JPH10268751A - Fingering practice sheet for keyboard musical instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily store and carry the fingering practice sheet and to easily practice fingering at any place by composing the sheet of a sound source part, etc., having a sounding means which reads specific waveform information out of a waveform information storage means according to the signal from a detecting means and generates a sound. SOLUTION: When a key of a surface sheet 31 is pressed, the depression pressure is transmitted to a pressure-sensitive rubber sensor 1 through an electrode on the top surface and the pressuresensitive rubber sensor 1 converts the signal corresponding to the depression pressure into, for example, a voltage. The converted signal is sent from an electrode on the reverse surface to a detecting means through a key scanning circuit built in a foldable printed board 32 and the detecting means detects the ON/OFF action of the key. The signal indicating the detected ON/OFF state of the key is sent to the sounding means together with a note number detected by a CPU and waveform data corresponding to the detection result are read out of a waveform information storage means to control the generation of a specific electronic sound.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fingering practice sheet for a keyboard instrument, and more particularly to a fingering practice sheet capable of emitting different electronic sounds for each key, being freely bendable, and being easily stored and carried. .

[0002]

2. Description of the Related Art Conventionally, when practicing fingering of a keyboard instrument in a place where there is no keyboard instrument such as a piano, it has been performed using paper on which a picture of a keyboard is drawn. However, simply pressing the key drawn on the sheet does not produce sound, so even if you use the wrong finger, you may overlook it without realizing it, and the exercise effect was insufficient.

[0003] In addition, the detection of key on / off by a switch used in a conventional musical instrument may be difficult to detect depending on the part where the key is pressed, and the detection becomes unstable. There were also points.

[0004] For this reason, the on / off detection of the key is stable, the handling operation is easy, the practice can be carried out easily regardless of the practice location, and the operation mistake can be immediately self-determined, and the low-priced, easy-to-use fingering can be used. A practice sheet was required.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is possible to determine a fingering mistake by emitting different electronic sounds in accordance with a pressed key. Further, it is an object of the present invention to provide a fingering practice sheet for a keyboard instrument that can be easily stored and carried, and can be used to practice fingering easily anywhere.

[0006]

According to the present invention, a surface sheet 31 on which a key pattern of a keyboard instrument is displayed, and electrodes formed corresponding to the key pattern of the surface sheet 31 are mounted on upper and lower surfaces. The upper electrode is provided in contact with the topsheet 31, and a pressure-sensitive rubber sensor 1 for generating a signal corresponding to the pressure applied to the electrode corresponding to the pressed key pattern; A printed circuit board 32 provided in contact with each electrode on the lower surface and transmitting a signal generated by the pressure-sensitive rubber sensor 1 to the detecting means 2;
And a detecting unit 2 for detecting an off state.
And waveform information storage means 21 for storing waveform information read out based on the detection result of the detection means 2, and predetermined waveform information from the waveform information storage means 21 based on a signal sent from the detection means 2. The sound source unit 17 includes a sound generating unit 3 that reads out and generates sound.

The top sheet 31 of the sheet section 16 includes
It is characterized in that a pattern of an actual size keyboard is represented.

The printed circuit board 32 of the sheet portion 16
It is a flexible printed board that can be bent.

[0009] The seat section 16 and the sound source section 17 are integrally formed.

The seat section 16 and the sound source section 17 are formed independently of each other, and are used by being connected by a connector.

The sheet section 16 has a function of outputting MIDI OUT information.
It is characterized in that it is connected to the I IN terminal so that a musical tone is generated using a sound generation function of an external device.

7. A fingering training sheet for a keyboard instrument according to claim 1, wherein a signal sent from said sound generating means 3 is controlled by a volume control means 22.

[0013]

According to the present invention, when a key of a keyboard pattern represented in the actual size is pressed on the top sheet 31, the pressed pressure is applied to the upper surface divided in the same shape as the key pattern of the top sheet 31. The signal is transmitted to the pressure-sensitive rubber sensor 1 through the electrode 34, and a signal corresponding to the pressure pressed by the pressure-sensitive rubber sensor 1 is converted into, for example, a voltage.

The converted signal is sent from a lower electrode 34 to a detector 2 through a key scan circuit built in a bendable printed circuit board 32, and the detector 2 detects ON / OFF of a key.

A signal indicating on / off of the detected key is sent to the sound generating means 3 together with the note number detected by the CPU 11, and the waveform data corresponding to the detection result is read out from the waveform information storing means 21. The generation of a predetermined electronic sound is controlled.

