NL172715C - Digitale transversale echo-onderdrukker van het zelfaanpassende type. - Google Patents

Digitale transversale echo-onderdrukker van het zelfaanpassende type.

Info

Publication number
NL172715C
NL172715C NLAANVRAGE7216440,A NL7216440A NL172715C NL 172715 C NL172715 C NL 172715C NL 7216440 A NL7216440 A NL 7216440A NL 172715 C NL172715 C NL 172715C
Authority
NL
Netherlands
Prior art keywords
self
echo suppressor
adaptive type
digital transversal
transversal
Prior art date
Application number
NLAANVRAGE7216440,A
Other languages
English (en)
Dutch (nl)
Other versions
NL7216440A (xx
NL172715B (nl
Original Assignee
Communications Satellite Corp
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 Communications Satellite Corp filed Critical Communications Satellite Corp
Publication of NL7216440A publication Critical patent/NL7216440A/xx
Publication of NL172715B publication Critical patent/NL172715B/xx
Application granted granted Critical
Publication of NL172715C publication Critical patent/NL172715C/xx

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)
NLAANVRAGE7216440,A 1971-12-03 1972-12-04 Digitale transversale echo-onderdrukker van het zelfaanpassende type. NL172715C (nl)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00204507A US3836734A (en) 1971-12-03 1971-12-03 Adaptive echo canceller with multi-increment gain coefficient corrections

Publications (3)

Publication Number Publication Date
NL7216440A NL7216440A (xx) 1973-06-05
NL172715B NL172715B (nl) 1983-05-02
NL172715C true NL172715C (nl) 1983-10-03

Family

ID=22758183

Family Applications (1)

Application Number Title Priority Date Filing Date
NLAANVRAGE7216440,A NL172715C (nl) 1971-12-03 1972-12-04 Digitale transversale echo-onderdrukker van het zelfaanpassende type.

Country Status (10)

Country Link
US (1) US3836734A (xx)
JP (1) JPS5728981B2 (xx)
AU (1) AU467176B2 (xx)
CA (1) CA965891A (xx)
DE (1) DE2259242A1 (xx)
FR (1) FR2162162B1 (xx)
GB (1) GB1409299A (xx)
IT (1) IT975920B (xx)
NL (1) NL172715C (xx)
SE (1) SE387800B (xx)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2272544B1 (xx) * 1974-05-24 1977-03-11 Cit Alcatel
US4021623A (en) * 1975-10-23 1977-05-03 Communications Satellite Corporation (Comsat) Automatic H-register clear for prevention of erroneous convolution in digital adaptive echo canceller
NL7903759A (nl) * 1979-05-14 1980-11-18 Philips Nv Echocompensator met hoogdoorlaatfilter.
NL7905577A (nl) * 1979-07-18 1981-01-20 Philips Nv Inrichting met een niet-recursieffilter.
JPS56153850A (en) * 1980-04-28 1981-11-28 Kokusai Denshin Denwa Co Ltd <Kdd> Echo control system
FR2490901A1 (fr) * 1980-09-19 1982-03-26 Trt Telecom Radio Electr Annuleur d'echo numerique muni d'un convertisseur analogique-numerique a dynamique reglable
US4375692A (en) * 1981-04-30 1983-03-01 The United States Of America As Represented By The Secretary Of The Navy Least squares lattice decision feedback equalizer
US4602133A (en) * 1982-07-23 1986-07-22 Gte Lenkurt Incorporated Adaptive echo cancelling system and method utilizing linear code spacing
US4621172A (en) * 1982-12-22 1986-11-04 Nec Corporation Fast convergence method and system for echo canceller
JPS59151546A (ja) * 1983-02-18 1984-08-30 Nec Corp 適応形反響消去装置
JPS6053336A (ja) * 1983-09-02 1985-03-27 Nec Corp 反響消去装置
US4811342A (en) * 1985-11-12 1989-03-07 Racal Data Communications Inc. High speed analog echo canceller
JPH0345006Y2 (xx) * 1986-10-24 1991-09-24
JPH0191173U (xx) * 1987-12-08 1989-06-15
US5157653A (en) * 1990-08-03 1992-10-20 Coherent Communications Systems Corp. Residual echo elimination with proportionate noise injection
US5258903A (en) * 1991-12-16 1993-11-02 Thomson Consumer Electronics Control circuit and power supply for televisions
DE4430189A1 (de) * 1994-08-25 1996-02-29 Sel Alcatel Ag Verfahren zur adaptiven Echokompensation
US6028929A (en) * 1997-11-14 2000-02-22 Tellabs Operations, Inc. Echo canceller employing dual-H architecture having improved non-linear echo path detection
US20230051021A1 (en) * 2021-08-04 2023-02-16 Nokia Technologies Oy Apparatus, Methods and Computer Programs for Performing Acoustic Echo Cancellation

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1283293B (de) * 1964-09-10 1968-11-21 Nippon Electric Co Echounterdrueckungsschaltung fuer eine Weitverkehrsnachrichtenverbindung
US3400279A (en) * 1964-09-30 1968-09-03 Marconi Co Canada Voltage level sensing circuit
US3458721A (en) * 1965-05-28 1969-07-29 Motorola Inc Quantizing circuit using progressively biased transistors in parallel
US3500000A (en) * 1966-10-31 1970-03-10 Myldred P Kelly Self-adaptive echo canceller
US3499999A (en) * 1966-10-31 1970-03-10 Bell Telephone Labor Inc Closed loop adaptive echo canceller using generalized filter networks
US3632905A (en) * 1969-12-19 1972-01-04 Bell Telephone Labor Inc Method for improving the settling time of a transversal filter adaptive echo canceller
US3732410A (en) * 1969-12-22 1973-05-08 Postmaster Department Res Labo Self adaptive filter and control circuit therefor

Also Published As

Publication number Publication date
US3836734A (en) 1974-09-17
CA965891A (en) 1975-04-08
AU467176B2 (en) 1975-11-20
JPS5728981B2 (xx) 1982-06-19
GB1409299A (en) 1975-10-08
DE2259242C2 (xx) 1988-12-15
FR2162162B1 (xx) 1977-04-08
SE387800B (sv) 1976-09-13
NL7216440A (xx) 1973-06-05
IT975920B (it) 1974-08-10
DE2259242A1 (de) 1973-06-07
FR2162162A1 (xx) 1973-07-13
NL172715B (nl) 1983-05-02
AU4955872A (en) 1974-06-06
JPS4862322A (xx) 1973-08-31

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Legal Events

Date Code Title Description
BA A request for search or an international-type search has been filed
BB A search report has been drawn up
BC A request for examination has been filed
V4 Lapsed because of reaching the maximum lifetime of a patent