US3743757A - Automatic rhythm instrument with temporary roll beat circuit - Google Patents

Automatic rhythm instrument with temporary roll beat circuit Download PDF

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Publication number
US3743757A
US3743757A US00296600A US3743757DA US3743757A US 3743757 A US3743757 A US 3743757A US 00296600 A US00296600 A US 00296600A US 3743757D A US3743757D A US 3743757DA US 3743757 A US3743757 A US 3743757A
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United States
Prior art keywords
rhythm
switches
instrument
sound sources
automatic
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Expired - Lifetime
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US00296600A
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English (en)
Inventor
S Okamoto
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Nippon Gakki Co Ltd
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Nippon Gakki Co Ltd
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    • 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
    • G10H1/36—Accompaniment arrangements
    • G10H1/40—Rhythm
    • 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
    • G10H2210/341—Rhythm pattern selection, synthesis or composition
    • G10H2210/351—Inserting a drum roll, e.g. as pattern break
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S84/00—Music
    • Y10S84/12—Side; rhythm and percussion devices

Definitions

  • An automatic rhythm instrument comprises, as a conventional construction, counter stages, rhythm pattern pulse encoding matrix, rhythm selector switches and rhythm sound sources; and as an additional construction, a temporary roll beat circuit including switches directly connecting between the counter stages and the rhythm sound sources.
  • the instrument enables the various rhythm sound sources to be triggered not only by various sets of previously determined ordinary rhythm pattern pulses, but also by any of a plurality of repetitive pulse trains each having a predetermined frequency or time width which are used as temporary roll beat performance.
  • Automatic rhythm instruments heretofore put to practical application are generally provided with a clock pulse oscillator for generating a repetitive basic tempo pulse train having a frequency or time width corresponding to the shortest beat unit (generally, a quaver or semiquaver) for the various rhythm tempos, the oscillator being further followed by a multistage frequency dividing counter chain.
  • a clock pulse oscillator for generating a repetitive basic tempo pulse train having a frequency or time width corresponding to the shortest beat unit (generally, a quaver or semiquaver) for the various rhythm tempos, the oscillator being further followed by a multistage frequency dividing counter chain.
  • a basic tempo pulse train from the clock pulse oscillator is divided in frequency by counter stages exhibiting binary output pulses from the various stages of the counter chain.
  • the pulse trains are conducted through the known rhythm pattern forming circuit including a diode matrix circuit to generate various sets of rhythm pattern pulses such as those of the march, rumba and tango.
  • the prior art automatic rhythm instrument is only designed to produce sounds derived from various percussion instruments, for example, cymbals, maracas and claves, or ordinary chord or bass sounds or combinations thereof in exact timing with tempos of any desired one or more of the aforesaid rhythm pattern pulses.
  • the object of this invention is to provide an automatic rhythm instrument capable of effecting a rhythmic performance of far greater variety than has been possible with the conventional rhythm instrument.
  • An automatic rhythm instrument is characterized in that it is so designed as to drive its various rhythm sound sources by any desired one of a plurality of repetitive pulse trains each having a predetermined frequency or time width which are used in encoding vari ous sets of rhythm pattern pulses.
  • An automatic'rhythm instrument of the aforementioned arrangement has the advantage of effecting a performance of far greater variety than the conventional automatic rhythm instrument which is so arranged as to cause its rhythm sound sources to be energized only by the above-mentioned various sets of ordinary rhythm pattern pulses.
  • FIG. 1 is a schematic circuit diagram of an automatic rhythm instrument according to an embodiment of this invention.
  • FIG. 2 is a schematic circuit diagram of a modification of the rhythm instrument.
  • reference numeral 11 denotes a clock pulse oscillator of free-running oscillation type such as an astable multivibrator provided, for example, with a frequency control element 12.
  • the clock oscillator 11 is so adapted as to generate a repetitive basic clock pulse train having a frequency or time width corresponding to the shortest beat unit (e.g., a semiquaver) required to produce the later described various sets of rhythm pattern pulses.
  • Output pulses from the clock oscillator 11 are conducted to a multistage frequency dividing counter chain 13, which comprises, in this example, four stage binary circuits (flipflop circuits) 13,, 13,, 13 and 13,, cascade connected such that the output line of each stage is connected to the input line of the immediately following stage.
  • These binary circuits 13, to 13, are operated with frequencies corresponding to k, A, if; and one sixteenth of those of output pulses from the clock pulse oscillator 11 (namely, 2-, 4-, 8-, l6-times length periods) and are respectively provided with two output lines afi, b- F, c-E and d-Z so as to produce two output pulses corresponding to the binary ONE and ZERO which are different by in phase.
