JPS57190231A - Tuning device - Google Patents

Tuning device

Info

Publication number
JPS57190231A
JPS57190231A JP56075483A JP7548381A JPS57190231A JP S57190231 A JPS57190231 A JP S57190231A JP 56075483 A JP56075483 A JP 56075483A JP 7548381 A JP7548381 A JP 7548381A JP S57190231 A JPS57190231 A JP S57190231A
Authority
JP
Japan
Prior art keywords
pitch
cpu13
changing
scale frequency
switch
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
JP56075483A
Other languages
Japanese (ja)
Inventor
Hidemi Kato
Ritsu Katsuoka
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.)
RIKOO TOKEI KK
Ricoh Elemex Corp
Original Assignee
RIKOO TOKEI KK
Ricoh Elemex Corp
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 RIKOO TOKEI KK, Ricoh Elemex Corp filed Critical RIKOO TOKEI KK
Priority to JP56075483A priority Critical patent/JPS57190231A/en
Publication of JPS57190231A publication Critical patent/JPS57190231A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10G—REPRESENTATION OF MUSIC; RECORDING MUSIC IN NOTATION FORM; ACCESSORIES FOR MUSIC OR MUSICAL INSTRUMENTS NOT OTHERWISE PROVIDED FOR, e.g. SUPPORTS
    • G10G7/00—Other auxiliary devices or accessories, e.g. conductors' batons or separate holders for resin or strings
    • G10G7/02—Tuning forks or like devices

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Auxiliary Devices For Music (AREA)

Abstract

PURPOSE:To facilitate changing of a reference pitch and to enable to perform a high-precise tuning even if the pitch is changed, by mounting a pitch changing switch which instructs a change in a step of a reference scale frequency. CONSTITUTION:A musical tone from an input terminal 1 is supplied to a synchronous oscillator 10, acting as a fundamental 1 wave signal sending circuit, via an amplifier 2. The oscillator 10 fetches a fundamental wave signal, contained in the muscial tone signal, and supplies it to a CPU13. The CPU13 measures a periodic time of the fundamental wave, and a difference between the measurements and a reference scale frequency, assigned by a string assigning switch 12, is instructed to a display 8. Additionally, the CPU13 changes in order the step of the reference scale frequency according to an instruction of a pitch changing switch 12g. This permits the easy changing of a reference pitch and enables to perform a high-precise tuning because of no change in a display position even if the reference pitch is changed.
JP56075483A 1981-05-19 1981-05-19 Tuning device Pending JPS57190231A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56075483A JPS57190231A (en) 1981-05-19 1981-05-19 Tuning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56075483A JPS57190231A (en) 1981-05-19 1981-05-19 Tuning device

Publications (1)

Publication Number Publication Date
JPS57190231A true JPS57190231A (en) 1982-11-22

Family

ID=13577573

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56075483A Pending JPS57190231A (en) 1981-05-19 1981-05-19 Tuning device

Country Status (1)

Country Link
JP (1) JPS57190231A (en)

Similar Documents

Publication Publication Date Title
SE8603552L (en) DEVICE FOR META MICROWAVE NOISE
KR880014446A (en) Clock Generation Circuit of Microcomputer
JPS57190231A (en) Tuning device
CH630774B (en) WATCH PART, ESPECIALLY BRACELET WATCH, ELECTRONICS EQUIPPED WITH AN ALARM DEVICE.
FR2234628B1 (en)
JPS54143621A (en) Electronic musical instrument
JPS51141615A (en) Automatic tuning apparatus for electronic musical instrument
JPS5332011A (en) Sound source apparatus for electronic musical instrument
JPS5236019A (en) Sound source device of electronic musical instrument
JPS5614982A (en) Electronic sounding device for clock
JPS57190233A (en) Tuning device
JPS5425720A (en) Electronic portable musical instrument
JPS5619482A (en) Electronic timepiece equipped with temperature compensating circuit
JPS5276078A (en) Tuning device
JPS5648712A (en) Pll frequency synthesizer receiver
JPS549616A (en) Sound source apparatus of electronic musical instruments
JPS54151020A (en) Sound source circuit of electronic musical instruments
JPS5394167A (en) Digital phase synchronous loop
JPS53149312A (en) Electronic musical instrument
JPS5548622A (en) Portable tuning device for musical instrument
JPS5686381A (en) Electronic watch
JPS54101373A (en) Electronic chronograph
JPS55159179A (en) Announcing sound generator of watch
JPS5355021A (en) Electronic musical instrument
JPS51134618A (en) Keyboard electronic musical instrument