GB1440488A - Electronic musical instrument - Google Patents
Electronic musical instrumentInfo
- Publication number
- GB1440488A GB1440488A GB5805773A GB5805773A GB1440488A GB 1440488 A GB1440488 A GB 1440488A GB 5805773 A GB5805773 A GB 5805773A GB 5805773 A GB5805773 A GB 5805773A GB 1440488 A GB1440488 A GB 1440488A
- Authority
- GB
- United Kingdom
- Prior art keywords
- key
- signal
- memory
- memories
- notes
- 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
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
- G10H7/02—Instruments in which the tones are synthesised from a data store, e.g. computer organs in which amplitudes at successive sample points of a tone waveform are stored in one or more memories
- G10H7/04—Instruments in which the tones are synthesised from a data store, e.g. computer organs in which amplitudes at successive sample points of a tone waveform are stored in one or more memories in which amplitudes are read at varying rates, e.g. according to pitch
Abstract
1440488 Electrophonic musical instruments NIPPON GAKKI SEIZO KK 13 Dec 1973 [14 Dec 1972 (4) 13 April 1973 6 July 1973 (2)] 58057/73 Heading G5J In a computer organ, in which a key assigner produces a key address code to control a tone waveform generator and key depression and release control signals to control an envelope waveform generator the outputs of the waveform generators being multiplied together, the assigner, waveform generators and multiplier have synchronously driven shift-registers to enable the waveforms of a plurality of simultaneously played notes to be computed in a time-sharing manner. General organization of the organ.-The keys in keyboards 1 have first contacts 1a which break at the beginning of key actuation and second contacts 1b which make on complete actuation. All the key switches are scanned sequentially with a stepping rate of 12 Ás by a key data signal generator 2 which generates first and second signals on operation of the first and second switch contacts respectively at a time-slot in the scanning cycle corresponding to the identity of the actuated key. The key assigner 3 receives the first and second signals and, operating in synchronism with the scanning, applies a binary digital tone code to a frequency information memory 4. The key assigner may allot notes to channels in the circuitry or in a modification, there may be one channel reserved for pedal tones. Key assigner 3 also produces a signal TRS representing the time delay between the operation of the first and second switch contacts and hence the touch on the key, a signal ES when the second contact closes to initiate attack, a signal DIS when the second contact opens to initiate decay, and a signal PES to provide percussion effects when DIS follows ES rapidly. Counters P1C, P2C and EC read envelope shapes from analogue memories P1M1, P1M2, P1M3, P2M1, P2M2, P2M3, E1M1, E1M2, E1M3 which are applied to modify the wave shapes produced by the analogue tone wave shape memories 6a-6e through a buffer BF. The envelope amplitude is controlled by a memory TRM selectively read by a counter TRC enabled by the touch responsive signal TRS. Wave shape memories 6a-6e also receive signals from the frequency information memory 4 to determine the spacing of the samples read out from the memories and hence the tone frequency produced. The logic circuits of the key assigner are described, Fig. 9 (not shown). Key data signal generator (Fig. 3).