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GB2080068B - Digital filter apparatus - Google Patents

  • ️Wed Apr 03 1985

GB2080068B - Digital filter apparatus - Google Patents

Digital filter apparatus

Info

Publication number
GB2080068B
GB2080068B GB8120520A GB8120520A GB2080068B GB 2080068 B GB2080068 B GB 2080068B GB 8120520 A GB8120520 A GB 8120520A GB 8120520 A GB8120520 A GB 8120520A GB 2080068 B GB2080068 B GB 2080068B Authority
GB
United Kingdom
Prior art keywords
digital filter
filter apparatus
digital
filter
Prior art date
1980-07-09
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
Application number
GB8120520A
Other versions
GB2080068A (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.)
Casio Computer Co Ltd
Original Assignee
Casio Computer Co Ltd
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.)
1980-07-09
Filing date
1981-07-02
Publication date
1985-04-03
1980-07-09 Priority claimed from JP9446280A external-priority patent/JPS5720011A/en
1980-07-09 Priority claimed from JP9446380A external-priority patent/JPS5720012A/en
1980-07-09 Priority claimed from JP9446680A external-priority patent/JPS5720015A/en
1980-07-09 Priority claimed from JP9446180A external-priority patent/JPS5720010A/en
1981-02-26 Priority claimed from JP56027912A external-priority patent/JPS57142022A/en
1981-07-02 Application filed by Casio Computer Co Ltd filed Critical Casio Computer Co Ltd
1982-01-27 Publication of GB2080068A publication Critical patent/GB2080068A/en
1985-04-03 Application granted granted Critical
1985-04-03 Publication of GB2080068B publication Critical patent/GB2080068B/en
Status Expired 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
    • H03H17/0294—Variable filters; Programmable 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Networks Using Active Elements (AREA)
  • Complex Calculations (AREA)
GB8120520A 1980-07-09 1981-07-02 Digital filter apparatus Expired GB2080068B (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP9446280A JPS5720011A (en) 1980-07-09 1980-07-09 Digital filter device
JP9446380A JPS5720012A (en) 1980-07-09 1980-07-09 Band-pass filter
JP9446680A JPS5720015A (en) 1980-07-09 1980-07-09 High-pass filter
JP9446180A JPS5720010A (en) 1980-07-09 1980-07-09 Digital filter device
JP56027912A JPS57142022A (en) 1981-02-26 1981-02-26 Resonance characteristic controlling system in digital filter

Publications (2)

Publication Number Publication Date
GB2080068A GB2080068A (en) 1982-01-27
GB2080068B true GB2080068B (en) 1985-04-03

Family

ID=27520976

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8120520A Expired GB2080068B (en) 1980-07-09 1981-07-02 Digital filter apparatus

Country Status (2)

Country Link
DE (1) DE3127189C2 (en)
GB (1) GB2080068B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4494214A (en) * 1983-02-03 1985-01-15 Rca Corporation Apparatus for generating scaled weighting coefficients for sampled data filters
JP2892205B2 (en) * 1991-11-28 1999-05-17 株式会社ケンウッド Transmission frequency characteristic correction device
WO1993011647A1 (en) * 1991-11-28 1993-06-10 Kabushiki Kaisha Kenwood Device for correcting frequency characteristic of sound field
JP4308955B2 (en) * 1999-01-20 2009-08-05 パナソニック株式会社 Filter device and filter coefficient acquisition method thereof
GB9908810D0 (en) * 1999-04-16 1999-06-09 Sony Uk Ltd Digital filtering
US6581080B1 (en) 1999-04-16 2003-06-17 Sony United Kingdom Limited Digital filters
GB2378331A (en) * 2001-07-30 2003-02-05 Ipwireless Inc Digital filter for multi-rate communication

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7506141A (en) * 1975-05-26 1976-11-30 Philips Nv DIGITAL FILTER.

Also Published As

Publication number Publication date
GB2080068A (en) 1982-01-27
DE3127189A1 (en) 1982-03-11
DE3127189C2 (en) 1986-06-19

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Legal Events

Date Code Title Description
2001-07-25 PE20 Patent expired after termination of 20 years

Effective date: 20010701