DK0727109T3 - Adaptionsalgoritme med variabel blokstørrelse til støjrobust akustisk ekkoeliminering - Google Patents

Adaptionsalgoritme med variabel blokstørrelse til støjrobust akustisk ekkoeliminering

Info

Publication number
DK0727109T3
DK0727109T3 DK94932117T DK94932117T DK0727109T3 DK 0727109 T3 DK0727109 T3 DK 0727109T3 DK 94932117 T DK94932117 T DK 94932117T DK 94932117 T DK94932117 T DK 94932117T DK 0727109 T3 DK0727109 T3 DK 0727109T3
Authority
DK
Denmark
Prior art keywords
block size
noise
echo cancellation
acoustic echo
variable block
Prior art date
Application number
DK94932117T
Other languages
English (en)
Inventor
Gilbert C Sih
Franklin P Antonio
Original Assignee
Qualcomm 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 Qualcomm Inc filed Critical Qualcomm Inc
Application granted granted Critical
Publication of DK0727109T3 publication Critical patent/DK0727109T3/da

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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • H03H21/0012—Digital adaptive filters

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)
  • Interconnected Communication Systems, Intercoms, And Interphones (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
DK94932117T 1993-11-01 1994-10-27 Adaptionsalgoritme med variabel blokstørrelse til støjrobust akustisk ekkoeliminering DK0727109T3 (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/146,644 US5546459A (en) 1993-11-01 1993-11-01 Variable block size adaptation algorithm for noise-robust acoustic echo cancellation
PCT/US1994/012449 WO1995012919A1 (en) 1993-11-01 1994-10-27 A variable block size adaptation algorithm for noise-robust acoustic echo cancellation

Publications (1)

Publication Number Publication Date
DK0727109T3 true DK0727109T3 (da) 2003-03-24

Family

ID=22518322

Family Applications (1)

Application Number Title Priority Date Filing Date
DK94932117T DK0727109T3 (da) 1993-11-01 1994-10-27 Adaptionsalgoritme med variabel blokstørrelse til støjrobust akustisk ekkoeliminering

Country Status (18)

Country Link
US (1) US5546459A (da)
EP (1) EP0727109B1 (da)
JP (1) JP3351532B2 (da)
KR (1) KR100196011B1 (da)
CN (1) CN1074871C (da)
AT (1) ATE230174T1 (da)
AU (1) AU692487B2 (da)
BR (1) BR9407935A (da)
CA (1) CA2174342C (da)
DE (1) DE69431923T2 (da)
DK (1) DK0727109T3 (da)
ES (1) ES2189809T3 (da)
FI (1) FI113922B (da)
HK (1) HK1011119A1 (da)
IL (1) IL111451A (da)
TW (1) TW351039B (da)
WO (1) WO1995012919A1 (da)
ZA (1) ZA948430B (da)

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US7577248B2 (en) * 2004-06-25 2009-08-18 Texas Instruments Incorporated Method and apparatus for echo cancellation, digit filter adaptation, automatic gain control and echo suppression utilizing block least mean squares
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CN107005268B (zh) 2014-12-15 2020-06-16 三菱电机株式会社 回波消除装置和回波消除方法
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Also Published As

Publication number Publication date
AU692487B2 (en) 1998-06-11
WO1995012919A1 (en) 1995-05-11
EP0727109B1 (en) 2002-12-18
ES2189809T3 (es) 2003-07-16
KR100196011B1 (ko) 1999-06-15
JPH09504668A (ja) 1997-05-06
FI113922B (fi) 2004-06-30
CN1074871C (zh) 2001-11-14
AU8096294A (en) 1995-05-23
DE69431923D1 (de) 2003-01-30
JP3351532B2 (ja) 2002-11-25
ATE230174T1 (de) 2003-01-15
IL111451A (en) 2000-08-13
DE69431923T2 (de) 2003-11-06
KR960706225A (ko) 1996-11-08
FI961824A0 (fi) 1996-04-29
TW351039B (en) 1999-01-21
IL111451A0 (en) 1994-12-29
ZA948430B (en) 1995-06-29
EP0727109A1 (en) 1996-08-21
BR9407935A (pt) 1996-11-26
CN1133655A (zh) 1996-10-16
US5546459A (en) 1996-08-13
CA2174342A1 (en) 1995-05-11
HK1011119A1 (en) 1999-07-02
CA2174342C (en) 1999-12-14
FI961824A (fi) 1996-06-28

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