-The instrument has in general four keyboards (three manual and one pedal) each divided in general into four blocks, each block having in general sixteen keys. A key address code is generated by an 8-stage binary counter KAG1 driven a 12 Ás clock #2. Digits K1K2 represent the keyboard, B1B2 the block and N1N2N3N4 the key within the block. The outputs of a digital to individual decoder D1 are connected to corresponding break contacts S4K3 &c. of each block. The common bus, e.g. S4B of each block is connected via one of the AND gates Y0-Y13 which are opened in sequence by a decoder D2 and OR gates OR1, OR2 to the output where any open contact shows as a first key signal. A delay circuit DF acts as a waveshaper by detecting the key signal during one scanning time slot in which it rises gradually and transmitting it as a good rectangular pulse in the next time slot. The logic is designed to cope with any keys of blocks of keys which are not provided in any particular organ and also to eliminate the effect of contact chatter, Figs. 7A, 7B (not shown). A similar arrangement is used to generate the second key signal, Fig. 4 (not shown). Generation of the envelope (Fig. 13).-When the signal to start attack ES is received on terminal TE1, pulses from attack clock AP are applied to a counter comprising an adder AD4 and shift-register SR4. The increasing count reads out successive analogue samples from memory EM until the end of the attack period indicated by a signal from OR gate OR31 which blocks the passage of attack pulses through gate A81. The envelope amplitude is then sustained at this value until the decay start signal DIS on terminal TE2 opens gate A82 for the passage of pulses from decay clock DP. Counting continues until the decay waveshape has been read out of memory EM whereupon note finish signal from gate A80 closes both gates A81, A82 and initiates a clear signal CC from the key assigner to clear the circuits of the organ of that note. If a further key is operated while 12 notes are already sounding the key assigner detects whether any of the notes are decaying, and if so the decay of the most decayed note is accelerated by a "truncate" counter b in Fig. 13 so that this note may be replaced by the new note. Percussion counters P1C, P2C and the touch responsive counter TRC and their associated memories operate in a manner similar to the envelope counter EC and memory EM. Tone frequency generation (Fig. 10).-At each address in the memory 4 defined by the code K2, K1, B2, B1, N4, N3, N2, N1 is stored a 15- digit binary number n 1 -n 15 representing the corresponding frequency. The number n 1 -n 15 is applied to adders AD1-AD3 and put in the first stage of shift registers SR1-SR3 which have 12 bits so as to be able to deal with 12 notes at once. The number is stepped through registers SR1-SR3 and numbers are added corresponding to other notes by a 1 Ás clock # 1 . Every 12 Ás a number in SR1-SR3 reappears and is added to the same number n 1 -n 15 from memory 4 and replaced in the first stage of SR1-SR3. Thus a number in a given stage of SR1-SR3 increases in 12 Ás steps thus: (n 1 - n 15 ), 2(n 1 -n 15 ), 3(n 1 -n 15 ) .... The number in the most significant shift register SR3 is used to read out analoque samples from tone waveform memories 6a-6c. The sampling number may be reduced when dealing with high frequencies so that the highest harmonic concerned does not approach the sampling frequency too closely. In an alternative logic system the key address code is held in a memory and the frequency information is read from a lower speed read only memory during the 12 Ás period between the time-slots of a given channel, the information being added in the later channel slot. Chorus effect may be achieved by providing a plurality of frequency information memories with slightly differing information in each. These may be used in parallel for all notes, Fig. 23 (not shown) or each assigned to a par. ticular keyboard Fig. 24 (not shown). In another system Figs 25 and 26 (not shown) an adder alters the information from the memory 4 and the altered and unaltered values are applied to separate counters 5 and memories 6. The numbers may be altered by a fixed number or a by a proportion 2<SP>-n</SP> of themselves. Reference has been directed by the Comptroller to Specifications 1,312,161, 1,312,162, and 1,317,385.
