JPS61102681A - Performer guidance unit for keyed instrument - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to a device for guiding a player when playing a keyboard instrument, and in particular to a device for guiding a player's finger to press a key, and further for guiding a player to press the next key. The present invention relates to a player guiding device that guides a non-keyed part using a key display device so that fingers can be placed conveniently.

<Prior art> Keyboard instruments such as pianos, organs, reed organs, etc. are played according to various fingering methods. Divided into.

Regarding this key press section, follow the instructions below.

With conventional automatic guidance devices, a predetermined song can be played by pressing the keys in accordance with the guidance display, such as blinking, corresponding to the keyboard instrument, but the fingers that are not pressed, that is, the part of the key that is not pressed, will not be able to perform the next press. Since the instructions for the keys are not displayed, players, especially beginners, are unable to press the next key according to the fingering method, and therefore, the conventional device has the disadvantage that it is not possible to perform smoothly.

<Problems to be Solved by the Invention> The present invention has been made by focusing on the above-mentioned drawbacks of the conventional device.The purpose of the present invention is to provide an automatic guidance device that displays the key to be pressed next, as well as the key display area to be pressed by the finger. For fingers other than the key to be pressed, display the non-pressed part at a position suitable for pressing the next key after the key to be pressed.
°″7″″tiaw.

We try to provide the following. Another object of the present invention is to provide a device that allows a player to learn a keyboard instrument by automatically repeating correct fingering techniques.

<Means for solving the problem> The present invention has been made to achieve the above object, and
The gist of the system is to provide a key display device that corresponds to the keys necessary to play a given piece of music, and a key display device that indicates when the performer presses down or releases a key when playing the song. and a detection device for detection.

and a key display device operation control means configured to display on the key display device the position of the key to be pressed next according to the music piece when the detection device detects a key press, and a performance in which the music piece is sequentially played. In the user guidance device, the key part display device detects a key depression with the detection device and displays the key depression part which is the next key to be pressed in the music piece by means of the operation control means.

To provide a player guidance device for a keyboard instrument, characterized in that a non-depressed key part is displayed so that the fingers can be placed at a position suitable for depressing the next key to be pressed.

<Example> Next, one embodiment of the present invention will be described based on the accompanying drawings.

In Figures 1 and 2, a plate P is installed horizontally to accommodate the keyboard holder in the vicinity of where the keyboard holder of a conventional piano is attached, corresponding to the keys required for performance; 1 across the entire width of the piano, corresponding to the 88-key keyboard above P.
Light emitting diode arrays D1 to Dis are arranged. In this case, the keyboard holder will remain the same as before and the new installation will be on the board P.
may be placed. Further, each light emitting diode may be made to correspond to the key 1 necessary for actual performance, and in this case, the number of light emitting diodes is reduced. Figure 1, Shikooide 2, specifies the position of the key to press according to each note written on the musical score, and places the fingers in the appropriate position to press the next key after the specified key position. a non-depressed key position designation that allows the keyboard to be placed; a movement status that specifies whether the pressed key position and the non-depressed key position change or move; and a movement direction that specifies whether to move to the left or right; A magnetic tape that has been converted into a binary code so that the melody part and accompaniment part can specify the amount of movement (size and length) and the speed of movement according to the music, respectively. , floppy disk sheets, perforated tape, magnetic cards, and other well-known input media. 3 is an interface circuit for matching voltage levels; 4 is a computer control circuit; and 5 is a switch circuit, which includes a lamp to indicate that input to the storage device 6 has been completed and a start switch. There is. When the performer checks the start/end Y indicator lamp and presses the start switch in this switch circuit, the control circuit 4 is activated and the stored music is read from the first and second blocks of the storage device 6. The first note of the melody part is pressed, D,. and a non-key-pressing section D6□, D, j, which allows the fingers to be placed in a position suitable for pressing the next key to be pressed on the key-pressing section.
D, 4, the first note of the accompaniment section (if any), and the left hand range for it are read out as described below. 6
is a storage device of an electronic computer. As shown in FIG. 9, the control circuit 4 responds to a switch state detection circuit 9o and a detection circuit 9o for detecting when a player presses or presses a key, or when a pressed key is released. The binary code information of the notes and notes to be played simultaneously in the melody part and the accompaniment part stored in the melody part and the accompaniment part are sequentially read out from the storage device 6, and the light emitting diode D□ corresponding to the key pressed next to the melody part is read out from the storage device 6.
~D#, any one or more of the key pressing parts 1), , D, l
, which emit light particularly brightly, as well as allowing the fingers to be placed in a position suitable for pressing the next key to be pressed at the corresponding key-pressing section DsL, D,
3゜L) Make the light emitting diode in s4 emit light with a little more attention than that (strength of light), and then press one or more of the light emitting diodes D□ to Dsa corresponding to the key to be pressed next in the accompaniment section. The key parts D4° are made to emit light particularly brightly, and the corresponding left hand non-pressing parts D□,,D,...
It is particularly provided with a drive circuit 8o for causing the light emitting diode located at D4□ to emit light a little more prominently. −
・Interface circuit 3, control circuit 4, switch fIiM
S & t%ia □ Engineering 612.41. I□Yu. - "Constituting a component inside the body, attached to the piano, from the interface circuit 3 a conductor for connection to the external input medium 2, and from the control circuit 4 a connection cord to each of the diodes D1 to Do. It is designed to pull out each.

