JPS5642422A - Variable digital filter - Google Patents

Variable digital filter

Info

Publication number
JPS5642422A
JPS5642422A JP11862779A JP11862779A JPS5642422A JP S5642422 A JPS5642422 A JP S5642422A JP 11862779 A JP11862779 A JP 11862779A JP 11862779 A JP11862779 A JP 11862779A JP S5642422 A JPS5642422 A JP S5642422A
Authority
JP
Japan
Prior art keywords
register
digital signal
delay units
digital
gain
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.)
Granted
Application number
JP11862779A
Other languages
Japanese (ja)
Other versions
JPS6318367B2 (en
Inventor
Masao Kasuga
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.)
Victor Company of Japan Ltd
Original Assignee
Victor Company of Japan 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 Victor Company of Japan Ltd filed Critical Victor Company of Japan Ltd
Priority to JP11862779A priority Critical patent/JPS5642422A/en
Priority to GB8029495A priority patent/GB2061656B/en
Priority to DE19803034584 priority patent/DE3034584A1/en
Priority to US06/187,328 priority patent/US4524422A/en
Publication of JPS5642422A publication Critical patent/JPS5642422A/en
Publication of JPS6318367B2 publication Critical patent/JPS6318367B2/ja
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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Mathematical Physics (AREA)
  • Complex Calculations (AREA)
  • Feedback Control In General (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE:To set the coefficient of a filter freely by facilitating the design of the filter by prescribing Q and its gain by angles to the origin, pole and zero point and then by making it possible to vary parameter of the Q and gain by a fixed function. CONSTITUTION:A signal obtained by pulse code modulation or constant difference modulation is applied from digital signal input terminal 1 to register 2, a digital signal input terminal 1 to register 2, a digital signal from which is applied to cascaded delay units 3 and 4 in sequence to attain time delay equal to sampling period T. Under the control of counter 5, output digital signals of register 2 and delay units 3 and 4 are applied successively to multiplier 6 in time-division mode to multiply them by a coefficient stored in RAM9 as a digital value and its outputs are added by adder 10 to a signal from register 11 to send the sums from output terminal 14 to register 11, where they are held. Next, the digital signal is delayed by delay units 12 and 13 successively by the time equal to the sampling period and then outputted from output terminal 14 via multiplier 10.
JP11862779A 1979-09-14 1979-09-14 Variable digital filter Granted JPS5642422A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP11862779A JPS5642422A (en) 1979-09-14 1979-09-14 Variable digital filter
GB8029495A GB2061656B (en) 1979-09-14 1980-09-12 Digital filter
DE19803034584 DE3034584A1 (en) 1979-09-14 1980-09-13 DIGITAL FILTER
US06/187,328 US4524422A (en) 1979-09-14 1980-09-15 Digital equalizer capable of varying the center frequency, quality factor, and gain to perform various frequency characteristics

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11862779A JPS5642422A (en) 1979-09-14 1979-09-14 Variable digital filter

Publications (2)

Publication Number Publication Date
JPS5642422A true JPS5642422A (en) 1981-04-20
JPS6318367B2 JPS6318367B2 (en) 1988-04-18

Family

ID=14741206

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11862779A Granted JPS5642422A (en) 1979-09-14 1979-09-14 Variable digital filter

Country Status (1)

Country Link
JP (1) JPS5642422A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6034260A (en) * 1983-08-06 1985-02-21 Kanrin Koki:Kk Automatic steel pipe internal deburring device
JPS6242952U (en) * 1985-08-30 1987-03-14

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6034260A (en) * 1983-08-06 1985-02-21 Kanrin Koki:Kk Automatic steel pipe internal deburring device
JPS6242952U (en) * 1985-08-30 1987-03-14

Also Published As

Publication number Publication date
JPS6318367B2 (en) 1988-04-18

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