JPH05333855A - Sound generation designating device of electronic musical instrument - Google Patents

Abstract

PURPOSE:To make a quick sound generation designation simulating a stroke playing method, through easy operation by providing an operation element which is movable in a specific direction as an operation element corresponding to, for example, a keyboard, and detecting the position where the operation element is moved and generating keying information corresponding to the detected position. CONSTITUTION:A base 10a fitted with the operation rod 10b of the operation element 10 is supported by a gimbals mechanism and at a specific position of the base 10a, a variable resistor 11 which has a different resistance value corresponding to the inclination by the rotation of the rod is provided. The signal from the variable resistor 11 is supplied to a level detecting circuit 12, whose position detecting circuit detects the rotational position of the operation rod 10b from the voltage from the variable resistor 11. Then the level detecting circuit 12 generates pieces S1 and S2 of keying information on the basis of a detected level and supplies them to a musical sound generation system 13. A musical sound generation system 13 generates a musical sound signal according to the pieces S1 and S2 of keying information and generates a musical sound according to the musical sound signal.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sounding instructing device for an electronic musical instrument for instructing a sound to be sounded.

In recent years, electronic musical instruments such as electronic pianos, electronic organs, keyboards, etc. have been developed and have come into widespread use. In such an electronic musical instrument, a keyboard device is generally used as a sounding instruction device.

The keyboard device is very excellent as a sounding instruction device and has been used for various musical instruments since ancient times. However, since there is a case where a high-speed continuous sounding instruction is required depending on the musical composition, a sounding instruction device capable of giving a higher-speed sounding instruction by a simple operation as compared with a keyboard device is desired.

[0004]

2. Description of the Related Art Conventionally, a keyboard type keyboard device has been generally used as a sounding indicating device used in an electronic musical instrument.

This keyboard device instructs the generation of a predetermined sound by pressing a predetermined key. Strictly speaking, one sound is generated by two operations of pressing and releasing the key. Has been realized.

On the other hand, in a normal electronic musical instrument, it is possible to perform with a tone color that simulates the sounds of various musical instruments.
Generally, a musical instrument generates a unique tone color by playing with a playing style according to its structure. Therefore, for example, when playing with the tone of the guitar, there is a case where it is desired to give the atmosphere of playing with the stroke playing style of the guitar.

However, it is a great burden for a player of the keyboard device to simulate a stroke playing method in which a plurality of tones are continuously produced in a short time by using the conventional keyboard-type keyboard device. However, there is a drawback that it is impossible to perform a performance imitating the stroke playing method.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object thereof is to provide a sounding instruction device for an electronic musical instrument which can give a quick sounding instruction simulating a stroke playing style by a simple operation. To do.

[0009]

In order to achieve the above-mentioned object, the electronic musical instrument sounding instruction device of the present invention comprises an operating member that is movable in a predetermined direction and a position where the operating member is moved. It is characterized by comprising a detecting means for detecting and a generating means for generating key depression information in accordance with the position of the operator detected by the detecting means.

[0010]

According to the present invention, for example, as an operator corresponding to a keyboard in a conventional keyboard musical instrument, an operator which is movable in a predetermined direction is provided, the position where the operator is moved is detected, and the detected position is detected. The key depression information is generated accordingly.

As a result, by moving the manipulators in a predetermined direction, the positions of the manipulators are detected one after another, and the key depression information is generated according to the detected position information. A quick sounding instruction can be given by a simple operation of moving the sound in a predetermined direction, and a musical sound can be generated by an operation similar to a stroke playing method of a guitar, for example.

[0012]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a diagram schematically showing a configuration in which a joystick is used as an operator in the sounding instruction device according to the present invention.

In the figure, reference numeral 10 is an operator, which is constructed by supporting a base body 10a to which an operating rod 10b is attached by a gimbal mechanism. The operating rod 10b is configured to rotate in the AB direction shown in the drawing when a force is applied, and to return to a predetermined home position in a non-operated state.

