Classifications

• • G—PHYSICS
  • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
  • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
  • G09B15/00—Teaching music
  • G09B15/001—Boards or like means for providing an indication of chords
  • G09B15/002—Electrically operated systems
• • G—PHYSICS
  • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
  • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
  • G09B15/00—Teaching music
  • G09B15/08—Practice keyboards

Definitions

• the subject of the invention is a device and its method for automatically visualizing the position of the fingers in order to quickly learn chords and harmonies composing the accompaniments of melodies, said device acts as a visual chord selector.
• Currently, to learn chords you have to refer to printed manuals where the majority of chords are represented. The student accesses by turning the pages of his book the chord he is looking for, the chord is represented by the notes arranged on a musical staff and by the position of the fingers represented on a part of the instrument studied:
• chords The pupil must gradually learn by heart all the chords, with a manual. It does not display the chords it reproduces. It is tedious with each new agreement to handle a manual. The current study of chords is long and discourages many students.
• the device according to the invention avoids all these drawbacks.
• This device makes it possible to select a chord and to automatically obtain, in addition to its reproduction, a visualization at the level of a musical staff, the position of the fingers corresponding to said chord represented on the part of the instrument studied and possibly in addition to the position of the fingers, which fingers are to be placed in this way.
• Said selected chord being able to be recorded on memory, can be played at different rhythms, erased, added to other chords also recorded by the pupil, this one can completely record the accompaniment of the melody then reproduce it by accelerating, slowing down or repeating the passages he desires.
• Said device can be connected to a television, which allows more complete visualizations.
• the device can be combined with a comparator which signals to the student that the chord played is false or fair.
• the device according to the invention can receive cassettes, discs or memories prerecorded by professionals that the student uses to work.
• Figures 1 and 2 are views showing the main elements of the device shown schematically. Respectively, these figures represent the device in action in figure 1 for a major DO, perfect chord and in figure 2, a minor DO, perfect chord, to study this chord on a guitar.
• Figure 3 is a view of the device shown in Figures 1 and 2, but adapted to the study of the piano or organ. Said device is shown in action for a flat ER 7.
• Figure L is a block diagram of the electronic diagram of the various elements constituting the device and their function.
• Figure 5 is a schematic view of the various electronic elements of the storage.
• Figure 6 is a schematic view of the various electronic elements of the keyboard input, mixing and storage.
• Figure 7 is a schematic view of the various electronic elements of the display at the output.
• Figure 8 is. a schematic view of an alternative embodiment of FIG. 7.
• the device is made up of two parts, a control part Z and a display part W.
• the device comprises a tuning selector 1 which can be more or less complete than that shown.
• Said selector 1 is composed of a keyboard 2 with at least two inputs which vertically pori the names of the twelve sounds 3 of the range (notes and their five alterations) and horizontally the names of the main chords 4 ° perfect chord, 5 °, 6 °, 7 ° -, 7 °, 7 °, 9o and possibly on more complete models but not shown on these figures 11 °, 13 °.
• the device In combination with the chord selector 1, the device includes a reproduction of part of the instrument 5 in the case of FIGS. 1 and 2, the instrument is a guitar whose neck has nine keys.
• a musical staff 6 makes it possible to view the position of the notes composing the chosen chord, with any alterations.
• two buttons 7 and 8 allow you to choose either the G key or the A key (for piano and organ).
• buttons 9 and 10 allow you to choose the tone of the selected chord, major 9 or minor 10, the button pressed remains locked until the next voluntary change of tone.
• buttons 11, 12, 13 and K allow to memorize one to four times the chosen chord and this as many times as the melody requests it, that is to say that button 11 records a quarter of measure, the button 12 ′ records two quarters of measurement, the button 13 records three quarters of measurement and the button 14 a measurement of four quarters.
• the length of the memorized accompaniment depends of course on the storage capacity of the device, for example sixty four measurements.
• a button 15 deletes the last recorded chord.
• a button 16 for starting allows the reproduction of the recording.
• a repeat button 17 allows you to take two to three measurements back to repeat a difficult passage several times.
• a 1S button allows total erasure.
• a built-in metronome 19 at variable speed allows the visualization of the chords composing the memorized harmony and this at a rhythm which allows learning, the visualization of the rhythm is done by the flashing of the lamps 27 which indicate the position of the fingers on the instrument . Keys 3 and 4 remain lit to allow playback.
• a sound top 20 can be added if necessary.
• Erase bar 22 switches off the displayed chord on the board fixedly and memorize a silence.
• Buttons 23, 24, 25, 26 allow to know the position of the fingers according to several variants or in the case of the piano or the organ (figure 3), the chords reversed.
• the operation of the device is as follows:
• the device is placed on or next to the instrument, it is put into working order by button 21.
• the corresponding lamps automatically light up at 27 and 23, both on the musical staff 6 and on the reproduction of a part of the instrument 5. It is therefore sufficient for the pupil to place his fingers on the instrument at the place indicated to obtain the desired agreement.
• chord lit is Major or Minor
• the metronome 19 is arranged at the chosen tempo, the chord lights flash, marking the chosen rhythm, an auditory tone can also be combined.
• instrument 5 is two octaves of an organ or a piano, the notes 28 and the position of the fingers 27 appear in the same way when the T key is pressed.