Next, with reference to FIGS. 5 to 8, a description will be given of a device that detects when a performer presses down or releases a pressed key, for example, in the melody section.

Although FIGS. 5 to 8 illustrate the diode D, the same applies to the other diodes L)2 to D68. The part surrounded by the one-dot chain line in Figs. 5 and 6 corresponds to the switch S1 in Fig. 9, and is a non-contact optical sensor type or magnetic sensor type that can be attached and detached by a socket on the board. switch assembly, 82
The same applies to ~S s@. FIGS. 7 and 8 are diagrams explaining the principle of this contactless switch assembly, and correspond to FIGS. 5 and 6, respectively, and show the state before the player presses the key 1 and the state when the key 1 is pressed down. Each represents the state after the

In FIG. 7, the light beam generated from the light emitting diode PD1 is ! Before pressing down on a1 with your finger, the lens was Q□.

The light is received by the photodetector diode FD via Q2.

The current from the 10B power supply is grounded through the light receiving diode PL), and no control signal is sent to the switch state detection circuit 90 of the control circuit 4 (switch S1 is closed). When key 1 is pressed down, the state shown in Fig. 8 is reached.

The light beam from the light emitting diode PD□ is transmitted to the light receiving diode PD
2, no light is received, and the control signal from the 10B power supply flows to the switch state detection circuit 90 of the control circuit (switch 81 is open).

The control circuit 4 shown as a block in FIG. 9, FIG. 10, FIG. 11, and FIG. 12 has a switch state detection circuit 90, and the switch state detection circuit 90 includes switches 5X-8s,
It is grounded via a pull-up resistor circuit 100 and connected to a positive power source, for example, 5.

Since the switch S□ opens when the key is pressed down and closes when the key is released, the voltage at the connection point J in Figures 7 and 8 changes from Ov to 5V at the moment of pressing down, and 5V at the moment of release. from 0
Each changes to ■. Therefore, the switch state detection circuit 9
0 detects the positive transition state of the control signal, the control signal (2
If the control signal (binary "1") is generated, the moment of push is detected, and when the negative transition state is detected, the control signal (binary "1") is generated.
0''), the moment the pressed key is released is detected. Further, the switch circuit ~S0 is not limited to a contactless switch, and may be a well-known mechanical switch.

The control circuit 4 detects when the performer presses down the keys of the first block (melody part) and the second block (accompaniment part), for example, and the detection circuit 9
When two communication signals rlJ occur at 0.

Start reading the next block of the storage device 6, that is, the third block (melody section) and the fourth block (accompaniment section) (see FIGS. 13 and 14). (also applies when the circuit start switch is pressed). In FIGS. 1 and 2, each block of the storage device 6 has a key pressing section corresponding to the right hand key position to be pressed, and a finger placed at a position suitable for pressing the next key to be pressed. A row of light emitting diodes D1 to D8 . made up of 88 light emitting elements is used to designate each non-key pressed position. Among them, for example, D5□.

