JP2541045Y2 - Music control device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic musical instrument, and more particularly to a musical tone control device capable of accurately expressing a subtle emotional expression of a player in a musical tone by operating an operator. .

[0002]

2. Description of the Related Art An electronic musical instrument basically controls sound generation by opening and closing a key switch by depressing a key. However, the performance of the electronic musical instrument alone is monotonous and expresses a delicate emotion of a player. Can not. Accordingly, various techniques have been developed to provide a so-called touch response function in order to change the sounding characteristics according to the difference in the force at the time of key depression to enable emotional expression. This touch response function applies the touch control by controlling the volume, pitch, tone, etc. of the generated musical tone in accordance with the rise of the key and the movement of the player's finger in the sustained state of the sound after the key is pressed. That is. Such fine-grained touch control based on the manner in which a player performs a key press operation has conventionally been performed, for example, as in an electronic musical instrument disclosed in Japanese Patent Application Laid-Open No. 2-214897.
By performing digital signal processing, a device that can be realized at a low cost with a simple configuration with little increase in hardware has been developed. In the case of this conventional electronic musical instrument, a key depressing position that is displaced in accordance with the movement of a player's finger is relatively displaced by a key depressing a magnet and a coil. , And generates touch response data based on a large number of pulses corresponding to the output. The musical tone parameters such as the volume, pitch and tone of the musical tone to be generated are determined. However, the demands for the player's expression of emotions are not limited to touch control by pressing and releasing keys in the up and down direction of keys, and the player is required to play on the keyboard as in the case of an electronic musical instrument disclosed in Japanese Patent Publication No. 55-1589. Moving the key to the left or right can affect the sound in some way, such as a vibrato effect such as "Björn" or even a tremolo effect.

[0003]

As described above, in the conventional electronic musical instrument disclosed in Japanese Patent Application Laid-Open No. 2-214897, the amount of movement of the operation element (key) is limited only in the vertical direction. By changing the volume and pitch of the musical tone in a number of steps corresponding to the tone, the musical tone intended by the player (with subtle key touches) can be arbitrarily generated. It is not configured to obtain a performance effect by moving it to the left or right. For this reason, there was a problem that the variability in performance was poor.

In the case of an electronic musical instrument disclosed in Japanese Patent Publication No. 55-1589, the vertical pressing of a key is detected, and the left and right directions on the key are detected by a lamp and a photocell. For this reason, there has been a problem that it is not possible to detect a fine absolute position with respect to the vertical and horizontal movements of the operator.

The present invention has been made in view of the above-mentioned problems of the prior art, and the object thereof is to be detected by the operation of moving the operator up, down, left, right, or obliquely. An object of the present invention is to provide a musical tone control device that can accurately detect displacement of an operating element, change a tone of a musical tone in accordance with a detected position, and perform fine emotional expression of a player. I have.

[0006]

In order to achieve the above object, the musical tone control device of the present invention is provided so as to be displaceable on a musical instrument body.
The operated operator, and any of the operated operator and the musical instrument main body.
A pattern formed two-dimensionally on one of the
And the operator is provided on one of the other of the musical instrument main body and
Moves relative to the pattern with the displacement of
Pattern detection means for detecting a pattern, and the pattern
The position of the operation element is determined based on the pattern detection result of the detection means.
Position detecting means for outputting absolute position information indicating the position,
Based on the absolute position information output by the position detecting means.
And a tone characteristic control means for controlling the characteristics of the sound .

[0007]

[0008]

The term "operator" in this specification means not only a key composed of a white key and a black key of a keyboard in a so-called keyboard electronic musical instrument, but also a push button key, a tread plate of an expression pedal device, a knee lever, and a joystick operation. Including children. Also, "music parameters" refers to volume,
This includes all tone parameters such as tone color, pitch (pitch), tempo, vibrato and tremolo depth and speed.

[0010]

When the operator is moved, the two-dimensionally formed
Turns are detected by the pattern detection means, and based on the detection results,
The position detecting means detects the position of the operation
The tone characteristic control means controls the characteristics of the musical tone in accordance with. By that Misao to move operation of the vertical and horizontal directions, etc. In this way operators
Displacement of sakushi is accurately detected, the tone of the musical tone is changed according to the detected position , and the subtle emotional expression of the performer is performed finely.

