JPS564920A - Digital filter - Google Patents

Digital filter

Info

Publication number
JPS564920A
JPS564920A JP8106079A JP8106079A JPS564920A JP S564920 A JPS564920 A JP S564920A JP 8106079 A JP8106079 A JP 8106079A JP 8106079 A JP8106079 A JP 8106079A JP S564920 A JPS564920 A JP S564920A
Authority
JP
Japan
Prior art keywords
input
circuit
shift register
switching
subtracting
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
JP8106079A
Other languages
Japanese (ja)
Other versions
JPS6327898B2 (en
Inventor
Tomoaki Irimichi
Masahiro Noguchi
Itaru Kawasaki
Katsuhide Tsukamoto
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP8106079A priority Critical patent/JPS564920A/en
Publication of JPS564920A publication Critical patent/JPS564920A/en
Publication of JPS6327898B2 publication Critical patent/JPS6327898B2/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

Abstract

PURPOSE:To make it possible to introduce attenuation terms easily while simplifying circuit structure, by composing a lattice filter of each one multiplying circuit and one adding-subtracting circuit. CONSTITUTION:Filter coefficient k1 or amplitude signal A is supplied to input (a) of multiplying circuit 102, and the outputs of shift register 108 and latch circuit 110 are also supplied to input (b) switching. Its multiplication result is output from shift register 103. To input (c) of adding-subtracting circuit 106, the outputs of shift registers 103 and 104 are input by switching and to input (d), the oututs of adding-subtracting circuit 106, shift register 109 and latch circuit 110 are also input by switching to perform addition and subtraction. Further, an excitation signal is input to shift register 108 and at the time of change from the end of a cycle to the next cycle, the contents of the latch circuit are updated. Thus, arithmetic comes into effect with simple circuit elements.
JP8106079A 1979-06-26 1979-06-26 Digital filter Granted JPS564920A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8106079A JPS564920A (en) 1979-06-26 1979-06-26 Digital filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8106079A JPS564920A (en) 1979-06-26 1979-06-26 Digital filter

Publications (2)

Publication Number Publication Date
JPS564920A true JPS564920A (en) 1981-01-19
JPS6327898B2 JPS6327898B2 (en) 1988-06-06

Family

ID=13735851

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8106079A Granted JPS564920A (en) 1979-06-26 1979-06-26 Digital filter

Country Status (1)

Country Link
JP (1) JPS564920A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01280797A (en) * 1988-05-06 1989-11-10 Yamaha Corp Structure of rotary valve for wind instrument
JPH01280798A (en) * 1988-05-06 1989-11-10 Yamaha Corp Structure of rotary valve for wind instrument

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01280797A (en) * 1988-05-06 1989-11-10 Yamaha Corp Structure of rotary valve for wind instrument
JPH01280798A (en) * 1988-05-06 1989-11-10 Yamaha Corp Structure of rotary valve for wind instrument
JPH0727366B2 (en) * 1988-05-06 1995-03-29 ヤマハ株式会社 Structure of rotary valve of wind instrument

Also Published As

Publication number Publication date
JPS6327898B2 (en) 1988-06-06

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