JPS6120082A - Keying indicator for electronic musical 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 [Field of Application of the Invention] The present invention relates to a key press instruction device for an electronic musical instrument that allows performance practice of an electronic musical instrument having a keyboard.

[Background of the invention]

Various proposals have been made for teaching oneself how to play the keyboard. For example, in Japanese Patent Laid-Open No. 56-27189, key depression positions are sequentially displayed using lamps, and fingering (that is, which finger should be used to press the key) is also displayed. However, in this prior art, the fingering is indicated using a hand-shaped display device or by numbers (1 for the thumb, 2 for the index finger, . . . 5 for the little finger). In the case of the former device, a special display device must be provided separately from the display device, such as a lamp, which is arranged corresponding to each key to display the key pressed position. The player had to look at the display (display) at the same time and judge the key press position and fingering, which did not necessarily provide the desired training effect.

In addition, as described above, instructing fingering by displaying numbers is not desirable, especially for young children.

[Purpose of the invention]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a key press instruction device for an electronic musical instrument that can easily and clearly indicate key press positions and fingerings by eliminating the drawbacks of the prior art described above.

[Summary of the invention]

In order to achieve the above object, in the present invention, the display body arranged corresponding to the key is made to take on display states of at least five colors, and the key to be pressed is indicated by the display on the display body. In addition to giving instructions, fingerings are also displayed using selective color display.

[Embodiments of the invention]

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

FIG. 1 shows the appearance of an electronic keyboard instrument to which the present invention is applied. On the body 1 of this electronic musical instrument, a keyboard 2 with a plurality of keys, an operation section 3, and a sound emitting section 4 are provided.
Also, inside the fuselage 1 is an LSI that constitutes the electric circuit etc. shown in Figure 2.
Components, speakers (not shown), etc. are arranged. In addition, on the operation unit 3, there is a NORMAL mode for specifying normal performance, a WRITE mode for specifying writing when writing a series of scale data constituting a desired song into a RAM (random access memory), which will be described later. RAM
REA that specifies reading of scale data written in
A slide-type mode changeover switch 5 for switching to D mode, a tone designation switch group 6, a rhythm designation switch group 7,
A polyem switch 8 and the like are provided. Also, keyboard 2
A plurality of display bodies 9 corresponding to the six keys are disposed at positions facing the six keys in the vicinity of the six keys. Each of these display bodies 9 is
For example, it is made up of a light emitting diode, and when it lights up, it instructs to operate the opposite key and also instructs the fingering, and has an interface circuit inside.

Next, the main circuit configuration of this embodiment will be explained with reference to FIG. Reference numeral 10 in FIG. 2 is an input section, and this input section 10 converts a key operation signal output from the keyboard 2 when a key is operated into a code representing the scale of the operated key, and generates scale data SD of 7-bit parallel data. It is outputted and given to the musical tone generating section 11. Further, a key operation signal corresponding to an operation key from the keyboard 2 is given to a CPU (central processing unit) 12. This CP
A mode designation signal output from each switching position of the mode changeover switch 5 is also given to U12. And C.P.
U12 outputs a read command signal /? when the mode selector switch 5 is switched to READ mode or WRITE mode. Outputs the writing command signal R/W and
13 read or write operations. Further, when the mode selector switch 5 is switched to the WRITE mode, the CPU 12 inputs desired music data from the ROM package 21 via the interface circuit 22, and stores the music data in the RAM.
Give to 13. Addresses of this RAM 13 are sequentially designated according to address data AD output from the RAM counter 14, and music data, that is, scale data and fingering data are written in the area of the designated address. R
The contents of the AM counter 14 are updated by "1" each time the increment signal INC(W) output from the CPU 12 is applied. Note that the increment signal I N C (W) is a signal output from the CPU 12 when the mode selector switch 5 is switched to the WRITE mode.

Further, the scale data SD' read from the RAM 13 in the READ mode is provided to the coincidence detection circuit 15 to which the scale data SD is input from the keyboard 2. The coincidence detection circuit 15 detects coincidence of the input scale data SD%SD', and when a coincidence is detected, outputs a one-shot pulse coincidence signal and supplies it to the AND gate 16. When the mode selector switch 5 is set to the READ mode, the AND gate 16
A key-on signal output from the CPU 12 is also provided each time a key is pressed. The output signal of the AND gate 16 is applied to the RAM counter 14, and is an increment signal INC(R) that updates the contents of the RAM counter 14 by "1".

The contents of the RAM counter 14 are reset to "0" by receiving a reset signal output from the CPU 12 when an external switch (not shown) is operated.