Applications Claiming Priority (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP47125516A JPS5231732B2 (en) | 1972-12-14 | 1972-12-14 | |
JP47125513A JPS5231729B2 (en) | 1972-12-14 | 1972-12-14 | |
JP47125515A JPS5231731B2 (en) | 1972-12-14 | 1972-12-14 | |
JP47125514A JPS5231730B2 (en) | 1972-12-14 | 1972-12-14 | |
JP48041964A JPS5246088B2 (en) | 1973-04-13 | 1973-04-13 | |
JP48076398A JPS5246091B2 (en) | 1973-07-06 | 1973-07-06 | |
JP48076397A JPS5246090B2 (en) | 1973-07-06 | 1973-07-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1440488A true GB1440488A (en) | 1976-06-23 |
Family
ID=27564540
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5805773A Expired GB1440488A (en) | 1972-12-14 | 1973-12-13 | Electronic musical instrument |
Country Status (7)
Country | Link |
---|---|
US (1) | US3882751A (en) |
AU (1) | AU472638B2 (en) |
CA (1) | CA985536A (en) |
DE (1) | DE2362037C3 (en) |
GB (1) | GB1440488A (en) |
IT (1) | IT1000838B (en) |
NL (1) | NL168978C (en) |
Families Citing this family (84)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3978755A (en) * | 1974-04-23 | 1976-09-07 | Allen Organ Company | Frequency separator for digital musical instrument chorus effect |
US3979989A (en) * | 1974-05-31 | 1976-09-14 | Nippon Gakki Seizo Kabushiki Kaisha | Electronic musical instrument |
US3979996A (en) * | 1974-05-31 | 1976-09-14 | Nippon Gakki Seizo Kabushiki Kaisha | Electronic musical instrument |
US4036096A (en) * | 1974-07-11 | 1977-07-19 | Nippon Gakki Seizo Kabushiki Kaisha | Musical tone waveshape generator |
US4022097A (en) * | 1974-07-15 | 1977-05-10 | Strangio Christopher E | Computer-aided musical apparatus and method |
US4041826A (en) * | 1974-08-07 | 1977-08-16 | Nippon Gakki Seizo Kabushiki Kaisha | Electronic musical instrument |
JPS5615519B2 (en) * | 1974-08-12 | 1981-04-10 | ||
US4014238A (en) * | 1974-08-13 | 1977-03-29 | C.G. Conn, Ltd. | Tone signal waveform control network for musical instrument keying system |
US4134320A (en) * | 1974-08-19 | 1979-01-16 | Nippon Gakki Seizo Kabushiki Kaisha | Key assigner for use in electronic musical instrument |
JPS5651632B2 (en) * | 1974-09-17 | 1981-12-07 | ||
US3951030A (en) * | 1974-09-26 | 1976-04-20 | Nippon Gakki Seizo Kabushiki Kaisha | Implementation of delayed vibrato in a computor organ |
US4083285A (en) * | 1974-09-27 | 1978-04-11 | Nippon Gakki Seizo Kabushiki Kaisha | Electronic musical instrument |
US4033219A (en) * | 1975-02-27 | 1977-07-05 | Nippon Gakki Seizo Kabushiki Kaisha | Touch responsive control system for a keyboard electronic musical instrument |
US3959604A (en) * | 1975-04-07 | 1976-05-25 | International Business Machines Corporation | Digital calling signal tone generating circuitry |
GB1543958A (en) * | 1975-04-23 | 1979-04-11 | Nippon Musical Instruments Mfg | Electronic musical instrument |
GB1558280A (en) * | 1975-07-03 | 1979-12-19 | Nippon Musical Instruments Mfg | Electronic musical instrument |
US4031786A (en) * | 1975-08-11 | 1977-06-28 | Warwick Electronics Inc. | Tone selector circuit with multiplexed tone data transfer |
GB1555980A (en) * | 1975-08-20 | 1979-11-14 | Nippon Musical Instruments Mfg | Channel processor |
NL188547C (en) * | 1975-08-20 | 1992-07-16 | Nippon Musical Instruments Mfg | ELECTRONIC MUSIC INSTRUMENT. |
USRE31931E (en) * | 1975-08-20 | 1985-07-02 | Nippon Gakki Seizo Kabushiki Kaisha | Channel processor |