Since the electronic sound generated in the present invention only needs to be able to discriminate the pressed key, a simple sound corresponding to the scale of each key, that is, de, re, mi,. Although it is not necessary to consider the control of the pitch, the volume, and the like according to the above, the present invention can also control the pitch, the volume, and the like.

Thus, when the trainee presses the key pattern on the keyboard of the top sheet 31, an electronic sound corresponding to the key of the pattern is generated, and an erroneous key operation is performed due to a difference in the generated electronic sound. When it is performed, it can be easily determined.

The pressure-sensitive rubber sensor 1 is provided in accordance with the size and shape of each key, so that any position of the key can be pressed, such as pressing a narrow white key between black keys. Pronounced. Therefore, it is possible to provide a fingering practice sheet for a keyboard instrument that is easy to practice and enables efficient fingering practice.

Moreover, the flexible printed circuit board 32
By using, the fingering practice sheet according to the present invention can be bent freely, can be easily stored and carried, for example, carried in a case, and can be practiced wherever there is a power supply.

Further, since the pressure-sensitive rubber sheet 1 is used, a fingering practice sheet having almost no stroke, being lightweight, thin, and easy to store and carry can be produced. In addition, by controlling the volume sent from the sound generator 3 using the volume controller 22, the optimum volume can always be maintained, so that there is less concern about disturbing the surroundings.

A CPU 11 and a detecting means 2 are built in the seat portion 16, and the sound generating means 3 is connected to an external device such as an electronic musical instrument or a MIDI device so as to utilize the sound generating function of the external device. May be configured.

In this case, the sounding means 17 of the fingering practice sheet
Can be simplified, the cost of the fingering practice sheet for the keyboard instrument can be reduced, and the weight and size can be reduced.

[0023]

FIG. 2 is an external view showing an example of a fingering practice sheet according to the present invention. As shown in the figure, the surface sheet 31 of the fingering practice sheet 16 of the present invention shows a pattern of the keyboard, and has electrodes 34 divided according to the size of the picture of the keyboard and the shape of the keys inside. A pressure-sensitive rubber sensor 1 is provided.

With this configuration, when the key pattern shown on the top sheet 31 of the fingering practice sheet is pressed, the pressing pressure of the thin and soft top sheet 31 is transmitted to the electrode 34 on the upper surface of the pressure-sensitive rubber sensor 1 as it is. Then, the pressure-sensitive rubber sensor 1 is compressed, and a voltage corresponding to the compression pressure is generated on the lower electrode 34.

The generated voltage is taken out from the electrode 34 on the lower surface and sent to the detection circuit 2 through the key scan circuit built in the printed circuit board 32, and the ON / OFF of the key is determined.

In the present invention, the entire sheet 16 can be bent by using a flexible printed board 32 which can be bent. The printed circuit board may be configured to be foldable at a specific portion by using a printed board having a certain degree of rigidity.

Next, the overall configuration of the fingering practice sheet of the present invention will be described with reference to FIG.

The CPU 11 controls the entire fingering practice sheet according to a control program stored in the program memory section of the ROM 12. Waveforms corresponding to ON / OFF of each key are stored in the ROM 12 by the CPU 11. It is read from the provided waveform information memory 21 and sent to the tone generator 3.

That is, the CPU 11 receives a signal from the detecting unit which is digitized by an A / D converter (not shown) and sent in a time-division manner, and receives the signal and a scan signal which is time-divisionally sent to the key scan circuit. Then, the note number of the key that is turned on / off is specified by performing software processing such as collation, and tone generation processing, mute processing, volume change processing, and the like are performed according to the specified result.

The ROM 12 stores a waveform information memory 21 for storing waveform information for each key, and various other fixed data, in addition to a program memory for storing a program for operating the CPU 11.

The waveform information memory 21 stores a waveform number, an address, and the like of the waveform stored in the waveform memory 4 according to each key, and is read by the CPU 11.

The RAM 13 temporarily stores the data handled by the CPU 11 described above.
1, a work area for the CPU 11, registers for controlling the fingering practice sheet, flags, and the like are defined. It also has a data area in which status information of the device is temporarily transferred and stored.

The pressure-sensitive rubber sensor 1 generates a voltage corresponding to the pressed pressure. This pressure-sensitive rubber sensor 1
Is generated, A / D converted, sliced at a predetermined slice level by the detection circuit 2, and then supplied to the tone generator circuit 3 as an ON or OFF signal.

The printed board 32 is a thin and bendable board having a built-in key scan circuit. One end is connected to each electrode 34 provided on the lower surface of the pressure-sensitive rubber sensor 1, and the other end is connected. It is connected to the detection circuit 2.