[0011]

Embodiments of the present invention will be described below. 1 to 10 show one embodiment of an electronic musical instrument according to the present invention.

In FIG. 1, reference numeral 1 denotes an electronic musical instrument main body. Reference numeral 2 denotes a key which is an operation element. The key 2 is integrally formed of, for example, a synthetic resin, and is provided with a protruding piece 2b on the lower surface near the key pressing portion 2a. Although the structure in the case where the key 2 is a white key has been described, the same configuration can be applied to the case where the key 2 is a black key. Numeral 3 is an electronic circuit, and numeral 5 is an absolute position information generating means of the operator. Key 2 detected by the absolute position information generating means of this operator
A musical tone is emitted from the speaker 4 with musical tone parameters corresponding to the absolute position of the (operator).

FIG. 2 shows a state in which the key 2 is mounted on the electronic musical instrument main body 1. In the figure, reference numeral 6 denotes an upper case of the electronic musical instrument main body 1, and reference numeral 7 denotes a lower case of the electronic musical instrument main body 1. The key 2 is provided on a rib of a lower case 7 (not shown) so as to be rotatable around a rotation shaft 8. The upper case 6 is provided with a pressing spring 9, which constantly presses the mounting end 2 c of the key 2 in the direction indicated by the arrow A. A rib 10 is provided on the lower surface of the key 2. As shown in FIG. 3, the rib 10 is provided with a convex portion 11 that protrudes toward the inside of the electronic musical instrument main body 1 at a substantially central portion. . This rib 10
Has a thickness of about 1 mm and bends to some extent in the direction shown by arrow B. Reference numeral 12 denotes a unit-shaped film substrate attached to the upper surface of the rib 10. This film substrate 12 has four sensors 14, 15, 16, 17 mounted on a polyimide resin 13 in a cross shape.
A copper foil 18 connected to the sensors 14, 15, 16 and 17 and wired on a polyimide resin;
4, 15, 16, and 17, and a highly wear-resistant paint 19 applied to the upper surface. As shown in FIG. 2, the unit-shaped film substrate 12 passes through the inside of the key 2 and is drawn out to the lower surface of the key 2. A lead wire is connected to the copper foil 18, and the lead wire is connected to the copper foil 18. Are connected to the electronic circuit 3. These sensors 14, 15, 1
Reference numerals 6 and 17 each include a magnetoresistive element that outputs an electric signal indicating “1” in the case of the N pole and outputs an electric signal indicating “0” in the case of the S pole.

Reference numeral 20 denotes a detector of the operator absolute position information generating means 5 which is detachably attached to the lower case 7. As shown in FIG. 4, the detector 20 is constituted by a laminated magnet formed by laminating plate-shaped permanent magnets. The magnetized state of each magnetic pole on the magnetic pole surface of the laminated magnet constituting the detector 20 is as shown in FIG. In the figure, ○ indicates the N pole, and the others indicate the S pole. Also,
The magnetic pole surface of this laminated magnet is magnetized according to a specific method, as shown in FIG. 5, for example. , 15, 16, 17 are detected. The magnetized state of the magnetic pole surface of the laminated magnet is determined by four sensors 1
4, 15, 16, 17
Is detected.

The sensors 14, 15, and 1 are located at positions facing the magnetic pole surfaces of the laminated magnets constituting the detector 20.
6 and 17 are configured to slide and move. Each of the sensors 14, 15, 16, 17 is connected to the detector 2
The magnetized state of one magnetic pole portion of the 0 laminated magnet magnetic pole surface is detected. That is, the sensors 14, 1
Each of 5, 16, and 17 is formed in a size corresponding to one magnetized portion of the laminated magnet of the detector 20. In the sensors 14, 15, 16, and 17, one magnetized portion of the magnetic pole surface of the laminated magnet of the detector 20 is N
In the case of a pole, it is detected as "1" (HIGH), and in the case of an S pole, it is detected as "0" (LOW). Therefore, when the sensors 14, 15, 16, and 17 are located at the location indicated by the dashed line A in FIG.
Signals (1, 1, 0, 1) are output from 4, 15, 16, and 17, respectively. Thus, the sensors 14, 15, 1
Reference numerals 6 and 17 can detect the four magnetized portions of the laminated magnet of the detector 20 as one unit. The detection by the sensors 14, 15, 16, and 17 is performed while moving over the laminated magnet of the detector 20.

