EP0024108A3 - Tone generation system for electronic musical instrument - Google Patents

Tone generation system for electronic musical instrument Download PDF

Info

Publication number
EP0024108A3
EP0024108A3 EP80302253A EP80302253A EP0024108A3 EP 0024108 A3 EP0024108 A3 EP 0024108A3 EP 80302253 A EP80302253 A EP 80302253A EP 80302253 A EP80302253 A EP 80302253A EP 0024108 A3 EP0024108 A3 EP 0024108A3
Authority
EP
European Patent Office
Prior art keywords
digital
tone
player
actuation
waveform
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.)
Withdrawn
Application number
EP80302253A
Other languages
German (de)
French (fr)
Other versions
EP0024108A2 (en
Inventor
Thomas Anthony Niezgoda
Carl Paul Oppenheimer
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.)
Wurlitzer Co
Original Assignee
Wurlitzer Co
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 Wurlitzer Co filed Critical Wurlitzer Co
Publication of EP0024108A2 publication Critical patent/EP0024108A2/en
Publication of EP0024108A3 publication Critical patent/EP0024108A3/en
Withdrawn legal-status Critical Current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
    • G10H1/00—Details of electrophonic musical instruments
    • G10H1/02—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos
    • G10H1/04—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos by additional modulation
    • G10H1/053—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos by additional modulation during execution only
    • G10H1/057—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos by additional modulation during execution only by envelope-forming circuits
    • G10H1/0575—Means for controlling the tone frequencies, e.g. attack or decay; Means for producing special musical effects, e.g. vibratos or glissandos by additional modulation during execution only by envelope-forming circuits using a data store from which the envelope is synthesized
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (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)
  • Electrophonic Musical Instruments (AREA)

Abstract

A tone generation system is intended for use with an electronic musical instrument of the type wherein an audible tone is generated electronically in response to actuation of the instrument by a player. The invention generates digital sig­ nals capable of defining either the waveshape or the envelope characteristic of a tone for each tone initiated by such player actuation, the amplitude thereof being varied in accordance with the intensity of the player actuation initiating that tone. To define the amplitude, digital electronic circuits (22) are utilized for developing a digital scaling signal corresponding to the intensity of actuation of the instrument by the player. Other digital circuits develop (10, 18) a digital waveform seg­ ment signals which define portions of a composite waveform, as represented in an orthogonal coordinate system. Further digital circuits (24) arithmetically manipulate these scaling signals and waveform segment signals to give a composite output signal defining the envelope or waveform to be pro­ duced.
EP80302253A 1979-08-17 1980-07-03 Tone generation system for electronic musical instrument Withdrawn EP0024108A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US6742579A 1979-08-17 1979-08-17
US67425 1979-08-17

Publications (2)

Publication Number Publication Date
EP0024108A2 EP0024108A2 (en) 1981-02-25
EP0024108A3 true EP0024108A3 (en) 1981-03-18

Family

ID=22075896

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80302253A Withdrawn EP0024108A3 (en) 1979-08-17 1980-07-03 Tone generation system for electronic musical instrument

Country Status (3)

Country Link
EP (1) EP0024108A3 (en)
JP (1) JPS5630196A (en)
AU (1) AU6008880A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58175695A (en) * 1982-03-29 1983-10-14 Konishiroku Photo Ind Co Ltd Preparation of printing plate
JPS602727A (en) * 1983-06-14 1985-01-09 東レ株式会社 Synthetic fiber yarn having pattern and production thereof
JPS602735A (en) * 1983-06-14 1985-01-09 東レ株式会社 Production of spun-like processed yarn
US6033526A (en) 1994-12-28 2000-03-07 Hercules Incorporated Rosin sizing at neutral to alkaline pH

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3809786A (en) * 1972-02-14 1974-05-07 Deutsch Res Lab Computor organ
US3952623A (en) * 1974-11-12 1976-04-27 Nippon Gakki Seizo Kabushiki Kaisha Digital timing system for an electronic musical instrument
DE2712226A1 (en) * 1976-04-02 1977-10-13 Wurlitzer Co SOUND GENERATOR ARRANGEMENT, IN PARTICULAR FOR AN ELECTRONIC MUSICAL INSTRUMENT
US4133241A (en) * 1975-05-27 1979-01-09 Nippon Gakki Seizo Kabushiki Kaisha Electronic musical instrument utilizing recursive algorithm

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3809786A (en) * 1972-02-14 1974-05-07 Deutsch Res Lab Computor organ
US3952623A (en) * 1974-11-12 1976-04-27 Nippon Gakki Seizo Kabushiki Kaisha Digital timing system for an electronic musical instrument
US4133241A (en) * 1975-05-27 1979-01-09 Nippon Gakki Seizo Kabushiki Kaisha Electronic musical instrument utilizing recursive algorithm
DE2712226A1 (en) * 1976-04-02 1977-10-13 Wurlitzer Co SOUND GENERATOR ARRANGEMENT, IN PARTICULAR FOR AN ELECTRONIC MUSICAL INSTRUMENT

Also Published As

Publication number Publication date
AU6008880A (en) 1981-02-19
EP0024108A2 (en) 1981-02-25
JPS5630196A (en) 1981-03-26

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

PUAL Search report despatched

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AK Designated contracting states

Designated state(s): DE GB IT NL

AK Designated contracting states

Designated state(s): DE GB IT NL

17P Request for examination filed

Effective date: 19810813

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19830327

ITCP It: supplementary protection certificate

Spc suppl protection certif: CCP 151

RIN1 Information on inventor provided before grant (corrected)

Inventor name: NIEZGODA, THOMAS ANTHONY

Inventor name: OPPENHEIMER, CARL PAUL