FR2447112A1 - Dispositif de traitement de la frequence d'un signal et application notamment aux instruments de musique electroniques - Google Patents

Dispositif de traitement de la frequence d'un signal et application notamment aux instruments de musique electroniques

Info

Publication number
FR2447112A1
FR2447112A1 FR7901512A FR7901512A FR2447112A1 FR 2447112 A1 FR2447112 A1 FR 2447112A1 FR 7901512 A FR7901512 A FR 7901512A FR 7901512 A FR7901512 A FR 7901512A FR 2447112 A1 FR2447112 A1 FR 2447112A1
Authority
FR
France
Prior art keywords
octave
dividers
memory
musical instrument
signal 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
FR7901512A
Other languages
English (en)
Other versions
FR2447112B1 (fr
Inventor
Jean-Pierre Moreau
Dominique Bouteaud
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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR7901512A priority Critical patent/FR2447112A1/fr
Priority to IT12415/80A priority patent/IT1136105B/it
Publication of FR2447112A1 publication Critical patent/FR2447112A1/fr
Application granted granted Critical
Publication of FR2447112B1 publication Critical patent/FR2447112B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
    • H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
    • H03J5/0245—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form
    • H03J5/0272—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form the digital values being used to preset a counter or a frequency divider in a phase locked loop, e.g. frequency synthesizer
    • H03J5/0281—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form the digital values being used to preset a counter or a frequency divider in a phase locked loop, e.g. frequency synthesizer the digital values being held in an auxiliary non erasable memory
    • 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
    • G10H1/18—Selecting circuits
    • G10H1/182—Key multiplexing

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Electrophonic Musical Instruments (AREA)

Abstract

L'invention a pour objet un dispositif de traitement de la fréquence d'un signal. Il comporte principalement : - un oscillateur pilote O fournissant une fréquence F; - un compteur programmable C N permettant de compter un nombre N de période de l'oscillateur O, fournissant une fréquence F/N; - une mémoire morte M dans laquelle sont stockées les valeurs du nombre N correspondant aux fréquences désirées. Cette mémoire M fournit sur commande du clavier de l'instrument le nombre N au compteur programmable CN . L'invention est notammennt applicable aux instruments de musique électroniques.
FR7901512A 1979-01-22 1979-01-22 Dispositif de traitement de la frequence d'un signal et application notamment aux instruments de musique electroniques Granted FR2447112A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7901512A FR2447112A1 (fr) 1979-01-22 1979-01-22 Dispositif de traitement de la frequence d'un signal et application notamment aux instruments de musique electroniques
IT12415/80A IT1136105B (it) 1979-01-22 1980-01-21 Dispositivo di trattamento della frequenza di un segnale ed applicazione in particolare agli strumenti di musica elettronici

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7901512A FR2447112A1 (fr) 1979-01-22 1979-01-22 Dispositif de traitement de la frequence d'un signal et application notamment aux instruments de musique electroniques

Publications (2)

Publication Number Publication Date
FR2447112A1 true FR2447112A1 (fr) 1980-08-14
FR2447112B1 FR2447112B1 (fr) 1983-07-18

Family

ID=9221021

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7901512A Granted FR2447112A1 (fr) 1979-01-22 1979-01-22 Dispositif de traitement de la frequence d'un signal et application notamment aux instruments de musique electroniques

Country Status (2)

Country Link
FR (1) FR2447112A1 (fr)
IT (1) IT1136105B (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3610805A (en) * 1969-10-30 1971-10-05 North American Rockwell Attack and decay system for a digital electronic organ
US3854366A (en) * 1974-04-26 1974-12-17 Nippon Musical Instruments Mfg Automatic arpeggio
US3882400A (en) * 1972-11-27 1975-05-06 Sony Corp Broadcast receiver
US3971992A (en) * 1973-12-28 1976-07-27 Trio Electronics Incorporated Apparatus for presetting receivers of the synthesizing type
US4085645A (en) * 1976-10-29 1978-04-25 Motorola, Inc. Instantly retunable tone generator for an electronic musical instrument

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3610805A (en) * 1969-10-30 1971-10-05 North American Rockwell Attack and decay system for a digital electronic organ
US3882400A (en) * 1972-11-27 1975-05-06 Sony Corp Broadcast receiver
US3971992A (en) * 1973-12-28 1976-07-27 Trio Electronics Incorporated Apparatus for presetting receivers of the synthesizing type
US3854366A (en) * 1974-04-26 1974-12-17 Nippon Musical Instruments Mfg Automatic arpeggio
US4085645A (en) * 1976-10-29 1978-04-25 Motorola, Inc. Instantly retunable tone generator for an electronic musical instrument

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
EXBK/69 *
EXBK/71 *
EXBK/77 *

Also Published As

Publication number Publication date
FR2447112B1 (fr) 1983-07-18
IT8012415A0 (it) 1980-01-21
IT1136105B (it) 1986-08-27

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Legal Events

Date Code Title Description
ST Notification of lapse