DK0660958T3 - Sampled-data-filter med lille forsinkelse - Google Patents

Sampled-data-filter med lille forsinkelse

Info

Publication number
DK0660958T3
DK0660958T3 DK92920842T DK92920842T DK0660958T3 DK 0660958 T3 DK0660958 T3 DK 0660958T3 DK 92920842 T DK92920842 T DK 92920842T DK 92920842 T DK92920842 T DK 92920842T DK 0660958 T3 DK0660958 T3 DK 0660958T3
Authority
DK
Denmark
Prior art keywords
small
data filter
delay sampled
sampled
delay
Prior art date
Application number
DK92920842T
Other languages
English (en)
Inventor
Graham Eatwell
Original Assignee
Noise Cancellation Tech
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 Noise Cancellation Tech filed Critical Noise Cancellation Tech
Application granted granted Critical
Publication of DK0660958T3 publication Critical patent/DK0660958T3/da

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0283—Filters characterised by the filter structure

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Feedback Control In General (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Networks Using Active Elements (AREA)
DK92920842T 1992-09-21 1992-09-21 Sampled-data-filter med lille forsinkelse DK0660958T3 (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/US1992/007802 WO1994007212A1 (en) 1992-09-21 1992-09-21 Sampled-data filter with low delay
CA002145077A CA2145077C (en) 1992-09-21 1992-09-21 Sampled-data filter with low delay

Publications (1)

Publication Number Publication Date
DK0660958T3 true DK0660958T3 (da) 1999-12-27

Family

ID=25677848

Family Applications (1)

Application Number Title Priority Date Filing Date
DK92920842T DK0660958T3 (da) 1992-09-21 1992-09-21 Sampled-data-filter med lille forsinkelse

Country Status (6)

Country Link
EP (1) EP0660958B1 (da)
CA (1) CA2145077C (da)
DE (1) DE69229484T2 (da)
DK (1) DK0660958T3 (da)
ES (1) ES2134814T3 (da)
WO (1) WO1994007212A1 (da)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0784993A (ja) * 1993-09-17 1995-03-31 Fujitsu Ltd 信号抑圧装置
US5619581A (en) * 1994-05-18 1997-04-08 Lord Corporation Active noise and vibration cancellation system
DE10028460B4 (de) * 2000-06-08 2009-02-12 Schwarzer GmbH Meßgeräte für die Medizin Integrierter Signalverarbeitungsschaltkreis
DE10030583A1 (de) * 2000-06-21 2002-01-10 Marconi Comm Gmbh Vorrichtung und Verfahren zum Verarbeiten von Frequenzsignalen
DE102005046445B4 (de) 2005-09-28 2019-10-10 Snaptrack, Inc. Bandpassfilter
GB2465681B (en) * 2006-04-12 2010-12-15 Wolfson Microelectronics Plc Digital circuit arrangements for ambient noise-reduction
GB2446966B (en) 2006-04-12 2010-07-07 Wolfson Microelectronics Plc Digital circuit arrangements for ambient noise-reduction
EP2259250A1 (en) * 2009-06-03 2010-12-08 Nxp B.V. Hybrid active noise reduction device for reducing environmental noise, method for determining an operational parameter of a hybrid active noise reduction device, and program element
US8958571B2 (en) 2011-06-03 2015-02-17 Cirrus Logic, Inc. MIC covering detection in personal audio devices
US9318094B2 (en) 2011-06-03 2016-04-19 Cirrus Logic, Inc. Adaptive noise canceling architecture for a personal audio device
US9824677B2 (en) 2011-06-03 2017-11-21 Cirrus Logic, Inc. Bandlimiting anti-noise in personal audio devices having adaptive noise cancellation (ANC)
US9318090B2 (en) 2012-05-10 2016-04-19 Cirrus Logic, Inc. Downlink tone detection and adaptation of a secondary path response model in an adaptive noise canceling system
US9123321B2 (en) 2012-05-10 2015-09-01 Cirrus Logic, Inc. Sequenced adaptation of anti-noise generator response and secondary path response in an adaptive noise canceling system
US9532139B1 (en) 2012-09-14 2016-12-27 Cirrus Logic, Inc. Dual-microphone frequency amplitude response self-calibration
US9414150B2 (en) 2013-03-14 2016-08-09 Cirrus Logic, Inc. Low-latency multi-driver adaptive noise canceling (ANC) system for a personal audio device
US10219071B2 (en) 2013-12-10 2019-02-26 Cirrus Logic, Inc. Systems and methods for bandlimiting anti-noise in personal audio devices having adaptive noise cancellation
US9478212B1 (en) 2014-09-03 2016-10-25 Cirrus Logic, Inc. Systems and methods for use of adaptive secondary path estimate to control equalization in an audio device
US20160365084A1 (en) * 2015-06-09 2016-12-15 Cirrus Logic International Semiconductor Ltd. Hybrid finite impulse response filter
WO2017029550A1 (en) 2015-08-20 2017-02-23 Cirrus Logic International Semiconductor Ltd Feedback adaptive noise cancellation (anc) controller and method having a feedback response partially provided by a fixed-response filter
US10013966B2 (en) 2016-03-15 2018-07-03 Cirrus Logic, Inc. Systems and methods for adaptive active noise cancellation for multiple-driver personal audio device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4519084A (en) * 1982-09-29 1985-05-21 At&T Bell Laboratories Matched filter for combating multipath fading
CA1273411A (en) * 1986-02-14 1990-08-28 Lajos Gazsi Digital circuit for sampling rate variation and signal filtering and method for constructing the circuit
GB8727602D0 (en) * 1987-11-25 1987-12-31 Nat Res Dev Industrial control systems
US4872127A (en) * 1988-01-07 1989-10-03 Magnetek, Inc. Ripple rejection filter
US4922530A (en) * 1988-03-18 1990-05-01 Tellabs, Inc. Adaptive filter with coefficient averaging and method
SE461308B (sv) * 1988-06-03 1990-01-29 Ericsson Telefon Ab L M Adaptivt digitalt filter omfattande en icke rekursiv del och en rekursiv del
GB2222733B (en) * 1988-09-07 1992-01-22 Topexpress Ltd Analogue signal filter
JP2882586B2 (ja) * 1989-01-13 1999-04-12 株式会社東芝 適応制御装置

Also Published As

Publication number Publication date
DE69229484T2 (de) 2000-02-03
EP0660958A1 (en) 1995-07-05
CA2145077C (en) 1998-09-01
DE69229484D1 (de) 1999-07-29
ES2134814T3 (es) 1999-10-16
EP0660958A4 (en) 1995-11-22
EP0660958B1 (en) 1999-06-23
CA2145077A1 (en) 1994-03-31
WO1994007212A1 (en) 1994-03-31

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