The playing method by pressing the key includes not only the playing method in which the key 2 is moved up and down as shown by the arrow C in FIG. 7, but also the sound 2 as shown by the arrow D in FIG. There is a moving playing method. Further, there is a performance method in which the key 2 is moved in the left-right direction as shown by the arrow D in FIG. 8 while moving the key 2 in the up-down direction as shown by the arrow C in FIG. Therefore, the sensors 14, 15, 16 and 17 are located at the positions indicated by the alternate long and short dash line A to the alternate long and short dash line B in FIG. Let's say you have moved to the position. Then, the sensors 14, 15, 16, 1
7 is (1, 1) as shown by the dashed line A in FIG.
From the signal (1, 0, 1), a signal (0, 0, 1, 0) as shown by a dashed line B in FIG. 6 is output. Therefore, from the sensors 14, 15, 16, 17 (0, 0, 1,
0) is output, the sensor 14,
5 have moved from the position of the dashed-dotted line A in FIG. 5 to the position indicated by the dashed-dotted line B in the direction of 45 ° in the upper right direction by one magnetized portion of the laminated magnet magnetic pole surface of the detector 20. To detect. Further, when the sensors 14, 15, 16 and 17 move to the position in the direction of 45 ° in the upper right direction by one magnetized portion of the laminated magnet magnetic pole surface of the detector 20, the corresponding signals in FIG. . The sensors 14, 15, 16 and 17 are located at positions indicated by the dashed line A to the dashed line C in FIG. Suppose you moved to Then, the signals from the sensors 14, 15, 16, and 17 are changed from the signal (1, 1, 0, 1) as shown by the one-dot chain line A in FIG.
(1, 0, 0, 0) as shown by the dashed line C in FIG. Therefore, the sensors 14, 15, 16, 1
By outputting a signal of (1, 0, 0, 0) from the sensor 7, the sensors 14, 15, 16, 17 are attached from the position of the dashed line A in FIG. It is detected that one magnetic part has moved to the position shown by the dashed line C in the direction of 45 ° at the lower left. Further, the sensors 14, 1
When 5, 16, and 17 move to a position in the direction of 45 ° in the lower left direction by one magnetized portion of the laminated magnet magnetic pole surface of the detector 20, a corresponding signal in FIG. 6 is similarly detected. The same applies to the case of detecting the amounts of movement of the sensor positions by the sensors 14, 15, 16 and 17 in the vertical and horizontal directions.

FIG. 9 shows a detailed circuit of the electronic circuit 3 of FIG. In the figure, sensors 14, 15, 16,
The signal output from 17 is subjected to waveform shaping in a waveform shaping circuit (not shown) constituting the controller absolute position information generating means 5, and is input to the CPU 21. This CP
U21 has a function of decoding the operator position information output by the operator absolute position information generating means 5 as the absolute position of the operator based on the operation of the key 2. 2
Numeral 2 denotes a ROM which stores data on the position of each operating element corresponding to each magnetized portion of the magnetic pole surface of the laminated magnet.
This is a RAM that stores the operation element position information output from the sensors 14, 15, 16, and 17. Reference numeral 24 denotes a sound source that operates in response to a control command from the CPU 21 and outputs a tone signal in which sound generation, tone change, and the like are performed. An amplifier 25 amplifies a tone signal output from the sound source 24.
Is a speaker that emits sound by the tone signal amplified by the amplifier 25.

