JPS5611675A - Key-touch strength changing circuit for automatic playing piano - Google Patents

Key-touch strength changing circuit for automatic playing piano

Info

Publication number
JPS5611675A
JPS5611675A JP8538679A JP8538679A JPS5611675A JP S5611675 A JPS5611675 A JP S5611675A JP 8538679 A JP8538679 A JP 8538679A JP 8538679 A JP8538679 A JP 8538679A JP S5611675 A JPS5611675 A JP S5611675A
Authority
JP
Japan
Prior art keywords
key
touch
pulse
signal
circuit
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
JP8538679A
Other languages
Japanese (ja)
Inventor
Zenichi Kawanaka
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.)
Marantz Japan Inc
Original Assignee
Marantz Japan 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 Marantz Japan Inc filed Critical Marantz Japan Inc
Priority to JP8538679A priority Critical patent/JPS5611675A/en
Publication of JPS5611675A publication Critical patent/JPS5611675A/en
Pending legal-status Critical Current

Links

Landscapes

  • Electrophonic Musical Instruments (AREA)

Abstract

PURPOSE: To change the key-touch strength, by changing the duty ratio of the solenoid drive signal in pulse nature fed to the drive circuit of hammer mechanism with the digital signal from external side.
CONSTITUTION: The clock pulse signal a produced from the clock generating circuit 1 is frequency-divided and the timing control signal b is output from the timing control circuit 2. The said control signal b rises the key-touch timing pulse d at the key-touch timing hold circuit 4 and the signal from the key-touch strength information circuit 7 is preset to the preset counter 3. At the preset counter 3, when the preset value in response to the key number at each playing is counted, the reset signal c of the key-touch timing pulse d is fed to the key-touch timing hold circuit 4, and the output pulse width is digitally determined. As a result, the key-touch pulse d is changed for the pulse width with the instruction from external key-touch strength information, allowing to change the key-touch strength easily.
COPYRIGHT: (C)1981,JPO&Japio
JP8538679A 1979-07-04 1979-07-04 Key-touch strength changing circuit for automatic playing piano Pending JPS5611675A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8538679A JPS5611675A (en) 1979-07-04 1979-07-04 Key-touch strength changing circuit for automatic playing piano

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8538679A JPS5611675A (en) 1979-07-04 1979-07-04 Key-touch strength changing circuit for automatic playing piano

Publications (1)

Publication Number Publication Date
JPS5611675A true JPS5611675A (en) 1981-02-05

Family

ID=13857297

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8538679A Pending JPS5611675A (en) 1979-07-04 1979-07-04 Key-touch strength changing circuit for automatic playing piano

Country Status (1)

Country Link
JP (1) JPS5611675A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS587191U (en) * 1981-07-06 1983-01-18 ヤマハ株式会社 Keystroke signal formation circuit for automatic performance
JPS589896A (en) * 1981-07-10 1983-01-20 ウエスチングハウス・エレクトリツク・コ−ポレ−シヨン Melting device for branch-like web growth
JPS6051693A (en) * 1983-08-30 1985-03-23 Hitachi Cable Ltd Method and apparatus for growing crystal
JPS6136197A (en) * 1984-07-06 1986-02-20 ゼネラル　シグナル　コーポレーシヨン Device and method of growing single crystal of semiconductor material from shallow crucible by czochralski art
JPH01119593A (en) * 1987-11-02 1989-05-11 Mitsubishi Metal Corp Crystal growing device
JPH01153589A (en) * 1987-12-08 1989-06-15 Nkk Corp Pulling of single crystal and apparatus therefor
US5087429A (en) * 1988-04-28 1992-02-11 Nkk Corporation Method and apparatus for manufacturing silicon single crystals
CN102761328A (en) * 2011-04-27 2012-10-31 英属开曼群岛商恒景科技股份有限公司 Frequency generation circuit used for generating output frequency signal and related method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4940722A (en) * 1972-08-22 1974-04-16
JPS5417008A (en) * 1977-05-02 1979-02-08 Teledyne Ind Keyboard instrument magnetic tape recorded music performance reproducer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4940722A (en) * 1972-08-22 1974-04-16
JPS5417008A (en) * 1977-05-02 1979-02-08 Teledyne Ind Keyboard instrument magnetic tape recorded music performance reproducer

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS587191U (en) * 1981-07-06 1983-01-18 ヤマハ株式会社 Keystroke signal formation circuit for automatic performance
JPS589896A (en) * 1981-07-10 1983-01-20 ウエスチングハウス・エレクトリツク・コ−ポレ−シヨン Melting device for branch-like web growth
JPH0240638B2 (en) * 1981-07-10 1990-09-12 Westinghouse Electric Corp
JPS6051693A (en) * 1983-08-30 1985-03-23 Hitachi Cable Ltd Method and apparatus for growing crystal
JPS6357398B2 (en) * 1983-08-30 1988-11-11 Hitachi Cable
JPS6136197A (en) * 1984-07-06 1986-02-20 ゼネラル　シグナル　コーポレーシヨン Device and method of growing single crystal of semiconductor material from shallow crucible by czochralski art
JPH01119593A (en) * 1987-11-02 1989-05-11 Mitsubishi Metal Corp Crystal growing device
JPH01153589A (en) * 1987-12-08 1989-06-15 Nkk Corp Pulling of single crystal and apparatus therefor
US5087321A (en) * 1987-12-08 1992-02-11 Nkk Corporation Manufacturing method and equipment of single silicon crystal
US5087429A (en) * 1988-04-28 1992-02-11 Nkk Corporation Method and apparatus for manufacturing silicon single crystals
CN102761328A (en) * 2011-04-27 2012-10-31 英属开曼群岛商恒景科技股份有限公司 Frequency generation circuit used for generating output frequency signal and related method

Similar Documents

Publication Publication Date Title
JPS5779761A (en) Drive method for thermo-sensing picture display device
JPS5611675A (en) Key-touch strength changing circuit for automatic playing piano
JPS52137330A (en) Device for holding peak value
JPS54119902A (en) Pause time limiter for disc reproducer
JPS52146661A (en) Watch with alarm function
JPS5284950A (en) Pulse width setting unit
JPS5329170A (en) Digital electronic watch
JPS5681485A (en) Electronic watch with melody generating function
JPS5633784A (en) Print width control device for dot matrix printer
JPS53103720A (en) Electronic snstrument
JPS5432932A (en) Automatic inserter
JPS52102666A (en) Timer circuit
JPS57109469A (en) Video gain controlling circuit
JPS5218370A (en) Electronic clock
JPS55147385A (en) Alarm electronic watch performing plural melody pieces
JPS57119669A (en) Controlling method for shifting digital type firing pulse phase
JPS5431713A (en) Magnetic recorder-reproducer with electronic counter
JPS5371826A (en) Automatic rhythm pulse generating circuit
JPS5284951A (en) Pulse width setting unit
JPS5589783A (en) Discrimination circuit for time casting signal
JPS6484475A (en) Duty ratio discriminating device
JPS5654383A (en) Electronic watch
JPS5436125A (en) Generator circuit for jitter-less pulse signal
JPS52133768A (en) Light wmi ssion quantity control type photo coupler
JPS5386256A (en) Alarm timepiece