DK21990A - Adaptivt digitalt filter med en ikke rekursiv del og en rekursiv del - Google Patents

Adaptivt digitalt filter med en ikke rekursiv del og en rekursiv del Download PDF

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Publication number
DK21990A
DK21990A DK021990A DK21990A DK21990A DK 21990 A DK21990 A DK 21990A DK 021990 A DK021990 A DK 021990A DK 21990 A DK21990 A DK 21990A DK 21990 A DK21990 A DK 21990A
Authority
DK
Denmark
Prior art keywords
recursive part
recursive
filter
digital filter
adaptive digital
Prior art date
Application number
DK021990A
Other languages
English (en)
Other versions
DK170319B1 (da
DK21990D0 (da
Inventor
Tore Mikael Andre
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of DK21990D0 publication Critical patent/DK21990D0/da
Publication of DK21990A publication Critical patent/DK21990A/da
Application granted granted Critical
Publication of DK170319B1 publication Critical patent/DK170319B1/da

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • H03H21/0012—Digital adaptive filters
    • 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
    • H04B3/237—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 two adaptive filters, e.g. for near end and for end echo cancelling

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Noise Elimination (AREA)
DK021990A 1988-06-03 1990-01-26 Adaptivt digitalt filter med en ikke rekursiv del og en rekursiv del DK170319B1 (da)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
SE8802076A SE461308B (sv) 1988-06-03 1988-06-03 Adaptivt digitalt filter omfattande en icke rekursiv del och en rekursiv del
SE8802076 1988-06-03
SE8900176 1989-04-05
PCT/SE1989/000176 WO1989012360A1 (en) 1988-06-03 1989-04-05 Adaptive, digital filter including a non-recursive part and a recursive part

Publications (3)

Publication Number Publication Date
DK21990D0 DK21990D0 (da) 1990-01-26
DK21990A true DK21990A (da) 1990-01-26
DK170319B1 DK170319B1 (da) 1995-07-31

Family

ID=20372511

Family Applications (1)

Application Number Title Priority Date Filing Date
DK021990A DK170319B1 (da) 1988-06-03 1990-01-26 Adaptivt digitalt filter med en ikke rekursiv del og en rekursiv del

Country Status (18)

Country Link
US (1) US5014232A (da)
EP (1) EP0347394B1 (da)
JP (1) JPH03502634A (da)
KR (1) KR960000843B1 (da)
CN (1) CN1014288B (da)
AU (1) AU609611B2 (da)
BR (1) BR8906966A (da)
CA (1) CA1310708C (da)
DE (1) DE68905246T2 (da)
DK (1) DK170319B1 (da)
ES (1) ES2038449T3 (da)
FI (1) FI93409C (da)
GR (1) GR3007321T3 (da)
MX (1) MX170248B (da)
NO (1) NO301203B1 (da)
SE (1) SE461308B (da)
TR (1) TR24214A (da)
WO (1) WO1989012360A1 (da)

