ES8102389A1 - Un dispositivo sintetizador digital polifonico de senales periodicas - Google Patents

Un dispositivo sintetizador digital polifonico de senales periodicas

Info

Publication number
ES8102389A1
ES8102389A1 ES492433A ES492433A ES8102389A1 ES 8102389 A1 ES8102389 A1 ES 8102389A1 ES 492433 A ES492433 A ES 492433A ES 492433 A ES492433 A ES 492433A ES 8102389 A1 ES8102389 A1 ES 8102389A1
Authority
ES
Spain
Prior art keywords
amplitude
synthesizer
value
current amplitude
control means
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
ES492433A
Other languages
English (en)
Other versions
ES492433A0 (es
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.)
DEFOREIT JACQUES CH
Original Assignee
DEFOREIT JACQUES CH
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 DEFOREIT JACQUES CH filed Critical DEFOREIT JACQUES CH
Publication of ES8102389A1 publication Critical patent/ES8102389A1/es
Publication of ES492433A0 publication Critical patent/ES492433A0/es
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
    • 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
    • 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
    • G10H2210/00—Aspects or methods of musical processing having intrinsic musical character, i.e. involving musical theory or musical parameters or relying on musical knowledge, as applied in electrophonic musical tools or instruments
    • G10H2210/155—Musical effects
    • G10H2210/195—Modulation effects, i.e. smooth non-discontinuous variations over a time interval, e.g. within a note, melody or musical transition, of any sound parameter, e.g. amplitude, pitch, spectral response, playback speed
    • G10H2210/201—Vibrato, i.e. rapid, repetitive and smooth variation of amplitude, pitch or timbre within a note or chord
    • G10H2210/205—Amplitude vibrato, i.e. repetitive smooth loudness variation without pitch change or rapid repetition of the same note, bisbigliando, amplitude tremolo, tremulants
    • 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
    • G10H2250/131—Mathematical functions for musical analysis, processing, synthesis or composition
    • G10H2250/161—Logarithmic functions, scaling or conversion, e.g. to reflect human auditory perception of loudness or frequency

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Algebra (AREA)
  • Mathematical Analysis (AREA)
  • Multimedia (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

DISPOSITIVO SINTETIZADOR POLIFONICO DE SEÑALES PERIODICAS ANALOGICAS A PARTIR DE SEÑALES DIGITALES. DESDE EL TECLADO VIRTUAL (2), QUE ES UN CONJUNTO DE BLOQUES DE MEMORIA, SE SELECCIONAN LOS PARAMETROS DIGITALES QUE PRODUCEN LA SEÑAL PERIODICA, CON LAS FRECUENCIAS Y AMPLITUDES REQUERIDAS. LA SELECCION DE LOS BLOQUES SE REALIZA POR UN REGISTRO DE DIRECCIONES (3), RENOVANDOSE ESTAS AL RITMO DE UN GENERADOR DE RELOJ (5), DETERMINANDO LA FRECUENCIA DE RECURRENCIA DE LECTURA DE BLOQUES. LOS CONJUNTOS DE GENERADORES (7, 8) DETERMINAN LAS FRECUENCIAS Y VELOCIDAD DE VARIACION DE AMPLITUD DE LAS SEÑALES ELEMENTALES. UN CIRCUITO DE CALCULO (20) REALIZA INDISTINTAMENTE EL INCREMENTO Y LA MEMORIZACION DE LA FASE O LA ACTUALIZACION DE LA AMPLITUD FINAL. LAS SEÑALES TRATADAS VAN AL EXTERIOR POR LAS SALIDAS (26), PREVISTAS PARA CONECTAR A AMPLIFICADORES, DEL CIRCUITO DESMULTIPLEXADOR (25).
ES492433A 1979-06-15 1980-06-13 Un dispositivo sintetizador digital polifonico de senales periodicas Granted ES492433A0 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7915337A FR2459524A1 (fr) 1979-06-15 1979-06-15 Synthetiseur numerique polyphonique de signaux periodiques et instrument de musique comportant un tel synthetiseur