The scale data and fingering data read from the RAM 13 are also provided to an LED (light emitting diode) driver 17. This LED driver 17 operates when the READ mode switching output of the mode selection switch 5 is given as an operation command signal from the CPU 12, and the display body 9 is colored according to the inputted scale data in accordance with the fingering data. Creates and outputs an LED drive signal for display.

On the other hand, the coincidence signal output from the coincidence detection circuit 15 is also given to the tone generating section 11. The musical tone generating section 11 is supplied with a READ mode switching output from the mode switching switch 5 as a control signal from the CPU 12. The musical tone generator 11 generates and outputs a predetermined musical tone signal according to the input music data SD, and sends it to the speaker to emit the sound. When the above control signal is given from the CPU 2, the above The musical tone signal is created and output only when a matching signal is given.

FIG. 3 shows the configuration of each display body 9, and shows the power supply voltage V
cc is applied via the resistor R, and five drive signal lines are applied from the LED driver 17, that is, red,
Drive signal lines corresponding to five colors, yellow, green, orange, and blue, are connected, and when a low level signal is applied to any signal line, the LED of that color is displayed. In this case, LED elements of five colors are provided in the glass case.

In addition, in FIG. 4, the display body 9 is divided into five pieces,
It has display bodies 9-1 to 9-5 for respective colors. That is, this is an example in which LED elements of five separate colors are provided.

The display body may be an LED, a liquid crystal, or any other display body as long as it can display multiple colors. For example, if the display body changes color depending on the drive voltage, it is not necessary to use five drive signal lines. It goes without saying that a single connection line can be used in place of the connection, and in that case, the applied voltage may be changed according to the color.

Next, the operation of the above embodiment will be explained. First, the operation when writing a series of scale data constituting a desired musical piece and corresponding fingering data from the ROM package 21 to the RAM 13 will be described. By switching the mode changeover switch 5 to the WRITE mode and performing a predetermined operation, data of a desired music piece is sequentially inputted from the ROM package 21 via the interface circuit 22. At that time, the RAM 13 receives the signal R/W from the CPU 12.
Receive writing instructions according to the instructions. That is, the RAM counter 14 is sequentially incremented under the control of the CPU 12, and its contents are set in the RAM 13.

Then, when the mode selector switch 5 is switched to the READ mode, the RAM 13 becomes readable, and the L
The ED driver 17 becomes operational. For this reason, R.A.
The scale data and fingering data are read from the area at address O of the RAM 13, which is addressed by the content rOJ of the M counter 14.

By the way, as shown in Figures 5 and 6, the musical scale data consists of a 4-bit code indicating the note and a 3-bit code indicating the octave, and the fingering data specifies the thumb to little finger as shown in Figure 7. It consists of a 3-bit code, and if the music currently stored in the RAM 13 is as shown in FIG. 8, the actual stored digital data will be as shown in FIG. 9.

Here, the first scale is E4, specifying that it should be played with the middle finger, and the next scale is G4, specifying that it should be played with the little finger. The same applies below.

As a result, first, scale data (roololoJ) SD' indicating E4 is read out from the RAM 13, and fingering data "010" indicating the middle finger is read out.
As a result, the display 9 corresponding to scale E4 is displayed in green.

This makes it clear that the first key to be operated is E4 and that it should be operated with the middle finger, as shown in FIG.

If you follow this instruction and operate the key of scale E4 with your middle finger,
Scale data SD corresponding to the scale E4 is output from the input section 10 and provided to the coincidence detection circuit 15. Therefore, the coincidence detection circuit 15 outputs a coincidence signal, and as a result, the musical scale E
At the same time, an increment signal is output from the AND gate 16 and applied to the RAM counter 14, setting the content of the RAM counter 14 to "1".
shall be.

Therefore, from the RAM 13, according to the contents of the RAM counter 14, the scale G4 stored in the area at address 1 is stored.
scale data ([0O10001j) and fingering data (
rloooJ) is read out, and as a result, the display 9 facing the key of the scale G4 lights up in blue (the 10th key).
figure). This indicates that the key to be operated next is the key of scale G4, and that it should be operated with the little finger.On the other hand, if the coincidence detection circuit 15 does not output a coincidence signal, that is, the key of scale E4. If you do not operate the key, but accidentally operate another key (for example, the adjacent key), the scale E4
The musical tones are not emitted. Further, since the contents of the RAM counter 14 are not updated, the display 9 facing the key of the scale E4 remains lit in green. Therefore, when a key is not operated in accordance with a key press instruction, this is notified to the performer both audibly and visually.