JPS5237032A (en) * | 1975-09-17 | 1977-03-22 | Nippon Gakki Seizo Kk | Electronical music instrument |
JPS5952434B2 (en) * | 1975-09-29 | 1984-12-19 | ヤマハ株式会社 | electronic musical instruments |
US4166405A (en) * | 1975-09-29 | 1979-09-04 | Nippon Gakki Seizo Kabushiki Kaisha | Electronic musical instrument |
US4022098A (en) * | 1975-10-06 | 1977-05-10 | Ralph Deutsch | Keyboard switch detect and assignor |
JPS597118B2 (en) * | 1976-03-05 | 1984-02-16 | ヤマハ株式会社 | electronic musical instruments |
US4067253A (en) * | 1976-04-02 | 1978-01-10 | The Wurlitzer Company | Electronic tone-generating system |
JPS52121313A (en) * | 1976-04-06 | 1977-10-12 | Nippon Gakki Seizo Kk | Electronic musical instrument |
US4140039A (en) * | 1976-04-12 | 1979-02-20 | Faulkner Alfred H | Hand held synthesizer |
JPS6034758B2 (en) * | 1976-04-26 | 1985-08-10 | 株式会社河合楽器製作所 | key assigner |
JPS5828598B2 (en) * | 1976-07-02 | 1983-06-16 | 株式会社河合楽器製作所 | Envelope waveform generator |
US4463647A (en) * | 1976-08-16 | 1984-08-07 | Melville Clark, Jr. | Musical instrument |
US4177706A (en) * | 1976-09-08 | 1979-12-11 | Greenberger Alan J | Digital real time music synthesizer |
US4348928A (en) * | 1976-09-24 | 1982-09-14 | Kabushiki Kaishi Kawai Gakki Seisakusho | Electronic musical instrument |
US4176577A (en) * | 1976-10-30 | 1979-12-04 | Nippon Gakki Seizo Kabushiki Kaisha | Electronic musical instrument of waveshape memory reading type |
US4184402A (en) * | 1976-12-27 | 1980-01-22 | Kabushiki Kaisha Kawai Gakki Seisakusho | Electronic musical instrument |
US4387617A (en) * | 1976-12-29 | 1983-06-14 | Nippon Gakki Seizo Kabushiki Kaisha | Assigner for electronic musical instrument |
US4114496A (en) * | 1977-01-10 | 1978-09-19 | Kawai Musical Instrument Mfg. Co., Ltd. | Note frequency generator for a polyphonic tone synthesizer |
JPS53106023A (en) | 1977-02-26 | 1978-09-14 | Nippon Gakki Seizo Kk | Electronic musical instrument |
US4173164A (en) * | 1977-06-01 | 1979-11-06 | Nippon Gakki Seizo Kabushiki Kaisha | Electronic musical instrument with frequency modulation of a tone signal with an audible frequency signal |
JPS542710A (en) * | 1977-06-08 | 1979-01-10 | Nippon Gakki Seizo Kk | Single tone priority selector of electronic musical instruments |
US4214500A (en) * | 1977-06-10 | 1980-07-29 | Nippon Gakki Seizo Kabushiki Kaisha | Electronic musical instruments |
US4240316A (en) * | 1977-06-17 | 1980-12-23 | Kabushiki Kaisha Kawai Gakki Seisakusho | Keyboard type electronic musical instrument |
US4228403A (en) * | 1977-06-17 | 1980-10-14 | Nippon Gakki Seizo Kabushiki Kaisha | Submultiple-related-frequency wave generator |
FR2396375A1 (en) * | 1977-07-01 | 1979-01-26 | Deforeit Christian | POLYPHONIC SYNTHESIZER OF PERIODIC SIGNALS AND ELECTRONIC MUSICAL INSTRUMENT INCLUDING SUCH A SYNTHESIZER |
JPS5919356B2 (en) * | 1977-10-26 | 1984-05-04 | ヤマハ株式会社 | electronic musical instruments |
JPS5494316A (en) * | 1978-01-10 | 1979-07-26 | Nippon Gakki Seizo Kk | Electronic musical instrument |
JPS54109823A (en) * | 1978-02-17 | 1979-08-28 | Nippon Gakki Seizo Kk | Electronic musical instrument |
US4194426A (en) * | 1978-03-13 | 1980-03-25 | Kawai Musical Instrument Mfg. Co. Ltd. | Echo effect circuit for an electronic musical instrument |
JPS54121722A (en) * | 1978-03-14 | 1979-09-21 | Casio Comput Co Ltd | Musical tone assignment system in electronic musical instruments |
