FR2451669A1 - Dispositif de traitement de la forme d'un signal periodique et application notamment a un instrument de musique electronique - Google Patents

Dispositif de traitement de la forme d'un signal periodique et application notamment a un instrument de musique electronique

Info

Publication number
FR2451669A1
FR2451669A1 FR7906749A FR7906749A FR2451669A1 FR 2451669 A1 FR2451669 A1 FR 2451669A1 FR 7906749 A FR7906749 A FR 7906749A FR 7906749 A FR7906749 A FR 7906749A FR 2451669 A1 FR2451669 A1 FR 2451669A1
Authority
FR
France
Prior art keywords
counter
pilot frequency
signal processor
intervals
musical instrument
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
FR7906749A
Other languages
English (en)
Other versions
FR2451669B1 (fr
Inventor
Dominique Bouteaud
Jean-Pierre Moreau
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 FR7906749A priority Critical patent/FR2451669A1/fr
Priority to IT8012479A priority patent/IT1136153B/it
Publication of FR2451669A1 publication Critical patent/FR2451669A1/fr
Application granted granted Critical
Publication of FR2451669B1 publication Critical patent/FR2451669B1/fr
Granted 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/02—Generating pulses having essentially a finite slope or stepped portions having stepped portions, e.g. staircase waveform
    • H03K4/026—Generating pulses having essentially a finite slope or stepped portions having stepped portions, e.g. staircase waveform using digital techniques

Landscapes

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

Abstract

LA PRESENTE INVENTION A POUR OBJET UN DISPOSITIF DE TRAITEMENT DE LA FORME D'UN SIGNAL PERIODIQUE. IL COMPORTE PRINCIPALEMENT:-UN COMPTEUR A CYCLES PERTURBES C, RECEVANT UNE FREQUENCE PILOTE F ET PERMETTANT DE COMPTER A CHACUN DE SES CYCLES UN NOMBRE P OU P A DE PERIODES DE LA FREQUENCE PILOTE F;-UNE MEMOIRE B DANS LAQUELLE SONT STOCKEES LES VALEURS DU NOMBRE P, FOURNISSANT CES DERNIERES AU COMPTEUR PRECEDENT C;-UN COMPTEUR AUXILIAIRE C, MODULO M, RELIE AU COMPTEUR C ET FOURNISSANT A LA FOIS LA FREQUENCE F DU SIGNAL RECHERCHE DANS UNE OCTAVE DE REFERENCE, LA PERIODE T CORRESPONDANT A F ETANT EGALE A LA DUREE DE M CYCLES, ET UNE INFORMATION DE CONTROLE M;-DES MOYENS DE COMMANDE C DU COMPTEUR C, RECEVANT L'INFORMATION DE CONTROLE M ET ASSURANT LE CHOIX ENTRE LES NOMBRES P ET P . L'INVENTION EST NOTAMMENT APPLICABLE AUX INSTRUMENTS DE MUSIQUE ELECTRONIQUES.
FR7906749A 1979-03-16 1979-03-16 Dispositif de traitement de la forme d'un signal periodique et application notamment a un instrument de musique electronique Granted FR2451669A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7906749A FR2451669A1 (fr) 1979-03-16 1979-03-16 Dispositif de traitement de la forme d'un signal periodique et application notamment a un instrument de musique electronique
IT8012479A IT1136153B (it) 1979-03-16 1980-03-14 Dispositivo di trattamento della forma di un segnale per periodico ed applicazione in particolare ad uno strumento di musica elettronico

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7906749A FR2451669A1 (fr) 1979-03-16 1979-03-16 Dispositif de traitement de la forme d'un signal periodique et application notamment a un instrument de musique electronique

Publications (2)

Publication Number Publication Date
FR2451669A1 true FR2451669A1 (fr) 1980-10-10
FR2451669B1 FR2451669B1 (fr) 1982-09-03

Family

ID=9223217

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7906749A Granted FR2451669A1 (fr) 1979-03-16 1979-03-16 Dispositif de traitement de la forme d'un signal periodique et application notamment a un instrument de musique electronique

Country Status (2)

Country Link
FR (1) FR2451669A1 (fr)
IT (1) IT1136153B (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2122188A5 (fr) * 1971-01-12 1972-08-25 Lucas Industries Ltd
US3818354A (en) * 1971-11-12 1974-06-18 Nippon Musical Instruments Mfg Pulse frequency dividing circuit
US3824379A (en) * 1971-12-30 1974-07-16 Nippon Gakki Siezo Kk Variable frequency dividing circuit
US3959737A (en) * 1974-11-18 1976-05-25 Engelmann Microwave Co. Frequency synthesizer having fractional frequency divider in phase-locked loop
US4084082A (en) * 1976-10-12 1978-04-11 Fairchild Camera And Instrument Corporation Programmable counter

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2122188A5 (fr) * 1971-01-12 1972-08-25 Lucas Industries Ltd
US3818354A (en) * 1971-11-12 1974-06-18 Nippon Musical Instruments Mfg Pulse frequency dividing circuit
US3824379A (en) * 1971-12-30 1974-07-16 Nippon Gakki Siezo Kk Variable frequency dividing circuit
US3959737A (en) * 1974-11-18 1976-05-25 Engelmann Microwave Co. Frequency synthesizer having fractional frequency divider in phase-locked loop
US4084082A (en) * 1976-10-12 1978-04-11 Fairchild Camera And Instrument Corporation Programmable counter

Non-Patent Citations (1)

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

Also Published As

Publication number Publication date
FR2451669B1 (fr) 1982-09-03
IT8012479A0 (it) 1980-03-14
IT1136153B (it) 1986-08-27

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Legal Events

Date Code Title Description
ST Notification of lapse