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US5247474A (en) * 1991-04-18 1993-09-21 Fujitsu Ten Limited Coefficients setting method of a reverberation unit
EP0511698B1 (fr) * 1991-04-23 1998-07-08 Laboratoires D'electronique Philips S.A.S. Egaliseur adaptatif semi-récursif
ES2038904B1 (es) * 1991-09-10 1995-01-16 Alcatel Standard Electrica Procedimiento y dispositivo de cancelacion adaptativa de ecos acusticos.
EP0543568A2 (en) * 1991-11-22 1993-05-26 AT&T Corp. High resolution filtering using low resolution processors
US5402520A (en) * 1992-03-06 1995-03-28 Schnitta; Bonnie S. Neural network method and apparatus for retrieving signals embedded in noise and analyzing the retrieved signals
US5337264A (en) * 1992-06-01 1994-08-09 Levien Raphael L Time reversal gaussian approximation filter
US5615233A (en) * 1992-07-22 1997-03-25 Motorola, Inc. Method for channel estimation using individual adaptation
US5416799A (en) * 1992-08-10 1995-05-16 Stanford Telecommunications, Inc. Dynamically adaptive equalizer system and method
CA2145077C (en) * 1992-09-21 1998-09-01 Graham P. Eatwell Sampled-data filter with low delay
US5754589A (en) * 1993-01-08 1998-05-19 Multi-Tech Systems, Inc. Noncompressed voice and data communication over modem for a computer-based multifunction personal communications system
US5546395A (en) * 1993-01-08 1996-08-13 Multi-Tech Systems, Inc. Dynamic selection of compression rate for a voice compression algorithm in a voice over data modem
US5864560A (en) * 1993-01-08 1999-01-26 Multi-Tech Systems, Inc. Method and apparatus for mode switching in a voice over data computer-based personal communications system
US5453986A (en) * 1993-01-08 1995-09-26 Multi-Tech Systems, Inc. Dual port interface for a computer-based multifunction personal communication system
US5452289A (en) * 1993-01-08 1995-09-19 Multi-Tech Systems, Inc. Computer-based multifunction personal communications system
US6009082A (en) * 1993-01-08 1999-12-28 Multi-Tech Systems, Inc. Computer-based multifunction personal communication system with caller ID
US5535204A (en) * 1993-01-08 1996-07-09 Multi-Tech Systems, Inc. Ringdown and ringback signalling for a computer-based multifunction personal communications system
US5812534A (en) * 1993-01-08 1998-09-22 Multi-Tech Systems, Inc. Voice over data conferencing for a computer-based personal communications system
US5617423A (en) * 1993-01-08 1997-04-01 Multi-Tech Systems, Inc. Voice over data modem with selectable voice compression
JPH0784993A (ja) * 1993-09-17 1995-03-31 Fujitsu Ltd 信号抑圧装置
JP2872547B2 (ja) * 1993-10-13 1999-03-17 シャープ株式会社 格子型フィルタを用いた能動制御方法および装置
US5757801A (en) * 1994-04-19 1998-05-26 Multi-Tech Systems, Inc. Advanced priority statistical multiplexer
US5682386A (en) 1994-04-19 1997-10-28 Multi-Tech Systems, Inc. Data/voice/fax compression multiplexer
FR2729024A1 (fr) * 1994-12-30 1996-07-05 Matra Communication Annuleur d'echo acoustique avec filtrage en sous-bandes
FI98015C (fi) * 1995-05-05 1997-03-25 Unto Kalervo Laine Menetelmä signaalin spektrin mallintamiseksi ja laite menetelmän toteuttamiseksi
FI98177C (fi) * 1995-06-01 1997-04-25 Nokia Mobile Phones Ltd Menetelmä ja piirijärjestely häiriöllisen signaalin käsittelemiseksi
EP0896481B1 (de) * 1997-08-05 2006-08-23 Micronas Semiconductor Holding AG Adaptives Filter
US7242782B1 (en) 1998-07-31 2007-07-10 Onkyo Kk Audio signal processing circuit
US6745218B1 (en) * 1999-03-16 2004-06-01 Matsushita Electric Industrial Co., Ltd. Adaptive digital filter
US6813352B1 (en) 1999-09-10 2004-11-02 Lucent Technologies Inc. Quadrature filter augmentation of echo canceler basis functions
DE19955596A1 (de) * 1999-11-18 2001-06-13 Infineon Technologies Ag Vorrichtung und Verfahren zur Echokompensation bei Gleichlage-Übertragungsverfahren im Duplex-Betrieb über eine Zweidrahtleitung
US6980592B1 (en) * 1999-12-23 2005-12-27 Agere Systems Inc. Digital adaptive equalizer for T1/E1 long haul transceiver
US6480151B2 (en) 2000-12-29 2002-11-12 Lockheed Martin Corporation GPS receiver interference nuller with no satellite signal distortion
US7079574B2 (en) 2001-01-17 2006-07-18 Radiant Networks Plc Carrier phase recovery system for adaptive burst modems and link hopping radio networks
US6628707B2 (en) 2001-05-04 2003-09-30 Radiant Networks Plc Adaptive equalizer system for short burst modems and link hopping radio networks
WO2004093316A2 (en) * 2003-04-17 2004-10-28 Koninklijke Philips Electronics N.V. Adaptive filtering
US7406493B2 (en) * 2004-03-17 2008-07-29 Tektronix, Inc. Up-sampling half-band reconstruction filtering
US7199964B2 (en) * 2005-06-29 2007-04-03 Seagate Technology Llc Adaptive voltage-mode controller for a voice coil motor
NO322301B1 (no) * 2005-07-13 2006-09-11 Tandberg Telecom As Fremgangsmate og system for ekkokansellering med liten forsinkelse.
EP2075924A1 (en) * 2006-09-29 2009-07-01 Panasonic Corporation Waveform equalizing device
RU198305U1 (ru) * 2020-02-26 2020-06-30 Федеральное государственное бюджетное образовательное учреждение высшего образования "МИРЭА - Российский технологический университет" Адаптивный цифровой фильтр для подавления нефлуктуационных помех

