JPS5573127A - Noncirculation-type variable digital filter - Google Patents

Noncirculation-type variable digital filter

Info

Publication number
JPS5573127A
JPS5573127A JP14696778A JP14696778A JPS5573127A JP S5573127 A JPS5573127 A JP S5573127A JP 14696778 A JP14696778 A JP 14696778A JP 14696778 A JP14696778 A JP 14696778A JP S5573127 A JPS5573127 A JP S5573127A
Authority
JP
Japan
Prior art keywords
adder
multiplier
noncirculation
supplied
digital filter
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.)
Pending
Application number
JP14696778A
Other languages
Japanese (ja)
Inventor
Kenji Nakayama
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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.)
Filing date
Publication date
Application filed by NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP14696778A priority Critical patent/JPS5573127A/en
Publication of JPS5573127A publication Critical patent/JPS5573127A/en
Pending 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
    • H03H17/06—Non-recursive filters

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Networks Using Active Elements (AREA)

Abstract

PURPOSE:To secure the application for both the linear and nonlinear phase characteristics by replacing the delay circuit of the noncirculation-type digital filter with the block which features the absolute value of 1 and can vary the phase characteristics. CONSTITUTION:The input signal given from terminal 14 is supplied to 1st adder 15 as well as to 2nd adder 17 through fixed multiplier 16 of the +1 or -1 coefficient. The output of adder 17 is supplied to adder 15 through variable multiplier 18 of multiplier (a) as well as to 3rd adder 21 through fixed multiplier 19 of the +1 or -1 coefficient. The output of adder 15 is supplied to adders 17 and 21 through delay unit 22 which gives the delay of one sampling period of the input signal, and the output of adder 21 is supplied to output terminal 23. This block is used for the delay circuit of the noncirculation-type digital filter to vary multiplier (a) of multiplier 18, and as a result the filter characteristics varies toward the frequency axis. Thus a variable filter can be realized with both the linear and nonlinear phase characteristics.
JP14696778A 1978-11-27 1978-11-27 Noncirculation-type variable digital filter Pending JPS5573127A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14696778A JPS5573127A (en) 1978-11-27 1978-11-27 Noncirculation-type variable digital filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14696778A JPS5573127A (en) 1978-11-27 1978-11-27 Noncirculation-type variable digital filter

Publications (1)

Publication Number Publication Date
JPS5573127A true JPS5573127A (en) 1980-06-02

Family

ID=15419622

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14696778A Pending JPS5573127A (en) 1978-11-27 1978-11-27 Noncirculation-type variable digital filter

Country Status (1)

Country Link
JP (1) JPS5573127A (en)

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