US3717715A - Electronic musical instrument provided with variable coupling of the keyboards - Google Patents

Electronic musical instrument provided with variable coupling of the keyboards Download PDF

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Publication number
US3717715A
US3717715A US00189173A US3717715DA US3717715A US 3717715 A US3717715 A US 3717715A US 00189173 A US00189173 A US 00189173A US 3717715D A US3717715D A US 3717715DA US 3717715 A US3717715 A US 3717715A
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United States
Prior art keywords
keyboards
bus
bars
keyboard
switches
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Expired - Lifetime
Application number
US00189173A
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English (en)
Inventor
P Jordy
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US Philips Corp
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US Philips Corp
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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
    • G10H1/18—Selecting circuits

Definitions

  • ABSTRACT An electronic musical instrument having at least two keyboards which are intercoupled in such a manner that the signals on the bus-bars of a keyboard are applied with controllable volume to the bus-bars associated with the same foot pitches of another keyboard.
  • the invention relates to an electronic musical instrument having at least two keyboards in which the various tones are applied by means of key switches to busbars which each correspond to a foot pitch and each are connected to a suitable amplifier, while the busbars of the same foot pitches of different keyboards may be connected to one another by means of switches.
  • a control device is connected between at least part of the bus-bars of at least one keyboard and the switches.
  • further switches are connected between the bus-bars and the associated amplifiers of at least one keyboard, so that the bus-bars may be disconnected from the amplifiers, the inputs of the amplifiers beingconnected to the outputs of the switches of at least one other keyboard.
  • FIG. I is a block-schematic circuit diagram of an instrument provided with three couplings.
  • FIG. 2 is a block-schematic circuit diagram of an instrument provided with three couplings and with the possibility of separating the keyboards from their groups of stops.
  • FIG. 1 there is shown a circuit diagram according to the invention of an electronic musical instrument having three keyboards, i.e. two manuals a and b and a pedal 0.
  • the various tones produced by generators G G are applied by means of key switches l to bus-bars 2, 2 as, 4, and 8 of the first manual a, to bus-bars 2', 4', and 8' of the second manual b and to bus-bars 2", 4", 8", and 16" of the pedal 0, the reference numerals simultaneously denoting the foot pitches.
  • Each of the bus-bars is connected to the input of anamplifier V, V with each of which a group of stops may be associated.
  • the bus-bars 2, 4, and 8 of the first manual a may be connected to the bus-bars of the same foot pitches 2, 4, and 8' respectively of the second manual b by means of a switch 8,.
  • the bus-bars 2", 4", and 8" of the pedal 0 may be connected at will either to the bus-bars 2, 4, and 8, respectively, of the first manual a or to the bus-bars 2', 4, and 8', respectively, of the second manual b by means of a switch S
  • the timbres selected on the various coupled keyboards are reproduced together on each keyboard when a key is depressed. However, frequently it is desirable to vary the volumes of the various foot pitches of the coupled keyboards with respect to one another.
  • control device 12 14, and 18; 12', 14, and 18'; and 12", 14", and 18"; respectively.
  • control devices may be simple continuous voltage controllers, but obviously a stepped control is possible as well.
  • control devices of any suitable type, for example photosensitive or capacitive devices, may be used.
  • FIG. 2 is a block-schematic circuit diagram of an instrument in which the bus-bars of a keyboard may be separated from the associated amplifier, the connections being shown for one of the foot pitches (8 foot) only, because the circuitry is the same for any foot pitch.
  • a generator G is connected to the associated key switches l of each of the keyboards a, b and c, the signals generated when the relevant key is depressed being applied to the bus'bars 8, 8, and 8" of the keyboards a, b, and c, respectively.
  • Each bus-bar 8, 8', and 8 is connected through a control device l8, l8, and 18" to a switch S S and S respectively, each switch having four positions and two contacts 11 and 12, 11' and l2, l1" and 12", respectively.
  • switches S S and S are provided between the bus-bars 8, 8', and 8" and the associated amplifiers V, V, and V", respectively, so that the busbars can be separated from the amplifiers.
  • each amplifier V, V, and V" is connected not only to the further switch S S and S respectively, but also to contacts 11' and 11"; 11 and 12''; 12 and 12'; respectively of the switches S and S S and S 8,, and S connected to keyboards b and c; a and c; a and b; respectively.
  • the switches S S and S are open in their first positions: they connect the control devices l8, l8, and 18" to the contacts 11, 11', and 11", respectively in their second positions, to the contacts 11 and l2; l1"
  • each keyboard is normally connected to the associated amplifier.
  • the keyboard a is coupled with the keyboard b. If the switch 8,, is moved to the third position, the keyboard a is coupled with'the keyboards b and c. If the switch S is moved to the fourth position, the keyboard a is coupled with the keyboard c. The same applies, with due alterations, to each of the switches S and S If the switches S and 8,, are in their second positions and the further switches S and S are open, the keyboard a is coupled with the amplifier V and the keyboard b is coupled with the amplifier V, i.e. the groups of stops of the two keyboards a and b are interchanged.
  • the stop group of a keyboard may be used as a free combination for either of the other keyboards b or c, for example c, while retaining the possibility of playing on the keyboard a by opening the further switch S moving the switch S to the second position with the contact 11 closed, so that the keyboard a is coupled with the keyboard b, and moving the switch 8,," to the second position with the contact 8 closed.
  • the stop group of the keyboard a is connected, together with the stop group of the keyboard c, to the keyboard c. If the further switch S also is open, only the stop group of the keyboard a is coupled with the keyboard 0.
  • switches used hereinbefore is to be understood to include any type of mechanical and electronic switches.
  • An electronic musical instrument comprising:
  • control means connected between at least several of the bus-bars of at least one keyboard and each of said switches interposed between said bus-bars of the same foot pitch in each of said keyboards for varying volume of said foot pitch in said keyboard with respect to the foot pitch in the other of said keyboards.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Multimedia (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Input From Keyboards Or The Like (AREA)
US00189173A 1970-10-23 1971-10-14 Electronic musical instrument provided with variable coupling of the keyboards Expired - Lifetime US3717715A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL707015522A NL154027B (nl) 1970-10-23 1970-10-23 Elektronisch muziekinstrument met variabele koppeling van de toetsenborden.

