GB0511162D0 - Subband coefficient adaptor for adaptive filter - Google Patents

Subband coefficient adaptor for adaptive filter

Info

Publication number
GB0511162D0
GB0511162D0 GBGB0511162.0A GB0511162A GB0511162D0 GB 0511162 D0 GB0511162 D0 GB 0511162D0 GB 0511162 A GB0511162 A GB 0511162A GB 0511162 D0 GB0511162 D0 GB 0511162D0
Authority
GB
United Kingdom
Prior art keywords
adaptive filter
subband coefficient
coefficient adaptor
adaptor
subband
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.)
Withdrawn
Application number
GBGB0511162.0A
Other versions
GB2439988A (en
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.)
TECTEON PLC
Original Assignee
TECTEON PLC
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 TECTEON PLC filed Critical TECTEON PLC
Priority to GB0511162A priority Critical patent/GB2439988A/en
Publication of GB0511162D0 publication Critical patent/GB0511162D0/en
Publication of GB2439988A publication Critical patent/GB2439988A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H21/00—Adaptive networks
    • H03H21/0012—Digital adaptive filters
    • H03H21/0025—Particular filtering methods
    • H03H21/0027—Particular filtering methods filtering in the frequency domain
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F17/00—Digital computing or data processing equipment or methods, specially adapted for specific functions
    • G06F17/10—Complex mathematical operations
    • 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
    • H03H21/0025—Particular filtering methods
    • H03H2021/0041—Subband decomposition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2203/00—Indexing scheme relating to line transmission systems
    • H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
    • H04B2203/5404—Methods of transmitting or receiving signals via power distribution lines
    • H04B2203/5416—Methods of transmitting or receiving signals via power distribution lines by adding signals to the wave form of the power source

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Data Mining & Analysis (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Computational Mathematics (AREA)
  • Algebra (AREA)
  • Mathematical Optimization (AREA)
  • Signal Processing (AREA)
  • Pure & Applied Mathematics (AREA)
  • Databases & Information Systems (AREA)
  • Software Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
GB0511162A 2005-06-01 2005-06-01 Subband coefficient adaptor for adaptive filter Withdrawn GB2439988A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0511162A GB2439988A (en) 2005-06-01 2005-06-01 Subband coefficient adaptor for adaptive filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0511162A GB2439988A (en) 2005-06-01 2005-06-01 Subband coefficient adaptor for adaptive filter

Publications (2)

Publication Number Publication Date
GB0511162D0 true GB0511162D0 (en) 2005-07-06
GB2439988A GB2439988A (en) 2008-01-16

Family

ID=34834962

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0511162A Withdrawn GB2439988A (en) 2005-06-01 2005-06-01 Subband coefficient adaptor for adaptive filter

Country Status (1)

Country Link
GB (1) GB2439988A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2448201A (en) * 2007-04-04 2008-10-08 Zarlink Semiconductor Inc Cancelling non-linear echo during full duplex communication in a hands free communication system.
WO2014047854A1 (en) 2012-09-27 2014-04-03 华为技术有限公司 Adaptive filtering method and system based on error sub-band
US9837065B2 (en) 2014-12-08 2017-12-05 Ford Global Technologies, Llc Variable bandwidth delayless subband algorithm for broadband active noise control system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06318885A (en) * 1993-03-11 1994-11-15 Nec Corp Unknown system identifying method/device using band division adaptive filter
US5937009A (en) * 1996-06-28 1999-08-10 Wong; Kon Max Sub-band echo canceller using optimum wavelet packets and cross-band cancellation
US5933797A (en) * 1997-02-28 1999-08-03 Telefonaktiebolaget Lm Ericsson (Publ) Adaptive dual filter echo cancellation
GB2344036B (en) * 1998-11-23 2004-01-21 Mitel Corp Single-sided subband filters
GB2379369B (en) * 2001-08-29 2005-06-29 Zarlink Semiconductor Inc Subband echo location and double-talk detection in communication systems
JP4403776B2 (en) * 2003-11-05 2010-01-27 沖電気工業株式会社 Echo canceller

Also Published As

Publication number Publication date
GB2439988A (en) 2008-01-16

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Legal Events

Date Code Title Description
AT Applications terminated before publication under section 16(1)
720A Reinstatement of application (patents act 1977, section 20(2)a)

Free format text: REQUEST FOR REINSTATEMENT FILED

Free format text: REQUEST FOR REINSTATEMENT ALLOWED

WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)