JPH02173792A - Musical sound control mechanism for electronic musical instrument - Google Patents

Abstract

PURPOSE:To easily adjust various musical sounds by providing the musical sound control roll bar of the electronic musical instrument in front of a keyboard and selecting a control function of the roll bar. CONSTITUTION:The wheel (roll bar) 3 for musical sound control which is a cylindrical rotary body having a rotary shaft is divided into two and provided along a keyboard 2 in front of the keyboard 2 and this roll bar 3 is used to control a musical sound such as timbre, pitch, and loudness according to the keyboard of, for example, a melody part and an accompaniment part. Further, a musical sound control function of the roll bar 3 is selected by pressing a selection button 4 selectively on a operation board 1 to perform desired musical sound control. The function selection button 4 of the roll bar 3 is, for example, buttons on a side 6 and they control solo loudness, orchestra loudness, accompaniment loudness, modulation control, timbre control, and total loudness. Then while the keyboard 2 is operated with the right and left hands, the roll bar 3 is rotated with the palms of the hands to control the musical sound corresponding to respective keyboards according to the function selected with the selection button. Consequently, the musical sound control as to respective function is easily performed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an electronic musical instrument, and particularly to a musical tone control mechanism for adjusting volume, etc. during performance.

[Prior Art] Various electronic musical instruments have been developed that are equipped with a sound source oscillator, an acoustic waveform shaper, an amplifier, a speaker, and various electronic control circuits, and generate electronic sounds by operating various buttons on a keyboard and an operation board. . In such electronic musical instruments, it is necessary to adjust the musical tone, such as the timbre, pitch, and volume of the electronic sound generated, and such musical tone adjustment can be adjusted in accordance with the keyboard area such as the melody section and accompaniment section. is desirable.

As a musical tone control mechanism of a conventional electronic musical instrument, an electronic musical instrument with a rotary volume control device installed along the keyboard was developed in 1983.
It is disclosed in Japanese Patent No. 270.

In this conventional electronic musical instrument, a single cylindrical volume control body that is slightly longer than the length of the keyboard is installed along the keyboard, and by rotating this volume control body by hand, the volume can be adjusted as well as the keyboard operation with the same hand. It is configured as follows.

[Problems to be Solved by the Invention] The rotary musical tone control means provided along the keyboard of the conventional electronic musical instrument controls only the volume, and does not control the tone, color, or tone.
It is not possible to control pitch and other musical tone functions, and when making these adjustments, it is necessary to provide more than one control mechanism, complicating the structure of the musical instrument.

The present invention has been made in view of the above-mentioned drawbacks of the prior art, and it is an object of the present invention to provide a musical tone control mechanism for an electronic musical instrument that allows musical tone control for various functions to be easily performed without complicating the structure.

[Means for Solving the Problems] In order to achieve the above object, in the electronic musical instrument according to the present invention, a rotating body for musical tone adjustment operation having a rotating shaft along the keyboard arrangement direction is provided on the near side of the keyboard, and It is equipped with a rotating body adjustment function selection means.

[Function] For example, the adjustment function of the rotating body is set using a selection switch button or the like on the operation board, and based on the selected function, musical tone control is performed in accordance with the amount of rotation of the rotating body.

Embodiment FIG. 1 is a top view of an embodiment of an electronic musical instrument according to the present invention. The musical instrument main body 5 consists of an operation board section 1 and a keyboard 2, various operation buttons 10 are provided on the operation board section 1, and the keyboard 2 is provided on the front side thereof. On the front side of the keyboard 2, a tone control wheel (roller) 3, which is a cylindrical rotating body having a rotating shaft, is provided along the keyboard 2 and is divided into two pieces. This rollper 3 adjusts musical tones such as timbre, pitch, volume, etc., depending on the keyboard of the melody section and the accompaniment section, for example. In this embodiment, the shorter rollper 3 on the left side controls the musical tone of the accompaniment section, and the longer rollper 3 on the right side controls the musical tone of the melody section. The selection of the musical tone adjustment function of the rollper 3 is performed by selecting and pressing the selection button 4 on the operation board 1, thereby making it possible to adjust the musical tone as desired.

The function selection buttons 4 of the rollper 3 are, for example, six buttons, and are used to adjust solo volume, orchestra volume, accompaniment volume, modulation control, timbre control, and total volume.