Publications (1)

Publication Number Publication Date
US3717715A true US3717715A (en) 1973-02-20

Family

ID=19811360

Family Applications (1)

Application Number Title Priority Date Filing Date
US00189173A Expired - Lifetime US3717715A (en) 1970-10-23 1971-10-14 Electronic musical instrument provided with variable coupling of the keyboards

Country Status (10)

Country Link
US (1) US3717715A (fr)
JP (1) JPS5123170B1 (fr)
AU (1) AU455385B2 (fr)
CA (1) CA953135A (fr)
DE (1) DE2102335C3 (fr)
ES (1) ES396217A1 (fr)
FR (1) FR2113072A5 (fr)
GB (1) GB1361431A (fr)
IT (1) IT940036B (fr)
NL (1) NL154027B (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818115A (en) * 1971-07-08 1974-06-18 Nippon Musical Instruments Mfg Multi-channel stereophonic sound reproducing system for electronic musical instruments
US3825668A (en) * 1972-05-30 1974-07-23 Nippon Musical Instruments Mfg Electronic musical instrument capable of providing a third type of musical tones by operation of two keyboards in addition to the ordinary melody and chord tones
US3886834A (en) * 1973-05-11 1975-06-03 Nippon Musical Instruments Mfg Electronic musical instrument capable of modulation controlling a second keyboard section tone signal in accordance with a first keyboard section tone signal
US4248123A (en) * 1979-04-25 1981-02-03 Baldwin Piano & Organ Company Electronic piano
US4300433A (en) * 1980-06-27 1981-11-17 Marmon Company Harmony generating circuit for a musical instrument
US5127306A (en) * 1989-01-19 1992-07-07 Casio Computer Co., Ltd. Apparatus for applying panning effects to musical tone signals and for periodically moving a location of sound image