  • the output pulses from the binary circuits 13, to 13 are conducted into a rhythm pattern pulse encoder 14 of the later described arrangement to be converted into various types of rhythm pattern pulse trains such as for waltz, march and rumba.
  • rhythm pattern pulse encoder 14 is provided with diode matrix connected to respective two output lines of the respective binary counters 13, to 13,, and with AND logics and OR logics as is known in this field.
  • rhythm pattern pulse trains obtained from the rhythm pattern pulse encoder 14 of the abovementioned arrangement pass through the corresponding normally closed switches SW, to SW provided, if required, and a rhythm selector switches 15 selectively operated by a player prior to performance, so as to be supplied as trigger signals to the preselected ones of a plurality of rhythm sound sources R, to R, such as those of the cymbals, maracas and claves.
  • rhythm sound sources R, to R are connected to a loudspeaker 18 through a common amplifier 17.
  • This invention is characterized in that temporary roll beat circuit or a fast repetitive trigger pulse introducing path 21 of the later described arrangement is provided between the input lines of the rhythm sound sources R, to R, and the desired ones of the output lines of the clock oscillator 11 and/or the binary counters 13, to 13,.
  • Said temporary roll beat circuit 21 comprises a plurality of normally open switches SW,, to SW,,,, having, for example, the movable contacts connected to the input lines of the rhythm sound sources R, to R and a changeover or selector switch SW having a single movable contact connected to the common connection 20 of the fixed contacts of said switches SW,, to SW,, through a normally open switch SW provided,if required, and having three stationary contacts connected to the output line of the clock pulse oscillator (i.e., the input line of the first stage binary counter) as well as to the output lines of the first and second stage binary counters 13, and 13,
  • the stationary contacts of the selector switch SW are selectively closed by said single movable contact.
  • the normally closed switches SW, to SW, are gang operated with the normally open switch SW (this constitutes a temporary roll beat introducing switch).
  • the rhythm selector switch 15 is operated to select a certain desired rhythm performance. Then the preselected one or more of the rhythm sound sources R to R, are actuated in accordance with the rhythm pattern pulse trains from the rhythm pattern pulse encoder 14, thereby producing an ordinary automatic rhythm performance.
  • FIG. 2 is a schematic circuit diagram of an automatic rhythm instrument according to a modification of this invention.
  • rhythm sounds from a plurality of rhythmsound sources R to R are delivered through their keyers 31 to 31,
  • the rhythm sound sources R to R are placed (connected) to other positions than those in the embodiment of FIG. 1, and instead the keyers 31 to 31, take the original positions of such sources in FIG. 1 and are connected to the output side of the rhythm selector switches 15.
  • the normally closed switches SW to SW of FIG. 1 are eliminated.
  • the elements of FIG. 2 which are the same as those of FIG. 1 are denoted by the same numerals and the description thereof is omitted.
  • An automatic rhythm instrument arranged as shown in FIG. 2 realizes the performance effect as follows. Namely, where the preselected one or more of the keyers 31 through 31,, are
  • the fast repeating pulses are added through the aforesaid temporary roll beat circuit 21, whereby the fast beating performance by such rhythm sounds determined by the switches SW through SW is added to the normal automatic rhythm performance.
  • An automatic rhythm instrument comprising a clock pulse oscillator generating a repetitive pulse train; a multistage frequency dividing counter chain cascade arranged for connection to the clock pulse oscillator; a rhythm pattern pulse encoder connected to each stage output of the counter chain to produce a plurality of required rhythm pattern pulse trains; rhythm selector switches connected to said encoder; a plurality of rhythm sound sources connected to said rhythm selector switches and each triggered by the preselected one or more of the rhythm pattern pulse trains from the rhythm pattern pulse encoder; and a temporary roll beat circuit including further switches connected between said counter stages and the rhythm sound sources.
  • said temporary roll beat circuit includes a plurality of second switches connected to the predetermined one or more of the rhythm sound sources, and a third selector switch having a movable contact connected to said second switches and having stationary contacts connected to two or more of the outputs from the clock pulse oscillator as well as from the respective counter stages.
  • said temporary roll beat circuit further includes a fourth normally open switch disposed between said second switches and the third selector switch; and a plurality of fifth normally closed switches positioned between the rhythm pattern pulse encoder and the rhythm selector switches, said normally closed fifth switches being gang-actuated with said normally open fourth switch.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Electrophonic Musical Instruments (AREA)
US00296600A 1971-10-18 1972-10-11 Automatic rhythm instrument with temporary roll beat circuit Expired - Lifetime US3743757A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8235671A JPS5331363B2 (enrdf_load_stackoverflow) 1971-10-18 1971-10-18