D6o is used as a key pressing part to emit strong light, and among them, for example, light emitting diodes D, , □, DG3. It includes a command to cause D and 4 to emit light weakly as non-keyed parts. The control circuit 4 reads and executes these commands, and one light emitting diode, □, corresponds to the non-depressed key part.

1) G3. Along with making DG4 emit light and displaying it.

Among them, light emitting diodes D,,,D,. It emits a strong light to indicate the position of the key to be pressed. For the accompaniment section, for example, a light emitting diode D is used as a key pressing section at the left hand key position.
,7. D4° is made to emit strong light, and the light emitting diodes D, , D3 . .

1) Make 42 emit weak light. In the above case, one row of light emitting elements is used to distinguish between the pressed key part and the non-pressed key part of the right hand (melody part) by emitting light intensities, that is, the light emitting elements emit light strongly or weakly. In addition, to distinguish between the pressed and unpressed parts of the fingers of only the left hand or both the left and right hands, the light emitting elements can be color-coded as described below.

It is also possible to use any one or a combination of displaying a musical note as described in detail in Utility Model No. 1983-20726 by the present applicant as a multi-light display.

Furthermore, the number of remaining fingers of the left and right hand or either hand to press the key is 1.For example, if the key-pressing portion is two right-hand fingers, the non-key-pressing portion has a total of five fingers of the right hand. - 2 = 3 keys, but in this case, the fingering method is to press the key with the key press section, and then place the fingers other than the key press in the appropriate position to press the next key. In addition to this, it is also possible to display the non-key pressed part so that it corresponds to all fingers (10 or 5) of both the left and right hands or either one.

FIG. 9 shows the configuration of the control circuit 4 for the embodiments shown in FIGS. 1 and 2, and this control circuit includes the switch state detection circuit 90 and the drive circuit 80 described above. The anodes of the light emitting diodes D□~Dss are connected to the 1B power supply through a resistor, and the cathodes are connected to the collectors of the transistors TR~'I'R,,.

The bases of the transistors TR□~TR,, are connected to the terminals T~1'8. of the drive circuit 80 through diodes. are connected to each separately. For example, when the control circuit 4 detects the depression of a key corresponding to a note forming the melody part, the control circuit 4 detects the depression of the key to be pressed next after the melody part using a light emitting diode, for example, D.
, D, , and the non-depressing key part is displayed using a light emitting diode, for example, D, DG3.
DG4 is read from the storage device 6 and the corresponding terminals T, 7. T. and Ts 1+ T s 31 T G
4 is increased from OV to +24■, for example. The diode DG71DGO needs to emit light more strongly than the others, but in order to do so, the transistor TRs□
, TR,o and the transistor T' Rst , 'r R
By changing the impulse count of the pulse that controls the bases of G3 and TRs4, for the same frequency of 1, for example, 1000 pulses/second, the pulse width applied to the bases of transistors TR, . larger than the pulse width applied to the base of the transistor TR, .

The impact count of the pulse applied to the base of 'l'' Rso may be, for example, 90%, and the @i impact count of the pulse applied to the base of the other transistors may be, for example, 10%.

In that case, diode D, 7. D.

diodes emit light for a longer period of time than other diodes, so they appear brighter. As is well known, this difference in impact coefficient can be set during programming, and although it will not be described in detail here, the difference in impact coefficient can be set at the selected terminal among terminals 1゛, ~T0 (here, terminals T, 7゜T60 and T6□+). T@3t
This is done by commanding the on state and off state of Ta2) at different ratios corresponding to the desired impact coefficient value.

For the accompaniment section played with the left hand, for example, along with the light emitting diodes D,..., D4°, which indicate the pressed key, which is the next key to be pressed, the light emitting diodes D3sr D, which are the non-pressed keys.
9. D4□ is similarly emitted.

In addition, when instructing only the non-key pressed part and causing the light emitting diode of the non-key pressed part to emit light, for example, the transistor T R5
7, TRso, , TRs□, 'I' RG3
, TRG4 need only have a constant impact coefficient, which simplifies programming. Also.

Some pieces of music do not require an accompaniment section played by the left hand, and in that case, it is sufficient to simply cause the light emitting diodes in the non-keyed part of the right hand to emit light one after another, further simplifying programming.