To explain the functions of each of these buttons, solo volume controls the volume of single notes such as melody performances, orchestra volume controls the volume of chords, accompaniment, and other sounds other than solo sounds.
The accompaniment volume controls the volume of the rhythm sound, the modulation control adjusts the transposition, the timbre control adjusts the quality of each note, and the total volume can be adjusted for solo, orchestral,
This controls the volume of the overall accompaniment sound. Such tone adjustment function selection means may be added to only one of the two divided rollpers (for example, the rollper in charge of the melody section on the right side of FIG. 1), and the functions of the other rollpers may be fixed (for example, pitch control).

During the performance, as shown in Figure 2, while operating the keyboard 2 with the left and right hands, the rollper 3 is rotated with the center of the count to adjust the musical tone based on the function selected with the selection button corresponding to each keyboard. do.

FIG. 3 is a sectional view of the electronic musical instrument having the above structure.

The roll par 3 is disposed with the front side and top surface of the frame 11 of the musical instrument main body 5 exposed.

A rotary volume 6 is attached to the end of the roll par 3. Rotation of the rollper 3 causes the rotary volume 6 to rotate, and the musical tone is controlled via an electronic circuit (not shown) based on a change in resistance depending on the amount of rotation. Note that rotation detection of the roll par 3 is not limited to the rotary volume, and other suitable means such as detection of a change in light amount using a photoresistor, detection of a change in magnetism, etc. can be used.

FIG. 4 shows another example of the arrangement of the roll per 3 for musical tone adjustment operation. In this example, the rollper 3 is the instrument body 5.
Only the front side of the frame 11 is exposed. Other configurations and operations are the same as the example shown in FIG. 3 above.

Another example of the rotating body for musical tone adjustment operation is shown in FIG. In this example, an operation plate 7 is fixed to a rotating shaft 8 provided along the keyboard 2, and is configured to be rotated in the direction of arrow A using the pad of the hand. In addition, the roll par 3 and the operation board 7
The shape is not limited to a cylindrical or plate-like shape, but may be a polygonal cross section such as a triangle or any other arbitrary cross-sectional shape.

FIG. 6 is a top view of another embodiment of the electronic musical instrument according to the present invention. In this embodiment, the roll per 3 for musical tone adjustment operation is divided into five parts, and is configured to perform finer musical tone adjustment in correspondence with the keyboard. Note that the number of divisions of the rollper 3 is not limited to 2 or 5, but is arbitrary.

FIG. 7 is a schematic block diagram of the basic hardware of the electronic musical instrument according to the present invention. The operation of this electronic musical instrument is controlled by a central processing unit (CPU) 12. The CPU 12 includes a keyboard circuit 18 that manually generates multi-digit press signals for each keyboard via a bidirectional path line 17, and a switch group that manually generates press signals for various switches including a roll bar function selection button on the operation board (panel). 19. a roll bar rotation detection circuit 20 and an A/D converter 13 connected thereto;
An electronic sound control tone generator 14 and the like are connected. A speaker 16 is connected to the tone generator 14 via an amplifier 15. The CPU 12 includes a register for storing a control program, a read only memory (ROM), and a register for temporarily storing various data for executing the program. The tone generator 14 is provided with a plurality of musical tone forming channels, for example eight, for forming key press sounds, and the tone generator 14 has a plurality of musical tone forming channels for forming key press sounds, and the press 1! Based on data such as (key on), Mll (key off), tone (or type of instrument), and pitch (key name), a musical tone signal is formed to compose an electronic sound, and this is output externally via the amplifier 15 and speaker 16. It is something to be pronounced.

Figure 8 shows the 10th - Luper 21 and 20th divided into two parts.
- This figure shows the hardware of an electronic musical instrument consisting of a roll bar 22, and the configuration other than the two-divided roll bar is the same as the configuration in the block diagram of FIG.

FIG. 9 is a schematic flowchart showing the main flow of the basic operation of the roll bar for musical tone adjustment operation of the present invention based on the hardware shown in FIG. Step a is a key scan operation by keyboard operation, and the generated sound is controlled via the tone generator 14 in response to each pressed key. Step b is a panel switch scanning operation in which the CPU 12 scans the suppression of each switch button on the operation board (panel) via the switch group 19, and includes the aforementioned scanning operation of the roll bar function selection button. Step C is an operation for manually inputting tone parameters and the like to the tone generator 14 in response to the operation of each button on the panel switch, and includes an operation for writing the target identification number of the selected roll bar function to the CPU 12 as described above. Step d is a musical tone control operation using the roll bar, in which the musical tone is controlled based on a predetermined selection function written in the CPU 12 in accordance with the rotation of the roll bar.

FIG. 10 shows the data acquisition operation by rotating the roll bar. First, in step e, the amount of rotation of the roll bar is converted into an AD converter and input into the CPU 12 as digital data. Next, in step f, it is determined whether there is a change in the captured data. If the roll bar is rotating, there is a change; if it is not rotating, there is no change.