Next, when the key of scale G4 is operated according to the key press instruction, and a match signal is output from the match detection circuit 15, the musical tone of scale G4 corresponding to the key press is emitted, as described above. Immediately after pressing the key, the display 9 facing the key of scale G4 lights up again in blue (10th key).
figure). This instructs that the next key to be operated is also the key of scale G4. Similarly, when a key is operated in accordance with a key press instruction, a musical tone of the scale corresponding to the operated key is emitted, and at the moment of the key press, the next key to be operated is indicated along with the fingering. Therefore, even beginners can perform correctly by simply operating the keys according to the key press instructions and paying attention to the rhythm. In addition, since the key press instruction progresses at the moment the key is pressed, the next key to be operated can be immediately visually confirmed. Further, if the key is not operated in accordance with the key press instruction, the player is notified by stopping the sound emission and the progress of the key press instruction, so that the player can perform correctly.

Furthermore, in order to effectively practice playing with the electronic musical instrument of this embodiment, it is preferable to wear a ring on the name finger as shown in FIG.

That is, a red ring 31 is worn on the thumb, a yellow ring 32 is placed on the index finger, a green ring 33 is placed on the middle finger, an orange ring 34 is placed on the ring finger, and a blue ring 35 is placed on the little finger. As a result, by determining whether the display color of the finger indicator 9 arranged corresponding to the six keys described above matches the color of the rings 31 to 35 worn on the name finger, it is possible to determine the next key to be pressed very easily. The player can understand the key positions and the fingers to use.

Above, one embodiment of the present invention has been described in detail, but in addition,
There are the following variations.

That is, in the embodiment described above, when a new key is pressed, if it is correct, the next key press instruction is performed, but the display state is not changed until the key is released, and the next key press is The position at which the key should be pressed and the finger to be used may also be displayed.

Furthermore, in addition to displaying the display corresponding to one key at the same time, in the case of playing a chord, etc., it is sufficient to display the instruction of the key corresponding to each scale making up the chord and the respective fingerings.

Furthermore, not only the key to be operated next, but also the key to be operated next, that is, a total of two keys, may be displayed in the same way.
The other may be displayed blinking.

Further, in addition to the scale data, note length data may also be stored, and the lighting time, blinking time, etc. may be controlled according to the note length data.

Historically, in the above embodiment, the performance data may be transferred from the ROM package to the internal RAM to directly access the 11'-1R0λ1 package that instructs key presses, and in that case, the internal TtAM is not necessary.

Furthermore, performance data may be input from a ROM package or from various storage media, or performance data may be created using the keyboard and various switches and stored in RAM, and then used for performance practice. You may also do this.

Furthermore, in the embodiment described above, the fingerings are displayed only for the fingers of one hand, but the fingerings for the fingers of both hands can be displayed in the same way. That is, a total of 10
This can be easily done by displaying different colors on the display. In addition, a display body that displays five basic colors,
This can also be done using a display that distinguishes between the left hand and the right hand (for example, a display that displays the right hand when the light is on, the left hand when the light is off, the right hand when the light is red, and the left hand when the light is green).

Various other changes can be made without departing from the spirit of the invention.

〔Effect of the invention〕

As described in detail above, according to the present invention, in accordance with the instruction of the key to be pressed, the fingering instruction of which finger should be used to press the key can be given by changing the display color of the display body. This is effective for performance practice, and is especially convenient for music education for young children.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; FIG. 1 is an external perspective view of an electronic musical instrument, FIG. 2 is a circuit diagram of the musical instrument, FIGS. 3 and 4 are detailed views of a display, and FIG. 7 to 7 are notes,
A diagram showing the relationship between octaves, fingers, and corresponding chords, etc.
Figure 8 is a diagram showing an example of a piece of music, Figure 9 is a diagram representing the piece of music in Figure 8 in digital data, Figure 10 is a diagram showing a time chart of the operation of the instrument, and Figure 11 is a diagram showing the fingertips. FIG. 2...Keyboard, 9...Display body, 12...CPU, 1
3...RAM, 17...LED driver, 21...
・ROM package, 31-35...Ring.

Claims (1)

[Claims] In an electronic musical instrument equipped with a keyboard having a plurality of keys, a display body arranged corresponding to the key and displaying at least five different colors, a series of scale data constituting a desired piece of music, and a series of scale data related to this scale data. A storage means for storing fingering data to be pressed; and a storage means for sequentially reading out the scale data and fingering data stored in the storage means and driving the display body to instruct the keys to be pressed and to display the at least one of the above-mentioned keys. 1. A key press instruction device for an electronic musical instrument, comprising means for indicating which finger to use by selectively displaying five different colors.