According to another embodiment of the present invention, the light emitting diode array ~D
8@, a well-known light emitting diode capable of emitting 6f light in two colors is used, and the same light emitting diode emits red light for the pressed keys of the melody and accompaniment parts, and the same light emitting diode emits red light for the pressed keys of the melody and accompaniment parts. For example, the same light emitting diode can emit green light. In addition, the melody section and accompaniment section are divided into two colors, red and green, and the light emitting diode corresponding to the key in the melody section emits a particularly bright red light, and the key section in the accompaniment section emits light. It is also possible to make the diode emit a particularly bright green light. In this case, the circuit shown in FIG. 10 is used.

D knee is a red light emitting diode, Dil is a green light emitting diode, and they are connected to terminals T knee, , T1-2 of the control circuit 4 as shown, so that terminals 'r□-□, T
-2 selectively corresponding to the voltage of the 1B power supply, for example +2
By applying a control voltage of 4V, the red light emitting diode D□4 or the green light emitting diode D! -2 emits light.

Note that a well-known light emitting diode that emits light in two colors is used.

According to yet another embodiment of the present invention shown in FIG. Two rows of light emitting diodes D' are used to indicate the non-key-pressing portion where fingers can be placed. The light emitting diode array is
For example, green light emitting diodes D1 to D are combined with each of all 88 keys of the piano (or only the keys necessary for performance).
The 881 light emitting diode row D' is also the 88 keys of the piano (
It consists of two rows of, for example, red light emitting diodes D'1 to D', 8, which are combined with each of the keys necessary for playing. In this embodiment as well, when the detection circuit 9o detects that the player has pressed down a key or released the pressed key, the control circuit 4 is activated and the non-depressed key parts of the fingers of the left and right hands are marked with a green color. Light emitting diode e.g. D' 389 D'
39+・D'42 and D' SET D'S'lt
In addition to displaying by emitting light from D'SS, the key press section is also illuminated by a light emitting diode, for example 0. ,.

The instruction is given by the light emission of D,,,D,,,D,4. As shown in FIG. 11, the control circuit used in this embodiment is formed by a switch state detection circuit 90 and drive circuits 80 and 80'. is designed to be controlled. When the performer presses the start button, or when the detecting circuit 90 detects that the performer has pressed down a key or released a pressed key, it corresponds to the notes of the melody part and accompaniment part that should be pressed first. The pressed key part and the non-pressed part are light emitting diodes D□
~D, , D'□~D', , are displayed.

Next, an embodiment in which two endless belts are used as mechanically movable elements to indicate a pressed key portion and a non-pressed portion will be described with particular reference to FIG. In place of the above-mentioned one or two rows of diodes, an endless belt 16 is installed near the piano's keyboard holder.
．． 16' are attached, and by arranging light emitting diodes consisting of light emitting elements corresponding to a series of 13 keys (8 keys each in the drawing) corresponding to one octa, respectively, the light emitting diodes 16- 1~16-8゜1
6'-1 to 16'-8 are formed. In the example, the pressed key part of the melody part is 16-1.16-4, the non-pressed part is 16-5.16-7.16-8, and each accompaniment part is 16'-3.゜16'-6 and 16'-
1,16'-5,16'-8. In each block of the storage device 14.

When the key is pressed, the data on whether or not to move the endless belt 16, 16', and if so, the direction and distance of movement, are displayed in the light emitting diode array, indicating the key to be pressed next. When the performer presses the start switch or presses down a key during a performance, the data is stored along with the data of the light-emitting diode corresponding to the part, and when the performer presses the start switch or depresses a key during performance, the key part to be pressed next and the position suitable for the next part to be pressed are stored. The non-depressing parts where the fingers can be placed are indicated one after another.

In any of the embodiments described above, all the notes of one song are not within a certain octave range (13 keys), and the position of the group of light emitting diodes or indicators is different during the performance of one song. Move left and right many times. Those skilled in the art should be able to easily binary-encode a piece of music according to the fingering method so that the number of movements and the distance traveled for the piece of music are as small as possible. In the case of the embodiments shown in FIGS. 2 and 3, there is no l:I pivoting element and it is sufficient to simply cause another group of light emitting diodes to emit light.
In the embodiment shown, it is necessary to move the endless belts 16, 16' in each case either to the left or to the right. The movement range of the endless belt 16 may be one key, and if a note suddenly jumps to a high range, for example, the movement range of one key may be sufficient.
Since the endless belt 16 moves a considerable distance to the right, which can span more than an octave, the performer must move his left and right arms accordingly. If this moving distance is defined as the number of keys, the maximum moving distance is 88-12
=76, and is represented by 7 binary bits. Set this to "1" for the left direction and "0" for the right direction.