If there is no change, the process returns to step a in FIG. 9 and the musical tone control from the key scan is repeated again. When the roll bar is rotating, based on the target specific number writing data of the selected roll bar function (step C in FIG. 9), the input light of the rotation amount data is changed in step g, for example, as described above. It is divided into six functions (numbered 0 to 5). Here, in steps h, . . . , the volume, pitch, tone color, etc. of the solo sound, accompaniment sound, etc. are set based on each selected function according to the amount of rotation of the roll bar. An electronic sound is generated by the musical tone control described above, and the process returns to step a in FIG. 9 to repeat the musical tone control from the key scan again. Note that FIG. 10 shows the flow of musical tone control for one roll bar.

FIG. 11 shows an example of the flow of musical tone control when the roll bar is divided into two. In this example, for example, the 10th lever on the left side of FIG. 1 is used exclusively for pitch control without adding any function selection means, and the 20th lever on the right side is provided with a function selection means using six selection buttons as described above. It was added. First, in step i, AD conversion data corresponding to the amount of rotation of the two roll bars is manually input. In step j, it is determined whether or not there has been a change in the rotation of the tenth lever. If the 10th lever is not rotating, proceed directly to step U. If the 10th lever is rotating, in step k, pitch control is performed by adjusting the waveform frequency of the generated sound, and then the process returns to step 1. Step 1 and subsequent steps are the same as the flow shown in FIG.
In step n O+ n + . . . , musical tones for each of the selected functions are set, and electronic sounds are generated based on these tones.

Furthermore, the first example is an electronic musical instrument in which a key range division SW is provided and the roll bar mechanism is distributed in conjunction with this operation.
This is the flow shown in Figure 2. In this embodiment, the first. Second
The allocation mechanism can be selected independently for each lever. That is,
Regarding the 10th lever, it is determined in step P whether the key range division Sw is ON or not, and if YES, the process moves to step r.

In step r, musical tone control of the selected accompaniment key is performed by the first mechanism Sw. This musical tone control is performed in accordance with the rotation of the tenth lever in the same manner as described above. Regarding the 20th lever, it is determined in step q whether the key range division SW is ON or not, and if Yes, step S is performed.
Move to. In step S, the solo tone volume selected by the second function SW is controlled. In this way,
For example, the first key corresponding to the accompaniment key and solo volume. The musical tone function to be controlled for each of the 20th roll bars can be selected so that each roll bar can provide separate musical tone control.

[Effects of the Invention] As explained above, in this invention, a roll bar for controlling musical tones of an electronic musical instrument is provided on the front side of the keyboard, and the control function of this roll bar is selectable, so that single notes, accompaniment notes, Adjustment of various musical tones such as volume control, transposition, and timbre of rhythm sounds can be easily performed by switching operations using selection buttons, etc., and various musical tones can be selectively adjusted using a single roll bar according to the amount of rotation of this roll bar. controlled by.

[Brief explanation of the drawing]

FIG. 1 is a top view of the electronic musical instrument according to the present invention, FIG. 2 is an explanatory diagram of the use of the electronic musical instrument according to the present invention, FIG. 3 is a sectional view of the electronic musical instrument according to the present invention, and FIG. FIG. 5 is a cross-sectional view of another example of the electronic musical instrument according to the present invention, FIG. 5 is an explanatory diagram of another example of the rotating body for musical tone control of the electronic musical instrument according to the present invention, and FIG. 6 is a sectional view of yet another example of the electronic musical instrument according to the present invention. 7 is a schematic block diagram of the basic hardware of the electronic musical instrument according to the present invention, FIG. 8 is a schematic block diagram of the hardware in which the roll bar of the electronic musical instrument according to the present invention is divided into two parts, and FIG. 9 is a top view. 10 is a flowchart of the basic operation of the electronic musical instrument according to the present invention, FIG. 10 is a flowchart of the basic operation of the musical tone control mechanism of the electronic musical instrument according to the present invention, and FIG.
FIG. 12 is a flow chart showing the operation of the two-part musical tone control roll bar according to the present invention, and FIG. 12 is a flow chart showing the operation of another embodiment of the two-part musical tone control roll bar according to the present invention. . Two function selection buttons: Instrument body, : Rotating plate, Two rotating shafts, 0: Operation button.

Claims (1)

[Claims] A musical tone control mechanism for an electronic musical instrument, comprising: a rotating body for musical tone adjustment operation having a rotating shaft along the keyboard arrangement direction; provided on the front side of the keyboard; and adjusting function selection means for the rotating body.