Com Corporation Echo canceller disabler for modulated data signals
NO318401B1 (no) 2003-03-10 2005-03-14 Tandberg Telecom As Et audio-ekkokanselleringssystem og en fremgangsmate for a tilveiebringe et ekkodempet utgangssignal fra et ekkotillagt signal
JP5430990B2 (ja) 2009-03-25 2014-03-05 株式会社東芝 信号処理方法、装置及びプログラム

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4129753A (en) * 1977-12-09 1978-12-12 Bell Telephone Laboratories, Incorporated Echo canceller using feedback to improve speech detector performance
US4351060A (en) * 1980-10-23 1982-09-21 International Telephone And Telegraph Corporation Automatic, digitally synthesized matching line terminating impedance
US4621172A (en) * 1982-12-22 1986-11-04 Nec Corporation Fast convergence method and system for echo canceller
FR2564667B1 (fr) * 1984-05-15 1986-09-19 Trt Telecom Radio Electr Dispositif de commande d'un annuleur d'echo et d'un ecreteur de centre

Also Published As

Publication number Publication date
EP0310055A1 (de) 1989-04-05
DE3887057D1 (de) 1994-02-24
EP0310055B1 (de) 1994-01-12
JPH01151830A (ja) 1989-06-14
JP2928801B2 (ja) 1999-08-03

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8328 Change in the person/name/address of the agent

Free format text: DERZEIT KEIN VERTRETER BESTELLT

8339 Ceased/non-payment of the annual fee