CA1269723C - - Google Patents

Info

Publication number
CA1269723C
CA1269723C CA 514261 CA514261A CA1269723C CA 1269723 C CA1269723 C CA 1269723C CA 514261 CA514261 CA 514261 CA 514261 A CA514261 A CA 514261A CA 1269723 C CA1269723 C CA 1269723C
Authority
CA
Canada
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.)
Expired - Lifetime
Application number
CA 514261
Other versions
CA1266095A1 (en
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 filed Critical
Priority to CA000608677A priority Critical patent/CA1269723A/en
Publication of CA1266095A1 publication Critical patent/CA1266095A1/en
Application granted granted Critical
Publication of CA1269723C publication Critical patent/CA1269723C/xx
Granted legal-status Critical Current

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
    • H03H17/0248—Filters characterised by a particular frequency response or filtering method
    • H03H17/0264—Filter sets with mutual related characteristics
    • H03H17/0273—Polyphase filters
    • H03H17/0277—Polyphase filters comprising recursive filters
    • H03H17/0279—Polyphase filters comprising recursive filters having two phases
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/0248—Filters characterised by a particular frequency response or filtering method
    • H03H17/025—Notch filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/04—Recursive filters
    • H03H17/0416—Recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing
    • H03H17/0427—Recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies
    • H03H17/0438—Recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies the ratio being integer
    • H03H17/0444—Recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies the ratio being integer where the output-delivery frequency is higher than the input sampling frequency, i.e. interpolation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H17/00—Networks using digital techniques
    • H03H17/02—Frequency selective networks
    • H03H17/04—Recursive filters
    • H03H17/0416—Recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing
    • H03H17/0427—Recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies
    • H03H17/0438—Recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies the ratio being integer
    • H03H17/045—Recursive filters with input-sampling frequency and output-delivery frequency which differ, e.g. extrapolation; Anti-aliasing characterized by the ratio between the input-sampling and output-delivery frequencies the ratio being integer where the output-delivery frequency is lower than the input sampling frequency, i.e. decimation

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Tone Control, Compression And Expansion, Limiting Amplitude (AREA)
  • Filters And Equalizers (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Networks Using Active Elements (AREA)
CA000514261A 1985-08-28 1986-07-21 Interpolator/decimator filter structure and a notch filter therefor Granted CA1266095A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA000608677A CA1269723A (en) 1985-08-28 1989-08-17 Notch filter for an interpolator/decimator filter structure

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8521377 1985-08-28
GB8521377A GB2179816B (en) 1985-08-28 1985-08-28 Interpolator/decimator filter structure

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA000608677A Division CA1269723A (en) 1985-08-28 1989-08-17 Notch filter for an interpolator/decimator filter structure

Publications (2)

Publication Number Publication Date
CA1266095A1 CA1266095A1 (en) 1990-02-20
CA1269723C true CA1269723C (en, 2012) 1990-05-29

Family

ID=10584365

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000514261A Granted CA1266095A1 (en) 1985-08-28 1986-07-21 Interpolator/decimator filter structure and a notch filter therefor

Country Status (9)

Country Link
US (1) US4908787A (en, 2012)
EP (1) EP0213853A3 (en, 2012)
JP (1) JPS6251820A (en, 2012)
CN (1) CN1012408B (en, 2012)
BG (1) BG47050A3 (en, 2012)
CA (1) CA1266095A1 (en, 2012)
FI (1) FI863447A7 (en, 2012)
GB (2) GB2179816B (en, 2012)
IN (1) IN167744B (en, 2012)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5034962A (en) * 1988-07-01 1991-07-23 Oki Electric Industry Co., Ltd. Voice-band signal processor
US5214761A (en) * 1989-05-08 1993-05-25 Wang Laboratories, Inc. Real-time adjustable-transform device driver for physical devices
US5181228A (en) * 1990-10-12 1993-01-19 Level One Communications, Inc. System and method for phase equalization
US5122732A (en) * 1991-02-19 1992-06-16 General Electric Company Multi-rate superresolution time series spectrum analyzer
US5168214A (en) * 1991-02-19 1992-12-01 General Electric Company Multi-rate superresolution time series spectrum analyzer
US5226057A (en) * 1991-03-20 1993-07-06 Rockwell International Corporation Receiver and adaptive digital notch filter
US5325318A (en) * 1992-01-31 1994-06-28 Constream Corporation Variable rate digital filter
WO1994018573A1 (fr) * 1993-02-02 1994-08-18 Yoshimutsu Hirata Analyse non harmonique de donnees de forme d'onde et systeme de traitement par synthese de ces donnees
US5436858A (en) * 1994-04-05 1995-07-25 General Electric Company Decimation circuit and method for filtering quantized signals while providing phase angle correction with a substantially linear phase response
US5701099A (en) * 1995-11-27 1997-12-23 Level One Communications, Inc. Transconductor-C filter element with coarse and fine adjustment
WO2013049858A1 (en) 2011-09-30 2013-04-04 Creative Technology Ltd A novel efficient digital microphone decimation filter architecture

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5360539A (en) * 1976-11-12 1978-05-31 Hitachi Ltd Digital filter
JPS5592017A (en) * 1978-12-29 1980-07-12 Nec Corp Digital filter
US4302631A (en) * 1979-11-28 1981-11-24 International Telephone And Telegraph Corporation Decimator apparatus for decreasing the word rate of a digital signal of the type employed in digital telephone systems
JPS58111424A (ja) * 1981-12-24 1983-07-02 Sony Corp ノツチフイルタ
JPS5990419A (ja) * 1982-11-13 1984-05-24 Sony Corp ２次のデイジタル全域通過回路
US4694414A (en) * 1984-12-19 1987-09-15 Rca Corporation Digital delay interpolation filter with amplitude and phase compensation

Also Published As

Publication number Publication date
CN86105230A (zh) 1987-04-29
GB8521377D0 (en) 1985-10-02
GB2179816B (en) 1990-01-10
EP0213853A2 (en) 1987-03-11
GB2179816A (en) 1987-03-11
BG47050A3 (bg) 1990-04-16
IN167744B (en, 2012) 1990-12-15
GB2216741B (en) 1990-05-30
FI863447A7 (fi) 1987-03-01
FI863447A0 (fi) 1986-08-26
GB2216741A (en) 1989-10-11
JPS6251820A (ja) 1987-03-06
EP0213853A3 (en) 1988-05-11
US4908787A (en) 1990-03-13
CA1266095A1 (en) 1990-02-20
CN1012408B (zh) 1991-04-17
GB8902877D0 (en) 1989-03-30

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Legal Events

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