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Publication number Priority date Publication date Assignee Title
US4495591A (en) * 1981-02-27 1985-01-22 The Regeants Of The University Of California Pipelined digital filters
DE3116266A1 (de) * 1981-04-24 1982-11-11 TE KA DE Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg Verfahren zum entzerren eines datensignales
DE3120434A1 (de) * 1981-05-22 1982-12-16 Standard Elektrik Lorenz Ag, 7000 Stuttgart Adaptive echokompensationseinrichtung zur digitalen duplexuebertragung auf zweidrahtleitungen
JPS5834615A (ja) * 1981-08-24 1983-03-01 Victor Co Of Japan Ltd Ｉｉｒデイジタルフイルタ
FR2515901A1 (fr) * 1981-11-04 1983-05-06 Trt Telecom Radio Electr Systeme de transmission mic-differentiel avec prediction adaptative
US4791390A (en) * 1982-07-01 1988-12-13 Sperry Corporation MSE variable step adaptive filter
DE3610382A1 (de) * 1986-03-27 1987-10-01 Ant Nachrichtentech Schaltungsanordnung zur adaptiven echoloeschung in endgeraeten fuer duplex-uebertragung
US4803647A (en) * 1986-05-30 1989-02-07 Rca Licensing Corporation Sampled data audio tone control apparatus
CA1271530A (en) * 1986-07-14 1990-07-10 Masaki Kobayashi Adaptive digital filter
US5042026A (en) * 1987-03-03 1991-08-20 Nec Corporation Circuit for cancelling whole or part of a waveform using nonrecursive and recursive filters
US4811360A (en) * 1988-01-14 1989-03-07 General Datacomm, Inc. Apparatus and method for adaptively optimizing equalization delay of data communication equipment

Also Published As

Publication number Publication date
DK170319B1 (da) 1995-07-31
AU609611B2 (en) 1991-05-02
FI93409B (sv) 1994-12-15
SE8802076D0 (sv) 1988-06-03
DE68905246T2 (de) 1993-06-17
GR3007321T3 (da) 1993-07-30
CA1310708C (en) 1992-11-24
DK21990D0 (da) 1990-01-26
US5014232A (en) 1991-05-07
WO1989012360A1 (en) 1989-12-14
NO900357L (no) 1990-01-25
ES2038449T3 (es) 1993-07-16
BR8906966A (pt) 1990-12-18
DE68905246D1 (de) 1993-04-15
CN1014288B (zh) 1991-10-09
SE461308B (sv) 1990-01-29
TR24214A (tr) 1991-07-02
FI900406A0 (fi) 1990-01-25
EP0347394A1 (en) 1989-12-20
SE8802076L (sv) 1989-12-04
KR900702646A (ko) 1990-12-08
KR960000843B1 (ko) 1996-01-13
AU3567089A (en) 1990-01-05
CN1038193A (zh) 1989-12-20
NO301203B1 (no) 1997-09-22
FI93409C (sv) 1995-03-27
EP0347394B1 (en) 1993-03-10
JPH03502634A (ja) 1991-06-13
MX170248B (es) 1993-08-12
NO900357D0 (no) 1990-01-25

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Legal Events

Date Code Title Description
B1 Patent granted (law 1993)
PBP Patent lapsed