JPS57160026A - Tuning device - Google Patents

Tuning device

Info

Publication number
JPS57160026A
JPS57160026A JP56045279A JP4527981A JPS57160026A JP S57160026 A JPS57160026 A JP S57160026A JP 56045279 A JP56045279 A JP 56045279A JP 4527981 A JP4527981 A JP 4527981A JP S57160026 A JPS57160026 A JP S57160026A
Authority
JP
Japan
Prior art keywords
circuit
tone signal
averaged
deviation
indication
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
JP56045279A
Other languages
Japanese (ja)
Inventor
Seizo Yoshikawa
Miki Tono
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.)
Seiko Instruments Inc
Original Assignee
Seiko Instruments Inc
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 Seiko Instruments Inc filed Critical Seiko Instruments Inc
Priority to JP56045279A priority Critical patent/JPS57160026A/en
Publication of JPS57160026A publication Critical patent/JPS57160026A/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 eliminate the deviation of indication in an indicating section, by a method wherein averaged tone signal is processed in a noise eliminating circuit. CONSTITUTION:Output signal of a tone signal processing circuit 1 is entered through a period counting circuit 2 into a musical interval deviation discriminating circuit 3. Tuning tone signal outputted from the musical interval deviation discriminating circuit 3 is averaged by a first averaging circuit 51 in an averaging circuit 5. When differentiating value 51a of tone signal averaged by the circuit 51 exceeds a prescribed value, latch is inhibited by a differentiating value discriminating circuit 521 and a latch control circuit 522 in a noise eliminating circuit 52 and the signal is latched at a latch circuit 523. Tone signal after noise eliminating at the circuit 52 is averaged further by a second averaging circuit 53 and indicated at an indicating circuit 6, and indication deviation in an indicating section of a tuning device is eliminated and the indication is readily seen.
JP56045279A 1981-03-27 1981-03-27 Tuning device Pending JPS57160026A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56045279A JPS57160026A (en) 1981-03-27 1981-03-27 Tuning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56045279A JPS57160026A (en) 1981-03-27 1981-03-27 Tuning device

Publications (1)

Publication Number Publication Date
JPS57160026A true JPS57160026A (en) 1982-10-02

Family

ID=12714864

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56045279A Pending JPS57160026A (en) 1981-03-27 1981-03-27 Tuning device

Country Status (1)

Country Link
JP (1) JPS57160026A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54109886A (en) * 1978-02-17 1979-08-28 Nippon Gakki Seizo Kk Tuning device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54109886A (en) * 1978-02-17 1979-08-28 Nippon Gakki Seizo Kk Tuning device

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