Publications (2)

Publication Number Publication Date
ES8102389A1 true ES8102389A1 (es) 1980-12-16
ES492433A0 ES492433A0 (es) 1980-12-16

Family

ID=9226648

Family Applications (1)

Application Number Title Priority Date Filing Date
ES492433A Granted ES492433A0 (es) 1979-06-15 1980-06-13 Un dispositivo sintetizador digital polifonico de senales periodicas

Country Status (8)

Country Link
US (1) US4344343A (es)
EP (1) EP0021964B1 (es)
JP (1) JPS5632191A (es)
AT (1) ATE7744T1 (es)
DE (1) DE3068012D1 (es)
ES (1) ES492433A0 (es)
FR (1) FR2459524A1 (es)
NO (1) NO801774L (es)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2106694B (en) 1981-04-30 1985-05-30 Casio Computer Co Ltd Digital electronic musical instrument
GB2113447B (en) * 1981-12-22 1986-07-09 Casio Computer Co Ltd Tone signal generating apparatus of electronic musical instruments
JPH0795235B2 (ja) * 1983-10-27 1995-10-11 株式会社河合楽器製作所 電子楽器
US4549459A (en) * 1984-04-06 1985-10-29 Kawai Musical Instrument Mfg. Co., Ltd. Integral and a differential waveshape generator for an electronic musical instrument
JPS60254097A (ja) * 1984-05-30 1985-12-14 カシオ計算機株式会社 歪波形発生装置
US4776964A (en) * 1984-08-24 1988-10-11 William F. McLaughlin Closed hemapheresis system and method
DE3650389T2 (de) * 1985-04-12 1996-03-07 Yamaha Corp Tonsignalerzeugungsvorrichtung.
US4677889A (en) * 1985-10-25 1987-07-07 Kawai Musical Instrument Mfg. Co., Ltd. Harmonic interpolation for producing time variant tones in an electronic musical instrument
SE469576B (sv) * 1992-03-17 1993-07-26 Televerket Foerfarande och anordning foer talsyntes

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3610806A (en) * 1969-10-30 1971-10-05 North American Rockwell Adaptive sustain system for digital electronic organ
US4036096A (en) * 1974-07-11 1977-07-19 Nippon Gakki Seizo Kabushiki Kaisha Musical tone waveshape generator
JPS5441497B2 (es) * 1974-11-14 1979-12-08
JPS6134160B2 (es) * 1974-12-27 1986-08-06 Kawai Musical Instr Mfg Co
US4023454A (en) * 1975-08-28 1977-05-17 Kabushiki Kaisha Dawai Gakki Seisakusho Tone source apparatus for an electronic musical instrument
FR2344907A1 (fr) * 1976-03-16 1977-10-14 Deforeit Christian Instrument de musique electronique polyphonique
JPS6042953B2 (ja) * 1976-12-29 1985-09-25 ヤマハ株式会社 電子楽器用ウエイブジエネレ−タ
FR2396375A1 (fr) * 1977-07-01 1979-01-26 Deforeit Christian Synthetiseur polyphonique de signaux periodiques et instrument de musique electronique comportant un tel synthetiseur
US4205575A (en) * 1978-05-19 1980-06-03 The Wurlitzer Company Binary interpolator for electronic musical instrument
US4245541A (en) * 1979-06-01 1981-01-20 Kawai Musical Instrument Mfg. Co., Ltd. Apparatus for reducing noise in digital to analog conversion

Also Published As

Publication number Publication date
EP0021964B1 (fr) 1984-05-30
DE3068012D1 (en) 1984-07-05
US4344343A (en) 1982-08-17
FR2459524A1 (fr) 1981-01-09
JPS5632191A (en) 1981-04-01
ES492433A0 (es) 1980-12-16
FR2459524B1 (es) 1984-11-09
ATE7744T1 (de) 1984-06-15
NO801774L (no) 1980-12-16
EP0021964A1 (fr) 1981-01-07

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