DE2954066C2 (en) * | 1978-03-18 | 1985-09-26 | Casio Computer Co., Ltd., Tokio/Tokyo | Electronic musical instrument |
DE2954065C2 (en) * | 1978-03-18 | 1985-09-19 | Casio Computer Co., Ltd., Tokio/Tokyo | Electronic musical instrument |
GB2017376B (en) | 1978-03-18 | 1983-03-16 | Casio Computer Co Ltd | Electronic musical instrument |
US4201105A (en) * | 1978-05-01 | 1980-05-06 | Bell Telephone Laboratories, Incorporated | Real time digital sound synthesizer |
DE2826429B2 (en) * | 1978-06-16 | 1981-07-16 | Rainer Josef 8047 Karlsfeld Gallitzendörfer | Electronic keyboard instrument |
US4205580A (en) * | 1978-06-22 | 1980-06-03 | Kawai Musical Instrument Mfg. Co. Ltd. | Ensemble effect in an electronic musical instrument |
CA1126992A (en) * | 1978-09-14 | 1982-07-06 | Toshio Kashio | Electronic musical instrument |
DE2936935A1 (en) * | 1978-09-14 | 1980-04-24 | Nippon Musical Instruments Mfg | ELECTRONIC MUSIC INSTRUMENT |
JPS5565996A (en) * | 1978-11-13 | 1980-05-17 | Nippon Musical Instruments Mfg | Electronic musical instrument |
USRE33738E (en) * | 1979-04-27 | 1991-11-12 | Yamaha Corporation | Electronic musical instrument of waveform memory reading type |
JPS55144296A (en) * | 1979-04-27 | 1980-11-11 | Nippon Musical Instruments Mfg | Electronic musical instrument |
US4210054A (en) * | 1979-05-14 | 1980-07-01 | Kimball International, Inc. | High note priority monophonic brass keyer system |
US4409877A (en) * | 1979-06-11 | 1983-10-18 | Cbs, Inc. | Electronic tone generating system |
US4333377A (en) * | 1979-08-17 | 1982-06-08 | Acoustic Standards | Tone generation system for electronic musical instrument |
JPS5636697A (en) * | 1979-09-03 | 1981-04-09 | Nippon Musical Instruments Mfg | Electronic musical instrument |
JPS5688197A (en) * | 1979-12-20 | 1981-07-17 | Nippon Musical Instruments Mfg | Preference circuit for electronic musical instrument |
GB2083669B (en) * | 1980-09-05 | 1985-01-03 | Casio Computer Co Ltd | Key data entry system |
GB2097167B (en) * | 1981-03-31 | 1984-12-19 | Casio Computer Co Ltd | Electronic musical instrument |
JPS5862696A (en) * | 1981-10-09 | 1983-04-14 | カシオ計算機株式会社 | Electronic musical instrument |
JPS5862693A (en) * | 1981-10-09 | 1983-04-14 | カシオ計算機株式会社 | Electronic musical instrument having automatic performance function |
DE3219254C2 (en) * | 1982-05-21 | 1985-05-15 | Günter Dipl.-Ing. 8013 Haar Schade | Method and device for electronic music production |
US4506581A (en) * | 1982-06-19 | 1985-03-26 | Casio Computer Co., Ltd. | Touch response apparatus for electronic keyboard musical instrument |
JPH0760310B2 (en) * | 1984-05-19 | 1995-06-28 | ローランド株式会社 | Touch control device |
US4599930A (en) * | 1984-05-25 | 1986-07-15 | Casio Computer Co., Ltd. | Electronic musical instrument with touch response function |
JPS6141192A (en) * | 1984-07-31 | 1986-02-27 | 株式会社河合楽器製作所 | Electronic musical instrument |
US4620469A (en) * | 1984-12-03 | 1986-11-04 | Kawai Musical Instrument Mfg. Co., Ltd | Key assignor for a touch responsive electronic musical instrument |
EP0204122B1 (en) * | 1985-04-24 | 1993-07-21 | Yamaha Corporation | Electronic musical instrument |
JPS61294499A (en) * | 1985-06-21 | 1986-12-25 | ヤマハ株式会社 | Musical sound signal generator |
US4699039A (en) * | 1985-08-26 | 1987-10-13 | Nippon Gakki Seizo Kabushiki Kaisha | Automatic musical accompaniment playing system |