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3040612A (en) * 1957-12-26 1962-06-26 Kinsman Mfg Company Inc Electrical musical instrument
US3049959A (en) * 1957-11-22 1962-08-21 Baldwin Piano Co Obtaining ensemble and celeste effects in electrical musical instruments
US3247310A (en) * 1962-09-13 1966-04-19 Chicago Musical Instr Co Musical instrument
US3260784A (en) * 1963-11-07 1966-07-12 Wolfgang J Wehrmann Electronic musical instrument having one or more keyboards
US3359358A (en) * 1963-05-22 1967-12-19 Warwick Electronics Inc Chord organ switching circuit for selectively playing either chords or single notes by depressing one key
US3433880A (en) * 1965-10-20 1969-03-18 Conn Ltd C G Percussion system
US3439569A (en) * 1965-06-24 1969-04-22 Warwick Electronics Inc Electrical musical instrument
US3565996A (en) * 1969-07-14 1971-02-23 Nippon Musical Instruments Mfg Plural keyboard electronic musical instrument with balancer and reverberation arrangement
US3610804A (en) * 1968-10-09 1971-10-05 Nippon Musical Instruments Mfg Combination of selector switch and expression control of electronic musical instrument
US3619469A (en) * 1970-03-23 1971-11-09 Nippon Musical Instruments Mfg Electronic musical instrument with key and pedal-operated volume controls

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3049959A (en) * 1957-11-22 1962-08-21 Baldwin Piano Co Obtaining ensemble and celeste effects in electrical musical instruments
US3040612A (en) * 1957-12-26 1962-06-26 Kinsman Mfg Company Inc Electrical musical instrument
US3247310A (en) * 1962-09-13 1966-04-19 Chicago Musical Instr Co Musical instrument
US3359358A (en) * 1963-05-22 1967-12-19 Warwick Electronics Inc Chord organ switching circuit for selectively playing either chords or single notes by depressing one key
US3260784A (en) * 1963-11-07 1966-07-12 Wolfgang J Wehrmann Electronic musical instrument having one or more keyboards
US3439569A (en) * 1965-06-24 1969-04-22 Warwick Electronics Inc Electrical musical instrument
US3433880A (en) * 1965-10-20 1969-03-18 Conn Ltd C G Percussion system
US3610804A (en) * 1968-10-09 1971-10-05 Nippon Musical Instruments Mfg Combination of selector switch and expression control of electronic musical instrument
US3565996A (en) * 1969-07-14 1971-02-23 Nippon Musical Instruments Mfg Plural keyboard electronic musical instrument with balancer and reverberation arrangement
US3619469A (en) * 1970-03-23 1971-11-09 Nippon Musical Instruments Mfg Electronic musical instrument with key and pedal-operated volume controls

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818115A (en) * 1971-07-08 1974-06-18 Nippon Musical Instruments Mfg Multi-channel stereophonic sound reproducing system for electronic musical instruments
US3825668A (en) * 1972-05-30 1974-07-23 Nippon Musical Instruments Mfg Electronic musical instrument capable of providing a third type of musical tones by operation of two keyboards in addition to the ordinary melody and chord tones
US3886834A (en) * 1973-05-11 1975-06-03 Nippon Musical Instruments Mfg Electronic musical instrument capable of modulation controlling a second keyboard section tone signal in accordance with a first keyboard section tone signal
US4248123A (en) * 1979-04-25 1981-02-03 Baldwin Piano & Organ Company Electronic piano
US4300433A (en) * 1980-06-27 1981-11-17 Marmon Company Harmony generating circuit for a musical instrument
US5127306A (en) * 1989-01-19 1992-07-07 Casio Computer Co., Ltd. Apparatus for applying panning effects to musical tone signals and for periodically moving a location of sound image

Also Published As

Publication number Publication date
GB1361431A (en) 1974-07-24
AU455385B2 (en) 1974-11-21
IT940036B (it) 1973-02-10
DE2102335C3 (de) 1979-05-23
AU3482071A (en) 1973-05-03
FR2113072A5 (fr) 1972-06-23
CA953135A (en) 1974-08-20
NL154027B (nl) 1977-07-15
JPS5123170B1 (fr) 1976-07-15
DE2102335B2 (de) 1978-09-21
NL7015522A (fr) 1972-04-25
ES396217A1 (es) 1974-10-16
DE2102335A1 (de) 1972-04-27

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