• An oscillator 88 at its output, connected by line 29 to an input of a device for detecting and recognizing input keys and buttons 30 will be described in more detail in FIG. 5.
• the other input of the device comes from the input keyboard
• the output line 34 of the device 30 goes on the one hand to the input 35 of a switch 50 and on the other hand to the given input 41 of a random access memory 40.
• Said random access memory having its output connected to the pad 42 of switch 50 by line 43.
• a prerecorded external memory 45 is also connected to switch 50 by line 44 at pad 49.
• the random access memory 40 and the external memory 45 receive via line 48 the digital data of the address of a memory word sought from a write-read device, memory address generator 46, said device being controlled by line 44 coming from a metronome oscillator 47.
• the switch 50 has its output which supplies the wire 51, on the one hand the input of an input selection display device 33 which itself supplies the input keyboard 1 with the wire 32 and on the other hand, the entry of a ROM memory of the chords 36.
• the output wires 37 of said read-only memory 36 supply on the one hand a display device 33 (studied instrument 5 and musical range 6) and on the other hand a possible sound generator 39.
• FIG. 5 more particularly describes the devices 30 and 33 associated with the keyboard 2.
• Oscillator 83 attacks a divider counter by 12 7492 which itself attacks a divider counter by 16 7493.
• a demultiplexer 74154 (a) with 12 of its 16 outputs and a multiplexer 74150 with its J_6 inputs form a network of 192 points of crossing.
• a T key is associated with each crossing point so that when said key is pressed one of the outputs of 74154 is connected to an input of 74150.
• the 74154 is attacked by the output of 7492 and the 74150 is attacked by the output of 7493.
• the content of counters 7492 and 7493 is stored in a type D register 7474 tooth the clock input is the output of multiplexer 74150.
• the display device 33 is constructed as follows: - A demultiplexer 74154 (b) with 12 of its 16 outputs the transistor emitters Tr Q to Tr., Form a network of 192 crossing points. Each crossing point is associated a lamp L. The said lamps are associated with the keys T of the device 30.
• the bases of the transistors Tr Q to Tr ._- are attacked by the 16 outputs of a 74154 demultiplexer (c).
• the inputs of the two demultiplexers 74154 (b) and (c) are attacked by the bus 51 coming from the switch 50.
• the output o_ of the demultiplexer 74154 (a) is connected to input 4 of the multiplexer 74150 and when the counter 7493 will display the value 4 and the counter 7492 the value 6, the output of the multiplexer will be energized, which will memorize the values of the counters in register 7474.
• This numerical value will be transmitted to the demultiplexers 74154 (b) and (c) via lines 34 and 51 and switch 50.
• the demultiplexer (b) will have its output 6_ low; the demultiplexer (c) having its low output 4 will make the transistor Tr. conductive and the corresponding lamp L having the voltage V applied to its terminals will light up.
• a binary adder 7483 has its output connected to the input D of a register 74174 called accumulator. Said register has its output connected to input B of the adder. Input A of 1! Add ⁇ t îonneur receives the binary words +1, -1, -2, -3, -4 from buttons 15 and 17.
• the clock input of the accumulator comes from either a circuit OR 60 receiving the tops of the metronome 47, either of the buttons 15 and 17, or of a shift register 74165, said register being loaded in parallel by buttons 11, 12, 13 and 14. The operation of the device 46 is described below below.
• button 13 which loads into register 74105 the binary word '00010101' (button 11 loads the word '00000001', button 12 loads the word '00000101 ', button 14 loads the word' 01010101 ').
• FIG. 7 describes a way of making the display device 38.
• Each output of the chord read-only memory 36 attacks the base a transistor Tr n in the collector of which there is on the one hand the corresponding lamp 28 of the scope 6 and on the other hand, the corresponding lamp 27 of the instrument studied 5.
• the ROM of the chords 36 can be replaced in particular by a logic network programmed PLA or by wired logic. An alternative embodiment will be described below.
• the twelve-bit address bus 51 is divided according to its three components: position 52, chord 53, tone 54.
• the shift register 56 is loaded with the word from the memory 55 corresponding to the chosen DO chord whose address is available on the bus carrying the chord information 53.
• the content of 56 is then shifted in the serial converter parallel to its outputs 57, said converter having been set to zero at time t 0 .
• the counter 58 counts the activated notes until the comparator 59 is greater than or equal to the number of positions whose chord is to be returned (address 52). As long as the comparison is false, the register 56 is looped back on itself by the door 60 and the input of the serial-parallel converter 57 is blocked by the door 61.
• the down-counter 62 is loaded to the value 24 (number of keys displayed on the instrument).
• the comparator 63 will close the door 64, which makes it possible to light the lamps 27 and 28 to which a bit 1 corresponds in the serial-parallel converter 57.
• the clock is then stopped shift registers and we're ready to start a new cycle.

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• Engineering & Computer Science (AREA)
• Multimedia (AREA)
• Business, Economics & Management (AREA)
• Physics & Mathematics (AREA)
• Educational Administration (AREA)
• Educational Technology (AREA)
• General Physics & Mathematics (AREA)
• Theoretical Computer Science (AREA)
• Auxiliary Devices For Music (AREA)
• Electrophonic Musical Instruments (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=9232385

Family Applications (1)

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Family Cites Families (5)

• 1979
  • 1979-11-27 FR FR7929806A patent/FR2470419A1/fr active Granted
• 1980
  • 1980-11-21 BE BE0/202889A patent/BE886289A/fr not_active IP Right Cessation
  • 1980-11-26 WO PCT/FR1980/000166 patent/WO1981001625A1/fr unknown
  • 1980-11-26 EP EP80902234A patent/EP0040616A1/de not_active Withdrawn
  • 1980-11-27 IT IT68808/80A patent/IT1130538B/it active

Non-Patent Citations (1)

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