JPS5917433B2 - 電子楽器の音源波形形成装置 - Google Patents

電子楽器の音源波形形成装置

Info

Publication number
JPS5917433B2
JPS5917433B2 JP49064382A JP6438274A JPS5917433B2 JP S5917433 B2 JPS5917433 B2 JP S5917433B2 JP 49064382 A JP49064382 A JP 49064382A JP 6438274 A JP6438274 A JP 6438274A JP S5917433 B2 JPS5917433 B2 JP S5917433B2
Authority
JP
Japan
Prior art keywords
digital signal
circuit
waveform
envelope
storage 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.)
Expired
Application number
JP49064382A
Other languages
English (en)
Japanese (ja)
Other versions
JPS50156420A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html
Inventor
敏雄 釘沢
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.)
Kawai Musical Instruments Manufacturing Co Ltd
Original Assignee
Kawai Musical Instruments Manufacturing 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 Kawai Musical Instruments Manufacturing Co Ltd filed Critical Kawai Musical Instruments Manufacturing Co Ltd
Priority to JP49064382A priority Critical patent/JPS5917433B2/ja
Priority to US05/584,367 priority patent/US4030395A/en
Publication of JPS50156420A publication Critical patent/JPS50156420A/ja
Publication of JPS5917433B2 publication Critical patent/JPS5917433B2/ja
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H7/00—Instruments in which the tones are synthesised from a data store, e.g. computer organs
    • G10H7/08—Instruments in which the tones are synthesised from a data store, e.g. computer organs by calculating functions or polynomial approximations to evaluate amplitudes at successive sample points of a tone waveform
    • G10H7/12—Instruments in which the tones are synthesised from a data store, e.g. computer organs by calculating functions or polynomial approximations to evaluate amplitudes at successive sample points of a tone waveform by means of a recursive algorithm using one or more sets of parameters stored in a memory and the calculated amplitudes of one or more preceding sample points
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10H—ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE
    • G10H2250/00—Aspects of algorithms or signal processing methods without intrinsic musical character, yet specifically adapted for or used in electrophonic musical processing
    • G10H2250/541—Details of musical waveform synthesis, i.e. audio waveshape processing from individual wavetable samples, independently of their origin or of the sound they represent
    • G10H2250/571—Waveform compression, adapted for music synthesisers, sound banks or wavetables
    • G10H2250/591—DPCM [delta pulse code modulation]

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Algebra (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Electrophonic Musical Instruments (AREA)
JP49064382A 1974-06-06 1974-06-06 電子楽器の音源波形形成装置 Expired JPS5917433B2 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP49064382A JPS5917433B2 (ja) 1974-06-06 1974-06-06 電子楽器の音源波形形成装置
US05/584,367 US4030395A (en) 1974-06-06 1975-06-05 Musical-tone signal forming apparatus for an electronic musical instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP49064382A JPS5917433B2 (ja) 1974-06-06 1974-06-06 電子楽器の音源波形形成装置

Publications (2)

Publication Number Publication Date
JPS50156420A JPS50156420A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1975-12-17
JPS5917433B2 true JPS5917433B2 (ja) 1984-04-21

Family

ID=13256689

Family Applications (1)

Application Number Title Priority Date Filing Date
JP49064382A Expired JPS5917433B2 (ja) 1974-06-06 1974-06-06 電子楽器の音源波形形成装置

Country Status (2)

Country Link
US (1) US4030395A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS5917433B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4348928A (en) * 1976-09-24 1982-09-14 Kabushiki Kaishi Kawai Gakki Seisakusho Electronic musical instrument
GB2017376B (en) * 1978-03-18 1983-03-16 Casio Computer Co Ltd Electronic musical instrument
FR2473173A1 (en) * 1978-03-18 1981-07-10 Casio Computer Co Ltd Electronic musical instrument with progressive digital counter - has volume control and period counter dividing period into blocks with stages and accumulates volume and tone signals for output loudspeaker

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3515792A (en) * 1967-08-16 1970-06-02 North American Rockwell Digital organ
US3610800A (en) * 1969-10-30 1971-10-05 North American Rockwell Digital electronic keyboard instrument with automatic transposition
NL7210530A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1971-07-31 1973-02-02
US3763364A (en) * 1971-11-26 1973-10-02 North American Rockwell Apparatus for storing and reading out periodic waveforms
US3844379A (en) * 1971-12-30 1974-10-29 Nippon Musical Instruments Mfg Electronic musical instrument with key coding in a key address memory
US3809786A (en) * 1972-02-14 1974-05-07 Deutsch Res Lab Computor organ

Also Published As

Publication number Publication date
US4030395A (en) 1977-06-21
JPS50156420A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1975-12-17

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