1 bit is added to indicate each of these, and a total of 8 bits represent the left and right movement distance of the endless belt 16. All the notes of the melody section encoded in this way are stored in the storage device 6 together with all the encoded notes of the accompaniment section. The contents of the binary information stored in the storage device 6 are as shown in FIG. 13 in the case of monochromatic strong and weak light emission (FIGS. 2 and 9). In addition, in the case of the display band display shown in FIG. 4 and FIG.
This can be achieved by adding the detection of movement of the display band as one octave, the direction of movement, and the amount of movement in addition to the amount of movement. Fig. 13 shows the contents of each block in the case of monochromatic strong and weak light emission as a car light display. First, as a melody part, the first block has 13 bits for specifying the pressed key position of the pressed key part of the piano 881i1, and 13 bits for specifying the pressed key position of the pressed key part, and 13 to specify the non-pressed key position to display the part
bit, presence or absence of movement for the next display of pressed and non-pressed keys, 1 bit, direction of movement (left/right) 1 bit, amount of movement 7 bits, and display movement speed corresponding to the speed of performance in accordance with the musical score. 6 bits are displayed, and the accompaniment section is expressed in the same way as the melody section in the second block, followed by the third block (melody section), fourth block (accompaniment section), and so on. Continue. The reason why the presence/absence of movement and the direction of movement are set to 1 bit each is that if no movement is performed, 7 bits of movement amount and 6 bits of movement speed can be omitted. FIG. 14 shows the contents of each block when musical notes are displayed as a multi-light display. In this case, in addition to the above-mentioned FIG. Add bits to make a total of 45 bits. Note that if the bit indicating the presence or absence of movement is 0, there is no need to move the endless belt 16, 16', so programming is performed to immediately move to the next block.

In the case of the embodiment of FIG. 14, a device for moving the endless belt and means for controlling the operation of the moving device are required. To explain this moving device, in FIG. 12, reference numerals 300 and 301 are pulse motor drive circuits for the melody section and accompaniment section, that is, biasing circuits for the endless belts 16 and 16', and coils W to W, , W' , ~W′,
are the excitation windings of the pulse motors M and M', which are connected to the energizing circuits 300 and 301 via diodes and transistors, and are also connected to their respective 10B power supplies. Every time one pulse is sent out as a control signal from the drive circuits 300, 301, the excitation coil W, W, tW
,, W, or W', t W' z+ W' 3+
W'4 is excited in this order or in the reverse order, and the pulse motors M and M' are rotated forward or reverse in a stepwise manner by a constant angle. The movement of one key is performed by each pass. When the display band of the endless belt 16 is moved, the light emitting diodes 16-1, 16-4 within that range are made to emit light as key presses, and at the same time, the light emitting diodes 16-1, 16-4 and 16-5, 16-7, 16
-8 as the non-pressed part, and 16'-3 of the accompaniment part.
, 16'-1, 16'-5 as the key pressing part
, 16'-8 are displayed as non-depressed key parts.

If a so-called linear pulse motor, in which a part of the stator is made straight, is used instead of the pulse motors M and M', there is an advantage that the resolution is higher than that of a conventional rotary type motor.

In each of the above-mentioned embodiments, a light emitting diode is used as a light emitting element, but instead of a light emitting diode, a lamp, a liquid crystal, or any known type of fluorescent display that emits light when a ground current flows can be used instead of the light emitting diode. elements may also be used.

In addition, musical notes are coded in advance and stored in a fixed storage device such as a programmable read-only memory or a core memory, and this is used as a storage device 6. During performance, performance data is sent from this fixed storage device through the control circuit 4 one after another to a light emitting diode array. Alternatively, it may be displayed on D' or the display band.

This storage device is installed as a memory cassette at a location where the cassette is attached to the operation panel of the electronic computer (in which the main parts of the computer, such as the control circuit 4 and the storage device 6, are incorporated).