Publications (1)

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US3743757A true US3743757A (en) 1973-07-03

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US00296600A Expired - Lifetime US3743757A (en) 1971-10-18 1972-10-11 Automatic rhythm instrument with temporary roll beat circuit

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JP (1) JPS5331363B2 (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3803970A (en) * 1972-04-19 1974-04-16 Nippon Musical Instruments Mfg Automatic rhythm device with start and stop controller for clock oscillator and a gate
US3837254A (en) * 1973-04-30 1974-09-24 Conn C Ltd Organ pedal tone generator
US3842184A (en) * 1973-05-07 1974-10-15 Chicago Musical Instr Co Musical instrument having automatic arpeggio system
US3943813A (en) * 1973-10-15 1976-03-16 Matsushita Electric Industrial Company, Ltd. Automatic music playing system
US4181059A (en) * 1978-04-11 1980-01-01 Cbs Inc. Circuit for simulating sound of wire brush rotated around head of snare drum
US4299154A (en) * 1979-08-27 1981-11-10 Kimball International, Inc. Electronic rhythm generator
USRE37459E1 (en) 1987-12-30 2001-12-04 Yamaha Corporation Electronic musical instrument having a ryhthm performance function
CN105513583A (zh) * 2015-11-25 2016-04-20 福建星网视易信息系统有限公司 一种歌曲节奏的显示方法及其系统

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3764722A (en) * 1972-06-16 1973-10-09 Conn Ltd C G Automatic rhythm system providing drum break
JPS5168818A (enrdf_load_stackoverflow) * 1974-12-11 1976-06-14 Nippon Hamondo Kk
JPS5163612A (enrdf_load_stackoverflow) * 1974-11-08 1976-06-02 Nippon Hamondo Kk
JPS588000B2 (ja) * 1974-12-24 1983-02-14 ヤマハ株式会社 ジドウリズムエンソウソウチ
JPS5196422U (enrdf_load_stackoverflow) * 1975-01-31 1976-08-03
JP2668691B2 (ja) * 1987-12-30 1997-10-27 ヤマハ株式会社 リズム演奏装置
JP2546097B2 (ja) * 1991-12-26 1996-10-23 ヤマハ株式会社 電子楽器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3358068A (en) * 1964-06-26 1967-12-12 Seeburg Corp Automatic rhythm device
US3518352A (en) * 1967-06-30 1970-06-30 Warwick Electronics Inc Rhythm generating circuit for musical instrument
US3649736A (en) * 1969-09-01 1972-03-14 Eminent Nv Electronic rhythm apparatus for a musical instrument

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3358068A (en) * 1964-06-26 1967-12-12 Seeburg Corp Automatic rhythm device
US3518352A (en) * 1967-06-30 1970-06-30 Warwick Electronics Inc Rhythm generating circuit for musical instrument
US3649736A (en) * 1969-09-01 1972-03-14 Eminent Nv Electronic rhythm apparatus for a musical instrument

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3803970A (en) * 1972-04-19 1974-04-16 Nippon Musical Instruments Mfg Automatic rhythm device with start and stop controller for clock oscillator and a gate
US3837254A (en) * 1973-04-30 1974-09-24 Conn C Ltd Organ pedal tone generator
US3842184A (en) * 1973-05-07 1974-10-15 Chicago Musical Instr Co Musical instrument having automatic arpeggio system
US3943813A (en) * 1973-10-15 1976-03-16 Matsushita Electric Industrial Company, Ltd. Automatic music playing system
US4181059A (en) * 1978-04-11 1980-01-01 Cbs Inc. Circuit for simulating sound of wire brush rotated around head of snare drum
US4299154A (en) * 1979-08-27 1981-11-10 Kimball International, Inc. Electronic rhythm generator
USRE37459E1 (en) 1987-12-30 2001-12-04 Yamaha Corporation Electronic musical instrument having a ryhthm performance function
CN105513583A (zh) * 2015-11-25 2016-04-20 福建星网视易信息系统有限公司 一种歌曲节奏的显示方法及其系统
CN105513583B (zh) * 2015-11-25 2019-12-17 福建星网视易信息系统有限公司 一种歌曲节奏的显示方法及其系统

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Publication number Publication date
JPS5331363B2 (enrdf_load_stackoverflow) 1978-09-02
JPS4847823A (enrdf_load_stackoverflow) 1973-07-06

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