At a predetermined portion of the base body 10a of the operator 10,
A variable resistor 11 is provided which can obtain different resistance values depending on the inclination caused by the rotation. The variable resistor 11 is
It is composed of a resistance element 11a fixed to a rotating base body 10a and a fixed slider 11b in contact with the resistance element 11a (see FIG. 2). This variable resistor 11
The signal from is supplied to the level detection circuit 12.

The level detection circuit 12 includes the variable resistor 1 described above.
The signal from 1 is input and the level of the signal is detected. The level detection circuit 12 generates key pressing information S1 and S2 based on the detected level and supplies the key pressing information S1 and S2 to the tone generation system 13.

The musical tone generating system includes the key depression information S1,
It is a well-known device that generates a musical tone signal according to S2 and a musical tone according to the musical tone signal.

FIG. 2 shows a specific configuration of the level detection circuit 12. This level detection circuit 12
In addition to the variable resistor 11, the resistors R1 and R2, an operational amplifier 20, an operational amplifier 21, a position detection circuit 22, and a conversion circuit 23 are provided.

In the following description, the power supply voltage Vcc is described as 5 V for convenience, but the present invention is not limited to this and may be any voltage according to the drive voltage of the elements constituting the circuit.

The resistors R1 and R2 are inserted and connected in series between the power supply Vcc and the ground GND. These resistors R1 and R2 are composed of a plurality of resistors, as will be described later, and are used to create a reference voltage for comparison with the output voltage from the variable resistor 11.

The midpoint voltage divided by the resistors R1 and R2 is supplied to the operational amplifier 20. Therefore, the voltage of 2.5 V is applied to the operational amplifier 2
Will be supplied to zero.

The operational amplifier 20 constitutes a voltage follower and is used as a buffer. The output of the operational amplifier 20 is connected to the middle point of the resistance element 11a of the variable resistor 11.

As a result, the middle point of the variable resistor 11 is 2.
When a voltage of 5 volts is supplied and the operating rod 10b is at the home position, the potentials of the midpoint of the variable resistor 11 and the connection point of the resistors R1 and R2 are made to accurately match. .. With this configuration, the error of the resistor is absorbed.

The signal output from the slider 11b of the resistor 11 is supplied to the operational amplifier 21.
This operational amplifier 21 also constitutes a voltage follower and is used as a buffer. The output of the operational amplifier 21 is supplied to the position detection circuit 22.

The position detection circuit 22 detects the rotational position of the operating rod 10b by the voltage from the variable resistor 11 which is output according to the rotational position of the operating rod 10b. Details of the position detection circuit 22 will be described later.
The output of the position detection circuit 22 is supplied to the conversion circuit 23.

The conversion circuit 23 converts a signal relating to the position detected by the position detection circuit 22 into key depression information S1 and S2. The key depression information S1 and S2 output by the conversion circuit 23 is supplied to the musical tone generation system 13 to generate musical tones.

FIG. 3 is a circuit diagram showing detailed circuits of the position detection circuit 22 and the conversion circuit 23.

In the figure, R1 _{1 to} R1 ₄ and R2 ₁ to
R2 ₄ are each fixed resistor, the resistance value of each resistor is the same value. These resistors R1 _{1 to} R1 ₄ and R2 _{1 to} R2 ₄ are connected in series between the power supply Vcc and the ground GND.

Therefore, when the power supply voltage Vcc is 5 volts, V ₁ is 4.5 volts, V ₂ is 4.0 volts, V ₃ is 3.5 volts, V ₄ is 3.0 volts, and V _{5 is} As V ₆ , 2.0 V as V ₆ , 1.5 V as V ₇ , 1.0 V as V ₈ , and 0.5 V as V ₉ .

The voltage V _{5 of} 2.5 volts obtained from the connection point of the resistors R1 ₅ and R2 ₁ is supplied to the midpoint of the variable resistor 11 via the operational amplifier 20 as described above. Is becoming

22 _{1 to} 22 ₈ are comparators (COM
P). The voltages V _{1 to} V ₄ are supplied to _one input terminal (−) of each of the comparators 22 _{1 to} 22 ₄ , and the voltage from the variable resistor 11 is supplied to the other input terminal (+) of the operational amplifier 21. Is commonly supplied via.

The result of comparison by each of the comparators 22 _{1 to} 22 ₄ is output as an active signal at the L level.

Therefore, the output of the operational amplifier 21 from the comparator 22 ₁ is V ₁ = by operating the variable resistor 11.
When the voltage exceeds 4.5 volts, an L level signal is output. Similarly, from the comparator 22 ₂ , V ₁ = 4.
When the voltage is 0 V or more, the comparator 22 ₃ outputs V ₁ = 3.5 V or more, and the comparator 22 ₄ outputs V ₁ = 3.0 V or more when the L level is low. The signal is output.

The above-mentioned voltages V _{6 to} V ₉ are supplied to one input terminals (+) of the comparators 22 _{5 to} 22 ₈ respectively, and the variable resistor 11 is supplied to the other input terminal (-).
Is commonly supplied through the operational amplifier 21.

The result of comparison by each of the comparators 22 _{5 to} 22 ₈ is also output as an active signal at the L level.

Therefore, from the comparator 22 ₅ , the output of the operational amplifier 21 is V ₆ = by operating the variable resistor 11.
When the voltage drops to 2.0 V or less, an L level signal is output. Similarly, from the comparator 22 ₆ , V ₇ = 1.
When the voltage is 5 V or less, the comparator 22 ₇ outputs V ₈ = 1.0 V or less, and the comparator 22 ₈ outputs V ₉ = 0.5 V or less, the L level is low. The signal is output.

The outputs of these comparators 22 _{1 to} 22 ₈ are supplied to the conversion circuit 23.

The conversion circuit 23 receives the signal from the position detection circuit 22 and generates key depression information. That is, the signal S1 corresponding to the first switch of the key and the signal S2 corresponding to the second switch of the well-known keyboard device are output as the key depression information. The figure shows a configuration for outputting key depression information a and b corresponding to two keys.

The conversion circuit 23 logically operates the outputs from the comparators 22 _{1 to} 22 ₈ of the position detection circuit 22 4
It is composed of two NAND gates 23 ₁ to 23 ₄ . This logic circuit operates as shown in FIG. 5 according to the output signals from the comparators 22 _{1 to} 22 ₈ of the position detection circuit 22.

For example, when the operating rod 10b is rotated, the relative position between the resistance element 10a of the variable resistor 11 and the slider 11b is moved, and a voltage of 4.25 volts is obtained from the operational amplifier 21. Then, the comparators 22 ₂ and 2
The outputs of 2 ₃ and 22 ₄ become L level. Therefore, N
The outputs of the AND gates 23 ₂ , 23 ₃ and 23 ₄ become H level, and the signals S1 and S2 of the key pressing information a and the signal S1 of the key pressing information b become H level, respectively.

The level detection circuit 12 described above is operated by the operator 10.
By rotating the operation rod 10b, the same function as when the key of the keyboard device is pressed is exhibited. The level detection circuit 1 will be described with reference to the function explanatory diagram of the operator shown in FIG.
The operation of generating key depression information will be described with reference to 2.

When the operating rod 10b is at the home position P0, the voltage obtained from the variable resistor 11 via the operational amplifier 21 is 2.5 volts. At this time, the signals S1 and S2 of the key depression information a and b are both at the L level, indicating that the key is not operated. In this state, the operating rod 10
The range of positions P11 to P21 of b, that is, the output voltage of the operational amplifier 21 is maintained in the range of 2.0 to 3.0.

From this state, when the operating rod 10b is rotated, for example, in the direction A in FIG. 4 to reach the position P11, the output from the operational amplifier 21 becomes 3.0 V or more, and the signal of the key depression information a. S1 goes high. This state corresponds to a state in which the key corresponding to the key depression information a is pressed and the first switch is turned on.

When the operating rod 10b is further rotated in the direction A in FIG. 4 to reach the position P12, the output from the operational amplifier 21 becomes 3.5 V or more, and the signal S of the key depression information a.
2 becomes H level. This state corresponds to the state in which the key corresponding to the key depression information a is pressed and the second switch is turned on.