The detection circuit 2 detects on / off of a key based on a signal sent from the printed circuit board 32. The on / off information detected by the detection circuit 2 is as follows.
Sound source circuit 3 together with the note number specified by CPU 11
Conveyed to.

The tone generator 3 reads the waveform data corresponding to the signal sent from the CPU 11 from the waveform memory 4 and outputs it as a tone signal. To this end, a waveform memory 4 for storing waveform data is connected to the tone generator 3.

The D / A converter 5 converts a digital tone signal output by the tone generator 3 into an analog tone signal. The analog tone signal converted by the D / A converter 5 is supplied to an amplifier 6.

When performing the volume control using the fingering practice sheet of the present invention, the sound source 17 is provided with a volume control 2 for controlling the volume.
2 and a resistor for controlling the volume is provided between the D / A converter 5 and the amplifier 6 for control.

The amplifier 6 amplifies the analog tone signal supplied from the tone generator 3 through the D / A converter 5 with a predetermined gain. The output of the amplifier 6 is supplied to a speaker or headphones 7 as an output device.

The speaker or headphone 7 converts an analog tone signal as an electric signal sent from the amplifier 6 into an acoustic signal. That is, a tone is emitted according to the generated tone signal. In the present embodiment, the case of outputting from the headphones 7 is shown as an example.
You may comprise so that it may output from a speaker.

In this configuration, the sheet section 16 includes a top sheet 31, a pressure-sensitive rubber sensor 1, a printed board 32,
The sound source unit 17 includes the bottom sheet 33 and the detection circuit 2,
CPU 11, ROM 12 (waveform information memory 21), RA
M13, a sound source circuit 3, a D / A converter 5, a volume control resistor (not shown), and an acoustic device.

FIG. 3 is a view for explaining the structure of the seat section 16. As shown in FIG. As shown in the figure, on the upper surface of the fingering practice sheet of the present invention,
A surface sheet 31 having an actual size and a keyboard pattern is provided, and a pressure-sensitive rubber sensor 1 having an actual size keyboard-like electrode 34 attached to upper and lower surfaces is provided below the surface sheet 31. .

Further below, a printed circuit board 32 having a built-in key scan circuit is provided. One end of the printed circuit board 32 is connected to an electrode 34 corresponding to each key provided on the lower surface of the pressure-sensitive rubber sensor 1, and the other end is connected to the detection circuit 2.

Further, a bottom sheet 33 made of a soft and bendable sheet material such as a sponge is provided on the bottom surface of the sheet portion 16. The bottom sheet 33 protects the printed board 32 and the surface of the desk on which the fingering practice sheet is installed, and prevents the fingering practice sheet from slipping.

FIG. 4 is a diagram illustrating the configuration of the electrode 34 and the pressure-sensitive rubber sensor 1 of the fingering practice sheet according to the present invention.
The upper diagram is a top view of the pressure-sensitive rubber sensor 1, and the lower diagram is a side sectional view cut along the arrow AA.

As shown in the figure, on the upper and lower surfaces of the pressure-sensitive rubber sensor 1, electrodes 34 of a shape corresponding to the shape of each key, which are represented on the top sheet 31, are attached in pairs. Is pressed, the corresponding electrode 34 on the upper surface is pressed down, the pressure-sensitive rubber sensor 1 is pressed, and a current corresponding to the pressing flows to the electrode 34 on the lower surface.

This current is sent to the detection circuit 2 through a key scan circuit built in the printed circuit board 32, and A
The on / off of the key is determined by the / D conversion.

In the description of the embodiment of the present invention, the sheet portion 16
The case in which the sound source unit 17 is integrated with the sound source unit 17 has been described as an example, but the present invention is not limited to this, and various modes are conceivable depending on the arrangement of the sound source unit.

For example, the sound source 17 may be attached to one end of the seat 16 as in this embodiment,
The sound source section 17 may be separated from the sheet section 16 and installed, and both may be connected by a connector.

Further, the detection circuit 2 and the CPU
11 and a MIDI OU
If it is configured to output information of T (note number), it can be operated simply by connecting the output from the MIDI OUT to the MIDI IN terminal of another electronic musical instrument or the like,
You can practice fingering anywhere you have an electronic musical instrument with a MIDI terminal.

Further, if the note number output from the fingering practice sheet is stored in, for example, a sequencer, the practice result can be repeatedly confirmed, and the practice effect is further improved.