FIG. 10 shows an operation flowchart. That is, in step 100, the CPU 2
1 determines whether or not the key depression is started. That is, it is determined whether the key 2 is pressed. The depression of the key 2 is determined by the detection signals of the sensors 14, 15, 16, and 17. That is, when the key 2 is pressed, the sensors 14, 1
The signals (1, 1, 0,
1) (see dashed line A in FIG. 6), for example,
The change occurs as (0, 0, 1, 0), (0, 0, 0, 1), or (0, 0, 1, 1). Thus, when the detection signals of the sensors 14, 15, 16, 17 change, it is determined that the key 2 has been pressed. Therefore,
In this step 100, the sensors 14, 15, 1
The detection operation is repeated until the signals output from 6 and 17 change and it is detected whether or not the key 2 is depressed.
When the key 2 is detected to be depressed in step 100, in step 110, the CPU 21
The sound source 24 outputs the sound of the musical scale corresponding to the key 2 that has been depressed to the amplifier 25 and emits the sound from the speaker 4. Then, in step 120, the sensor 1 is turned on every predetermined time (for example, 1 msec).
The absolute position information output from 4, 15, 16 and 17 is read. In this step 120, the sensor 1
The absolute position information output from 4, 15, 16, 17 is R
After being written to AM23, the absolute position information and ROM
The controller position information stored in the storage unit 22 is compared with each other, and if they match each other, in Step 130 relating to the match,
The absolute position information is output to the sound source 24, and based on the absolute position information, the tone generated after the sound is modulated. That is, the sound being emitted is modulated. After transmitting the absolute position information in step 130, it is determined in step 140 whether the key is released. The determination as to whether or not the key has been released is made by determining whether the absolute position information output from the sensors 14, 15, 16, 17
This is performed depending on whether or not the position information matches the operation device position information obtained from. If it is determined in step 140 that the key has not been released, the process returns to step 120. Step 14
0, if it is determined that the key has been released, in step 150, the CPU 21 stops the sounding command signal output to the sound source 24, and outputs the tone corresponding to the key 2 that has been pressed from the speaker 4 via the amplifier 25. Stops outputting the output sound. Then, the process returns to step 100.

[0019]

[Effect of the Invention] According to the musical sound control device of the present invention, the operating element
And a pattern detecting means provided on one of the other of the instrument body
When the step is displaced, either the control or the instrument
Relative to the two-dimensionally formed pattern
To detect the pattern, and the pattern detection result
Position information indicating the position of the operator based on the position
Means outputs the tone characteristic control based on the absolute position information.
Since control means is configured to control the characteristics of a musical tone, by the upper and lower operator, left and right, or move operation in the diagonal direction
Accurately detects the displacement of the actuator, and according to the detected position ,
Can Ru by changing the parameters of the tone, it is possible to perform the delicate emotional expression of the performer finely.

[Brief description of the drawings]

FIG. 1 is an overall configuration diagram showing an embodiment of an electronic musical instrument according to the present invention.

FIG. 2 is a cross-sectional view of the keyboard portion of FIG.

FIG. 3 is an overall configuration diagram of a detection unit in FIG. 1;

FIG. 4 is an overall configuration diagram of a detected part shown in FIG. 1;

FIG. 5 is an enlarged view of a part of a magnetized state of the laminated magnet illustrated in FIG. 4;

FIG. 6 is a diagram illustrating a signal state when a detected portion in FIG. 5 is detected by a sensor.

FIG. 7 is a diagram showing a vertical movement of a key.

FIG. 8 is a diagram showing a left-right movement of a key.

FIG. 9 is an electronic circuit configuration diagram for changing musical tone parameters in multiple stages based on operator position information generated by an operator absolute position information generator.

FIG. 10 is an operation flowchart of the circuit shown in FIG. 9;

[Explanation of symbols]

1 …………………………………………………………………………………………………………… Key 3 …………………………… ………………………………………………………………………………………………… Speaker 5 ……………………………………………………………………………………………………………………………. ……………………… Rib 12 ……………………………… Film substrate 14, 15, 16, 17… Sensor 20 …… ……………………………………………………………………………………………………………………………………………………… CPU 24

Claims (3)

(57) [Scope of request for utility model registration] An operator provided on a musical instrument body so as to be displaceable.
And one of the operator and the instrument body in two dimensions.
A formed pattern , provided on one of the other of the operator and the instrument body,
Relative to the pattern with the displacement of the operator
A pattern detecting means for detecting the pattern by moving , based on a pattern detection result of the pattern detecting means;
Position detection that outputs absolute position information indicating the position of the operator
Means , based on the absolute position information output by the position detecting means.
Characteristic control means for controlling the characteristics of musical sounds
A tone control device characterized by the following. 2. The apparatus according to claim 1 , wherein said pattern detecting means includes :
Provided, said pattern, characterized in that formed on the instrument body
The musical tone control device according to claim 1, wherein 3. The pattern emits two types of magnetism.
Each of the plurality of materials is arranged in a predetermined pattern, and the pattern detecting means has an element for detecting magnetism.
Musical tone control apparatus according to claim 1, characterized in that.