As described above, when a predetermined key is pressed in the keyboard device, the signals S1 and S2 indicating the key pressing information a equivalent to that obtained from the first and second switches of the key.
Is obtained.

From this state, the operating rod 10b is further moved to the position shown in FIG.
When it is rotated in the middle A direction to reach the position P13, the output from the operational amplifier 21 becomes 4.0 V or more, and the signal S1 of the key pressing information b becomes H level. This state corresponds to a state in which the key corresponding to the key depression information b is pressed and the first switch is turned on.

When the operating rod 10b is further rotated in the direction A in FIG. 4 to reach the position P14, the output from the operational amplifier 21 becomes 4.5 V or more, and the signal S of the key pressing information b.
2 becomes H level. This state corresponds to the state in which the key corresponding to the key depression information b is pressed and the second switch is turned on.

As described above, by depressing another predetermined key in the keyboard device, signals S1 and S2 indicating other key depression information b equivalent to those obtained from the first and second switches of the key. Is obtained.

The operation when the operation rod 10b described above is rotated is exactly the same when the operation rod 10b is rotated in the direction B in FIG.

In this way, by rotating the operating rod 10b of the operating element 10, key depression information similar to that obtained when keys are continuously depressed can be obtained. By the way, in the above-described embodiment, the operation of rotating the operation rod 10b in the predetermined direction is much easier than the operation of sequentially pressing each key of the keyboard device.

That is, the operating rod 10b can be rotated by the same operation as in the case of performing the stroke playing method of a guitar. Therefore, the electronic musical instrument can be played in the same atmosphere as when playing a guitar, as well as a quick operation such as the stroke method.

In the above embodiment, two key depression information a
Although the configuration for generating b and b has been described, the number of key pressing information is not limited to the above. That is, the number of resistors for dividing the power supply voltage is arbitrarily determined, a comparator is provided according to the number of resistors, and the signal obtained from each comparator is converted into key depression information by the same method as described above. If configured, it can be configured to obtain an arbitrary number of key depression information.

Further, in the above embodiment, the joystick which rotates in one direction AB has been described as the operator, but a joystick which rotates in two directions of CD and EF may be used as shown in FIG. In this case, since it is possible to obtain twice as much information as the position information of the operating rod as in the case of the above embodiment, there is an advantage that a large number of key pressing information can be generated.

Further, although the operation rod of the joystick is provided in the one direction or the direction intersecting with the one direction, it may be configured to rotate in any other direction.

Further, a bender may be used as the operation element, and in this case, the same operational effect as that of the above-described embodiment can be obtained.

[0056]

As described above in detail, according to the present invention, it is possible to provide a sounding instruction device for an electronic musical instrument which can give a quick sounding instruction by simulating a stroke rendition style with a simple operation.

[Brief description of drawings]

FIG. 1 is a diagram schematically showing a configuration of a sounding instruction device according to the present invention.

FIG. 2 is a block diagram showing a configuration of a level detection circuit according to the present invention.

FIG. 3 is a circuit diagram showing a configuration of a position detection circuit and a conversion circuit included in a level detection circuit according to the present invention.

FIG. 4 is a diagram for explaining a function of an operator of the present invention.

FIG. 5 is a diagram for explaining the operation of the level detection circuit of the present invention.

FIG. 6 is a diagram showing the configuration of another embodiment of the present invention.

[Explanation of symbols]

 10 Operators 11 Variable Resistors 12 Level Detection Circuits 22 Position Detection Circuits (Detection Means) 23 Conversion Circuits (Generation Means)

Claims (3)

[Claims] 1. An operator provided so as to be movable in a predetermined direction, detection means for detecting a position to which the operator is moved, and a key press depending on the position of the operator detected by the detection means. A pronunciation instruction device for an electronic musical instrument, comprising: a generation unit that generates information. 2. The sound production instructing device for an electronic musical instrument according to claim 1, wherein the operator is a joystick. 3. The sounding instruction device for an electronic musical instrument according to claim 1, wherein the operator is a vendor.