GB1361032A - Musical instruments - Google Patents

Musical instruments

Info

Publication number
GB1361032A
GB1361032A GB4947271A GB4947271A GB1361032A GB 1361032 A GB1361032 A GB 1361032A GB 4947271 A GB4947271 A GB 4947271A GB 4947271 A GB4947271 A GB 4947271A GB 1361032 A GB1361032 A GB 1361032A
Authority
GB
United Kingdom
Prior art keywords
output
shift register
key
stage
register
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
GB4947271A
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 GB1361032A publication Critical patent/GB1361032A/en
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
    • G10H5/00—Instruments in which the tones are generated by means of electronic generators
    • G10H5/02—Instruments in which the tones are generated by means of electronic generators using generation of basic tones
    • G10H5/06—Instruments in which the tones are generated by means of electronic generators using generation of basic tones tones generated by frequency multiplication or division of a basic tone
    • G10H5/07—Instruments in which the tones are generated by means of electronic generators using generation of basic tones tones generated by frequency multiplication or division of a basic tone resulting in complex waveforms

Landscapes

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

Abstract

1361032 Electrophonic musical instruments WURLITZER CO 25 Oct 1971 [12 Nov 1970] 49472/71 Heading G5J A musical instrument comprises a plurality of key switches connected to means producing a repeating train of pulses, with a repetition rate dependent upon which key is operated, and integrating means connected to the pulse producing means to generate an audio-frequency electric wave corresponding to a musical tone. In one embodiment, Fig. 2, the pulse train is produced by means of a shift register 34 connected to a counter 42, the shift register and counter being driven from the same clock 36. Each key on the keyboard is associated with a respective switch 24 which is connected to one stage of the shift register, each stage of which is connected by a bus 40 to the counter. Upon closing a key switch the shift register shifts to the corresponding stage and the output from that stage of the shift register causes the counter to dump its count on to the line 46. The line 46 is connected through a distributer 48 to a succession of buffer memories 50 the number of buffer memories being dependent upon how many notes it is required to play simultaneously. Each buffer memory is connected to a variable clock 52, the variable clocks being controlled by a master clock, and the output of each variable clock is connected to an N-state register 54. The train of pulses supplied via the distributer passes through the N-state register and the density of pulses is controlled by means of a feedback matrix 56 connected to the register, the feedback pattern itself being controlled by means of a plurality of diode switches 60 and the pattern may be preset to give the desired pulse train at the output of the register. Integrating means 64 connected to the output of the shift register produce an audio-frequency output which is then amplified and connected to a loud-speaker. In a second embodiment, Fig. 7 (not shown), in order to produce the appropriate pulse repetition rate the octave and note position within the octave of each key is represented in digital form, the pulse train being produced by means of a master clock associated with a plurality of gates, the gates being connected to the key switches and the output of said gates being connected to a divider. The output from the divider is then connected to the N-stage shift register as before.
GB4947271A 1970-11-12 1971-10-25 Musical instruments Expired GB1361032A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US8865070A 1970-11-12 1970-11-12

Publications (1)

Publication Number Publication Date
GB1361032A true GB1361032A (en) 1974-07-24

Family

ID=22212600

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4947271A Expired GB1361032A (en) 1970-11-12 1971-10-25 Musical instruments

Country Status (6)

Country Link
US (1) US3696201A (en)
JP (1) JPS55149794U (en)
CA (1) CA944198A (en)
DE (1) DE2152861A1 (en)
GB (1) GB1361032A (en)
IT (1) IT944857B (en)

Families Citing this family (34)