EP0235538B1 (en) * | 1986-01-31 | 1992-04-22 | Casio Computer Company Limited | Waveform generator for electronic musical instrument |
DE3786988T2 (en) * | 1986-11-28 | 1993-12-23 | Yamaha Corp | Electronic musical instrument. |
JP2610139B2 (en) * | 1987-09-05 | 1997-05-14 | ヤマハ株式会社 | Tone generator |
JP2554508B2 (en) * | 1987-09-29 | 1996-11-13 | 株式会社河合楽器製作所 | Electronic instrument envelope generator |
JP2525853B2 (en) * | 1988-03-17 | 1996-08-21 | ローランド株式会社 | Continuous hit processing device for electronic musical instruments |
US6553272B1 (en) * | 1999-01-15 | 2003-04-22 | Oak Technology, Inc. | Method and apparatus for audio signal channel muting |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
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US2855816A (en) * | 1951-12-26 | 1958-10-14 | Rca Corp | Music synthesizer |
GB997126A (en) * | 1963-04-01 | 1965-06-30 | Ass Elect Ind | Improvements in and relating to power switchgear |
US3515792A (en) * | 1967-08-16 | 1970-06-02 | North American Rockwell | Digital organ |
US3594487A (en) * | 1969-08-25 | 1971-07-20 | Navcor Inc | Contactless electronic keyboard array |
US3610806A (en) * | 1969-10-30 | 1971-10-05 | North American Rockwell | Adaptive sustain system for digital electronic organ |
US3697661A (en) * | 1971-10-04 | 1972-10-10 | North American Rockwell | Multiplexed pitch generator system for use in a keyboard musical instrument |
US3763364A (en) * | 1971-11-26 | 1973-10-02 | North American Rockwell | Apparatus for storing and reading out periodic waveforms |
US3755608A (en) * | 1971-12-06 | 1973-08-28 | North American Rockwell | Apparatus and method for selectively alterable voicing in an electrical instrument |
US3740450A (en) * | 1971-12-06 | 1973-06-19 | North American Rockwell | Apparatus and method for simulating chiff in a sampled amplitude electronic organ |
GB1409763A (en) * | 1972-01-17 | 1975-10-15 | Nippon Musical Instruments Mfg | Musical tone wave shape generating apparatus |
JPS5236406B2 (en) * | 1972-01-17 | 1977-09-16 |
-
1973
- 1973-12-11 US US423846A patent/US3882751A/en not_active Expired - Lifetime
- 1973-12-12 AU AU63550/73A patent/AU472638B2/en not_active Expired
- 1973-12-13 CA CA188,106A patent/CA985536A/en not_active Expired
- 1973-12-13 GB GB5805773A patent/GB1440488A/en not_active Expired
- 1973-12-13 DE DE2362037A patent/DE2362037C3/en not_active Expired
- 1973-12-13 IT IT2990/73A patent/IT1000838B/en active
- 1973-12-14 NL NLAANVRAGE7317156,A patent/NL168978C/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DE2362037A1 (en) | 1974-06-27 |
US3882751A (en) | 1975-05-13 |
AU472638B2 (en) | 1976-05-27 |
NL168978B (en) | 1981-12-16 |
NL168978C (en) | 1982-05-17 |
DE2362037C3 (en) | 1984-08-16 |
CA985536A (en) | 1976-03-16 |
DE2362037B2 (en) | 1980-06-04 |
NL7317156A (en) | 1974-06-18 |
AU6355073A (en) | 1975-06-12 |
IT1000838B (en) | 1976-04-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
429A | Application made for amendment of specification (sect. 29/1949) | ||
429H | Application (made) for amendment of specification now open to opposition (sect. 29/1949) | ||
429D | Case decided by the comptroller ** specification amended (sect. 29/1949) | ||
SP | Amendment (slips) printed | ||
PE20 | Patent expired after termination of 20 years |
Effective date: 19931212 |