Furthermore, when practicing a simple piece of music, the accompaniment section is not played, so the light emitting diode array of the accompaniment section, the related control circuit section, and the endless belt 16' do not need to be arranged from the beginning. According to the present invention, the key-pressing section can be pressed down together with the key-pressing section, which is the next key that the performer should press according to the music. The non-depressed part of the key is displayed on the key display device so that the fingers are placed in the appropriate position for the next press of the key, allowing the user to move their hands and fingers in the most suitable manner when playing a keyboard instrument and learn to play smoothly. There is an effect.

4. Brief description of the drawings FIG. 1 is an explanatory diagram showing an auxiliary device used in a player guiding device according to an embodiment of the present invention together with a keyboard instrument, and the electronic computer part is shown in a block diagram; Third
4 are explanatory diagrams showing a light emitting diode array used in other embodiments of the player guiding device according to the present invention, together with a part of a keyboard.

Fig. 5.6 is a schematic side view showing a detection circuit for detecting when a performer presses down a key or releases a pressed key, before and after the key is pressed, respectively; Fig. 7; , 8th
The figures are detailed diagrams of the parts surrounded by the dot-dashed lines in Figures 5 and 6, respectively. Figure 9 is a schematic layout diagram of the control circuit used for monochromatic strong/weak display, and Figure 10 is for two-color display. FIG. 11 is a schematic arrangement diagram of the control circuit used in the embodiment of FIG. 3, FIG. 12 is a schematic arrangement diagram of the control circuit used in the embodiment of FIG. 4, and FIG. FIG. 14 is an explanatory diagram showing the stored contents of the storage device in the case of displaying the car light on the pressed key part, and FIG. 14 is an explanatory diagram showing the stored contents of the storage device in the case of displaying the musical note on the pressed key part.

D, D'...Light emitting diode array (key pressed part and non-key pressed part), 16.16'... Endless belt, 80... Drive circuit (operation control means of key display device), 90... Detection circuit ( Detection device), 300, 301... energizing Fig. 1, 5 Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 6 Fig. 7 Fig. 8 Fig. 9 Fig. 10 Fig. 11 Fig. 12 figure

Claims (6)

[Claims] (1) A key display device corresponding to the keys required to play a given piece of music, and a device that detects when a performer presses down a certain key or releases a pressed key while playing the piece of music. a detection device; and a key display device operation control means configured to display, on the key display device, the position of the key to be pressed next according to the music piece when the detection device detects a key press; In the player guidance device for playing a piece of music, the key part display device detects a key press by the detection device, and displays the key pressed part, which is the next key to be pressed in the piece of music, by means of an operation control means. A player guidance device for a keyboard instrument, characterized in that a non-depressing part is displayed so that the fingers can be placed in a position suitable for depressing the next key to be pressed. (2) The pressed key part and the non-pressed key part of the key display device displayed by the operation control means are one row of light emitting elements consisting of light emitting elements corresponding to each key necessary for playing the music, and the above-mentioned light emitting element A player of a keyboard instrument according to claim 1, which uses any one or a combination of each element to emit light strongly or weakly, to emit light in different colors, to blink, or to display musical notes. Guidance device. (3) The pressed key part and the non-depressed part of the key display device displayed by the operation control means are two light emitting element rows consisting of light emitting elements corresponding to each key necessary for playing a piece of music. The player guidance device for a keyboard instrument according to claim 1, wherein the light emitting elements in the element row emit light strongly or weakly, emit light in a color row, blink, or display musical notes. (4) A movable endless belt consisting of one or two rows of light-emitting elements is used for the pressed and non-pressed parts of the key display device displayed by the operation control means, and each light-emitting element row has a light-emitting element. The player guidance device for a keyboard instrument according to claim 1, which emits light strongly or weakly, emits light in different colors, flashes, or displays musical notes. (5) The non-depressing part of the key display device is a display corresponding to a finger other than the key-depressing part of both or one of the left and right hands. Player guidance device for keyboard instruments. (6) Playing a keyboard instrument according to any one of claims 1 to 4, wherein the non-depressing part of the key display device is a display corresponding to all fingers of both left and right hands or either one of them. person guidance device.