In this embodiment, the case where the headphone 7 is used as an output device is described as an example. However, a built-in speaker is used or a fingering practice sheet is LIN.
An EOUT terminal may be provided so as to be connected to an external device such as a radio or a stereo, for example, so as to generate sound from a speaker of the external device.

As described above, according to the present invention, when a key indicated on the top sheet 31 is pressed, a sound corresponding to the pressed key is generated, so that the trainee can make a mistake in key touch by himself / herself. Can be easily noticed.

Also, since the electrodes 34 are arranged in a shape similar to the shape of the keyboard shown on the topsheet 31,
Pressing any key on the keyboard produces a sound that makes it easy to practice fingering. For example, a sound is produced even when a narrow white key portion located between black keys is pressed.

Further, since the shape of the keyboard shown on the top sheet 31 is the same as the size of the keyboard of the keyboard instrument,
Practical practice is possible.

Since the seat portion 16 is made of a bendable member, it is possible to practice fingering wherever there is a power source, such as putting it in a case and compactly carrying it. In addition, since a pressure-sensitive sheet is used, a thin sheet can be obtained with almost no stroke.

[0057]

As described above in detail, according to the present invention, since the electronic sound corresponding to the pressed key is reliably produced,
Operation mistakes can be easily discriminated, and it is possible to practice more practically with interest. In addition, since a headphone can be used and the volume can be controlled, it is possible to provide a fingering practice sheet for a keyboard instrument which is suitable for night practice.

Also, since the fingering practice sheet of the present invention is made of a bendable member, it can be easily folded and stored and carried easily, and can be practiced anywhere where there is a power source, regardless of the location. .

[Brief description of the drawings]

FIG. 1 is a diagram illustrating the overall configuration of a fingering practice sheet according to the present invention.

FIG. 2 is an external view showing a configuration of an embodiment of a fingering practice sheet according to the present invention.

FIG. 3 is a diagram illustrating a configuration of a sheet portion of the fingering practice sheet according to the present invention.

FIG. 4 is a diagram illustrating a configuration of a pressure-sensitive rubber sensor and electrodes of a fingering practice sheet according to the present invention.

[Explanation of symbols]

Reference Signs List 1 pressure-sensitive rubber sensor 2 detection circuit (detection means) 3 sound source circuit (sound generation means) 4 waveform memory 5 D / A converter 6 amplifier 7 headphones or speaker 11 CPU 12 ROM 13 RAM 14 I / F 15 MIDI OUT 16 sheet section 17 Sound source section (detection circuit, CPU, ROM, RAM, sound source circuit, waveform information memory, D / A converter) 21 Waveform information memory (waveform information storage means) 22 Volume control (volume control means) 31 Surface sheet 32 Printed circuit board 33 Bottom sheet 34 electrodes

Claims (7)

[Claims] 1. A surface sheet on which a key pattern of a keyboard instrument is displayed, and electrodes formed corresponding to the key pattern of the surface sheet are attached to upper and lower surfaces, and an electrode on the upper surface contacts the surface sheet. A pressure-sensitive rubber sensor that generates a signal corresponding to the pressure applied to the electrode corresponding to the pressed key pattern; and a sensor that is provided in contact with each electrode on the lower surface of the pressure-sensitive rubber sensor. A sheet portion having a printed circuit board for transmitting a signal generated by the pressure rubber sensor to a detecting device, and a detecting device for detecting on / off of a key based on a signal sent from the printed circuit board; Waveform information storage means for storing waveform information read out based on a detection result; and reading and issuing predetermined waveform information from the waveform information storage means based on a signal sent from the detection means. Keyboard instrument of the fingering practice sheet which is characterized by comprising a sound generator section, a having a sound means, the that. 2. The fingering practice sheet for a keyboard instrument according to claim 1, wherein a pattern of a keyboard of an actual size is displayed on a surface sheet of the sheet portion. 3. The fingering practice sheet for a keyboard instrument according to claim 1, wherein the printed circuit board of the sheet portion is a flexible printed circuit board that can be bent. 4. A fingering practice sheet for a keyboard instrument according to claim 1, wherein said sheet portion and said sound source portion are integrally formed. 5. The fingering training sheet for a keyboard instrument according to claim 1, wherein the sheet section and the sound source section are configured independently of each other and used by being connected by a connector. 6. The sheet unit has a function of outputting MIDI OUT information.
The fingering practice sheet for a keyboard instrument according to any one of claims 1 to 5, wherein the tone is connected to the N terminal, and the musical sound is generated using a sound generation function of an external device. 7. A signal output from said sound generating means is controlled by a volume control means.
7. A fingering practice sheet for a keyboard instrument according to any one of items 1 to 6.