JPS54107722A - Electronic musical instrument - Google Patents

Electronic musical instrument

Info

Publication number
JPS54107722A
JPS54107722A JP1452578A JP1452578A JPS54107722A JP S54107722 A JPS54107722 A JP S54107722A JP 1452578 A JP1452578 A JP 1452578A JP 1452578 A JP1452578 A JP 1452578A JP S54107722 A JPS54107722 A JP S54107722A
Authority
JP
Japan
Prior art keywords
value
frequency information
current value
information numerical
change frequency
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
JP1452578A
Other languages
Japanese (ja)
Other versions
JPS6211357B2 (en
Inventor
Akira Nakada
Norio Tomizawa
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.)
Nippon Gakki Co Ltd
Original Assignee
Nippon Gakki 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 Nippon Gakki Co Ltd filed Critical Nippon Gakki Co Ltd
Priority to JP1452578A priority Critical patent/JPS54107722A/en
Publication of JPS54107722A publication Critical patent/JPS54107722A/en
Publication of JPS6211357B2 publication Critical patent/JPS6211357B2/ja
Granted legal-status Critical Current

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  • Electrophonic Musical Instruments (AREA)

Abstract

PURPOSE: To obtain portamento effect tones by providing means of adding correction values to change frequency information numerical values at specified timings and forming new change frequency information numerical values.
CONSTITUTION: With the change frequency information numerical value F' being inputted to the B input end of a subtractor 12 as a current value FA and the frequency information numerical value F being inputted to the A input end of the subtractor 12 as a target value FB, the difference between this target value FB and the current value FA is added as correction value to the current value FA each time when portamento clock PCL is generated, whereby the current value FA is subsequently changed. Such operation is repeatedly performed until the current value FA coincides with the target value FB, i.e., the value of the differential signal D outputted from the subtractor 12 becomes zero, whereby the change frequency information numerical values F' subsequently changing toward the target value are formed and the portamento effect tones are obtained from a sound system 7.
COPYRIGHT: (C)1979,JPO&Japio
JP1452578A 1978-02-10 1978-02-10 Electronic musical instrument Granted JPS54107722A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1452578A JPS54107722A (en) 1978-02-10 1978-02-10 Electronic musical instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1452578A JPS54107722A (en) 1978-02-10 1978-02-10 Electronic musical instrument

Publications (2)

Publication Number Publication Date
JPS54107722A true JPS54107722A (en) 1979-08-23
JPS6211357B2 JPS6211357B2 (en) 1987-03-12

Family

ID=11863526

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1452578A Granted JPS54107722A (en) 1978-02-10 1978-02-10 Electronic musical instrument

Country Status (1)

Country Link
JP (1) JPS54107722A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57104190A (en) * 1980-11-03 1982-06-29 Kawai Musical Instr Mfg Co Constant speed double sound portamento system
US4524668A (en) * 1981-10-15 1985-06-25 Nippon Gakki Seizo Kabushiki Kaisha Electronic musical instrument capable of performing natural slur effect
JPS60192995A (en) * 1984-03-14 1985-10-01 ヤマハ株式会社 Functional waveform generator for electronic musical instrument
JPS60195592A (en) * 1984-03-19 1985-10-04 ヤマハ株式会社 Functional waveform generator for electronic musical instrument
JPS6426896A (en) * 1988-05-13 1989-01-30 Yamaha Corp Electronic musical instrument
US4920851A (en) * 1987-05-22 1990-05-01 Yamaha Corporation Automatic musical tone generating apparatus for generating musical tones with slur effect

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57104190A (en) * 1980-11-03 1982-06-29 Kawai Musical Instr Mfg Co Constant speed double sound portamento system
JPH05717B2 (en) * 1980-11-03 1993-01-06 Kawai Musical Instr Mfg Co
US4524668A (en) * 1981-10-15 1985-06-25 Nippon Gakki Seizo Kabushiki Kaisha Electronic musical instrument capable of performing natural slur effect
JPS60192995A (en) * 1984-03-14 1985-10-01 ヤマハ株式会社 Functional waveform generator for electronic musical instrument
JPS60195592A (en) * 1984-03-19 1985-10-04 ヤマハ株式会社 Functional waveform generator for electronic musical instrument
US4920851A (en) * 1987-05-22 1990-05-01 Yamaha Corporation Automatic musical tone generating apparatus for generating musical tones with slur effect
JPS6426896A (en) * 1988-05-13 1989-01-30 Yamaha Corp Electronic musical instrument

Also Published As

Publication number Publication date
JPS6211357B2 (en) 1987-03-12

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