* 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
US3752898A (en) * 1971-04-05 1973-08-14 Kawai Musical Instr Mfg Co Electronic musical instrument
US3808347A (en) * 1971-06-01 1974-04-30 Itt Electronic music tone generator with pulse generator and frequency dividers
US3844379A (en) * 1971-12-30 1974-10-29 Nippon Musical Instruments Mfg Electronic musical instrument with key coding in a key address memory
US3916750A (en) * 1972-02-04 1975-11-04 Baldwin Co D H Electronic organ employing time position multiplexed signals
US3746773A (en) * 1972-02-04 1973-07-17 Baldwin Co D H Electronic organ employing time position multiplexed signals
US3809786A (en) * 1972-02-14 1974-05-07 Deutsch Res Lab Computor organ
US3749837A (en) * 1972-05-02 1973-07-31 J Doughty Electronic musical tone modifier for musical instruments
US3764722A (en) * 1972-06-16 1973-10-09 Conn Ltd C G Automatic rhythm system providing drum break
USRE28999E (en) * 1972-06-16 1976-10-12 C. G. Conn, Ltd. Automatic rhythm system providing drum break
US3809788A (en) * 1972-10-17 1974-05-07 Nippon Musical Instruments Mfg Computor organ using parallel processing
JPS4974924A (en) * 1972-11-17 1974-07-19
US3809789A (en) * 1972-12-13 1974-05-07 Nippon Musical Instruments Mfg Computor organ using harmonic limiting
US3809792A (en) * 1973-01-05 1974-05-07 Nippon Musical Instruments Mfg Production of celeste in a computor organ
US3902397A (en) * 1973-01-12 1975-09-02 Chicago Musical Instr Co Electronic musical instrument with variable amplitude time encoded pulses
US3809790A (en) * 1973-01-31 1974-05-07 Nippon Musical Instruments Mfg Implementation of combined footage stops in a computor organ
US3878750A (en) * 1973-11-21 1975-04-22 Charles A Kapps Programmable music synthesizer
US3915047A (en) * 1974-01-02 1975-10-28 Ibm Apparatus for attaching a musical instrument to a computer
US3929053A (en) * 1974-04-29 1975-12-30 Nippon Musical Instruments Mfg Production of glide and portamento in an electronic musical instrument
US4041826A (en) * 1974-08-07 1977-08-16 Nippon Gakki Seizo Kabushiki Kaisha Electronic musical instrument
JPS5615519B2 (en) * 1974-08-12 1981-04-10
US4188848A (en) * 1975-03-06 1980-02-19 Thomas International Corporation Digital tone and chord generators
US3955460A (en) * 1975-03-26 1976-05-11 C. G. Conn Ltd. Electronic musical instrument employing digital multiplexed signals
US4108038A (en) * 1975-04-04 1978-08-22 Nippon Gakki Seizo Kabushiki Kaisha Time shared tone keying system in electronic musical instrument
US4046047A (en) * 1975-08-11 1977-09-06 Warwick Electronics Inc. Note selector circuit for electronic musical instrument
US4140039A (en) * 1976-04-12 1979-02-20 Faulkner Alfred H Hand held synthesizer
JPS5827516B2 (en) * 1977-07-30 1983-06-09 ヤマハ株式会社 electronic musical instruments
CA1095752A (en) * 1977-09-12 1981-02-17 Osamu Hamada Tone generator for electrical music instrument
US4319508A (en) * 1978-06-20 1982-03-16 The Wurlitzer Company Modular, expandable digital organ system
US4254682A (en) * 1978-06-20 1981-03-10 The Wurlitzer Company Production of chord notes in a digital organ
US4253366A (en) * 1978-06-20 1981-03-03 The Wurlitzer Company Large scale integrated circuit chip for an electronic organ
DE2948769A1 (en) * 1979-12-04 1981-06-11 Siemens AG, 1000 Berlin und 8000 München DIGITAL SEMICONDUCTOR CIRCUIT FOR AN ELECTRONIC ORGAN
US4338843A (en) * 1980-01-11 1982-07-13 Allen Organ Co. Asynchronous interface for electronic musical instrument with multiplexed note selection
DE3025643A1 (en) * 1980-07-07 1982-02-04 Siemens AG, 1000 Berlin und 8000 München DIGITAL SEMICONDUCTOR CIRCUIT FOR AN ELECTRONIC ORGAN

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3515039A (en) * 1964-01-29 1970-06-02 Matsushita Electric Ind Co Ltd Electronic musical instruments with tone generating,mixing,and distributing systems
US3450825A (en) * 1965-11-26 1969-06-17 Baldwin Co D H Celeste system for a locked-octave electronic organ
US3505461A (en) * 1965-12-20 1970-04-07 Matsushita Electric Ind Co Ltd Electronic musical instrument for producing novel acoustic effects from multitone signals
DE1547588C3 (en) * 1966-06-30 1974-07-25 N.V. Philips' Gloeilampenfabrieken, Eindhoven (Niederlande) Method for the preservation of tones of an equal tempered scale
US3515792A (en) * 1967-08-16 1970-06-02 North American Rockwell Digital organ
US3590131A (en) * 1969-02-11 1971-06-29 Robert R Reyers Electronic musical scale generator employing a single master oscillator
US3562395A (en) * 1969-07-02 1971-02-09 Richard H Peterson Monophonic musical tone system with single keyed oscillator, pedal clavier, and percussion arrangement
US3610806A (en) * 1969-10-30 1971-10-05 North American Rockwell Adaptive sustain system for digital electronic organ
US3610801A (en) * 1970-02-16 1971-10-05 Triadex Inc Digital music synthesizer

Also Published As

Publication number Publication date
US3696201A (en) 1972-10-03
JPS55149794U (en) 1980-10-28
DE2152861A1 (en) 1972-05-18
CA944198A (en) 1974-03-26
IT944857B (en) 1973-04-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee