JPH0590589U - Performance parameter control device for electronic musical instruments - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a performance parameter control device for an electronic musical instrument, which can obtain a natural and smooth vibrato or tremolo effect by an easy operation at an arbitrary rotational position of a tone control wheel. [Structure] A wheel 2 for controlling a musical sound by a rotation operation is provided, and a rotation operation portion 7 of the wheel 2 is configured to be swingable in a direction substantially perpendicular to a rotation direction, and swing detection means 8 for detecting the swing amount is provided. Provided is a musical sound control means for controlling a musical sound based on the detection result of the swing detection means 8.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a performance parameter control device for an electronic musical instrument, and more particularly to a performance parameter control device for an electronic musical instrument that controls a musical sound (performance parameter) by a wheel.

[0002]

[Prior Art]

 In conventional electronic musical instruments, in order to obtain the effect of vibrato (a performance method that changes the pitch slightly and regularly) and the effect of a tremolo (a performance method that rocks the volume), (a) a low frequency oscillator There is a method of changing the pitch and volume, or (b) a method of assigning the control target of the tone control wheel as the pitch and volume and operating the wheel by finely rocking it back and forth in the direction of rotation.

[0003]

[Problems to be solved by the device]

 However, the method using the low-frequency oscillator of (a) was not able to perform with rich expressiveness because the vibrato and tremolo became uniform and monotonous. Further, in the method using the wheel of (b), since the wheel is originally intended to control the musical sound by changing it in a wide range, fine control is not intended, so it is not possible to rotate the wheel small and repeatedly before and after. The operability was poor and smooth vibrato and tremolo operation were not possible. In particular, when a click is provided at a rotation position of the wheel, it was difficult to finely rotate back and forth at this click position. Also, like the choking vibrato, which is one of the guitar playing methods, when the pitch bend was applied and then the vibrato was applied, the central pitch could not be kept constant, and it was not possible to perform naturally.

The present invention has been made in view of the above-mentioned drawbacks of the prior art, and an electronic musical instrument capable of obtaining a natural and smooth effect of vibrato and tremolo at an arbitrary rotational position of a tone control wheel by an easy operation. The purpose of the present invention is to provide a performance parameter control device.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, a performance parameter control device for an electronic musical instrument according to the present invention is provided with a wheel for controlling a musical sound by a rotary operation, and a rotary operation portion of the wheel is configured to be swingable in a direction substantially perpendicular to a rotational direction. However, a swing detecting means for detecting the swing amount is provided, and a musical sound control means for controlling a musical sound based on the detection result of the swing detecting means is provided.

[0006]

[Action]

 Rotate the operating part of the wheel with your hand (fingers), and swing this operating part with the same hand (fingers) at an arbitrary rotational position in a direction substantially perpendicular to the rotating direction. The amount of rocking is detected and the musical tone such as pitch or volume is controlled based on the detection result.

[0007]

【Example】

 FIG. 1 shows a tone control wheel according to an embodiment of the present invention, (A) is a longitudinal sectional view and (B) is a front view. A wheel body 2 is attached to a frame 1 attached to the instrument body side. The wheel body 2 is fixed to the shaft 3 and is rotatable with the shaft 3 with respect to the frame 1 as indicated by an arrow D. A rotary volume 4 for detecting the rotation amount of the shaft 3 is attached to the frame 1. A central return torsion coil spring 5 is fixed to the shaft 3. Both ends of the spring 5 are elastically engaged with both sides of the engaging piece 17 which is integral with the frame 1 with the engaging piece 17 interposed therebetween. Due to the action of the spring 5, the wheel body 2 is always subjected to an elastic force so as to return to the central position shown in FIG. The engagement piece 17 with which the spring 5 contacts is covered with a soundproof cover 6 made of rubber or synthetic resin.

An operator 7 is provided at the center of the outer periphery of the wheel body 2. A swing piece 10 is integrally formed on the lower portion of the operator 7. This swinging piece 10 has its root fixed to the wheel body 2, and the operator 7 can swing around this root in a direction perpendicular to the direction of rotation (the axial direction of the wheel) as indicated by arrow C. And Strain gauges 8 are attached to both side surfaces of the rocking piece 10. 9 is the lead wire.

Next, the operation and action of the tone control wheel having the above configuration will be described with reference to the control block diagram of FIG. The player rotates the wheel body 2 around the shaft 3 as indicated by an arrow D through the operator 7 with his / her finger. This rotation is detected by the resistance detection circuit 11 as a change in resistance of the rotary volume 4. This resistance detection signal is sent to the CPU 13 via the A / D converter. The CPU 13 controls a musical tone parameter set according to the resistance value, for example, a pitch.

When the wheel body 2 is rotated and vibrato is applied at a place where a desired pitch is reached, the performer holds the rotary position of the wheel with his / her finger and moves the manipulator 7 as shown by an arrow C. Swing finely in the direction perpendicular to the direction of rotation. The speed and magnitude of this swinging movement are detected by the strain detecting circuit 12 as a resistance change of the strain gauges 8 provided on both sides of the swinging piece 10. This resistance change is detected from the difference between both strain gauge outputs. Alternatively, both strain gauges may be incorporated into an appropriate bridge circuit to detect the strain amount. The output signal of the distortion detection circuit 12 is sent to the CPU 13 via the A / D converter.

The CPU 13 is further supplied with an output signal of a key-depression detection circuit 15 for detecting a key-depression operation of the keyboard 14 to create key-on and key-off data. The CPU 13 corrects the pitch designated by the key depression of the keyboard based on the rotation amount of the wheel and the distortion amount of the manipulator, and creates pitch data corresponding to the movement of the manipulator 7. This pitch data signal is sent to the sound source circuit 16, and an electronic sound corresponding to this is created and sounded by the sound system S S.

As in the above operation example, after the pitch is specified on the keyboard, the wheel is rotated to an arbitrary position, and then the operator 7 is finely rotated and rocked in a direction at a right angle to make the guitar viking vibrato. The same effect as can be obtained. If you want to change the pitch greatly after specifying the pitch by pressing the keys, you do not have to perform the swinging operation in the right-angled direction only by rotating the wheel. Alternatively, after the pitch is specified by pressing the key, the wheel may not be rotated and the operator 7 may be swung in the wheel axis direction while maintaining the pitch position.

In the above embodiment, the wheel is used as the pitch bend wheel for pitch control, but it may be used for volume control to obtain the tremolo effect. In addition to pitch and volume, it can be applied to various musical tone parameters for performance such as tone color, reverb and echo effects. Further, instead of the pitch bend wheel, it may be applied to a wheel having no central return vane, for example, a modulation wheel for modulation.

The shape and structure of the manipulator 7 are not limited to those in the illustrated embodiment, and may be any shape and structure capable of swinging in the wheel axis direction. Alternatively, the wheel itself may be made of a thin member so that it can swing in a direction perpendicular to the rotation direction, and the strain gauge may be directly attached to the wheel body itself.

Further, the swing detecting means of the operating element 7 is not limited to the strain gauge, but means capable of detecting swing rotation in the direction perpendicular to the wheel rotating direction as an analog amount, for example, rotation detecting means by a rotary volume, or operation. Appropriate detection means such as a structure in which pressure sensors are provided on both sides of the swing piece 10 of the child 7 or an optical sensor or a magnetic sensor can be used.

[0016]

[Effect of the device]

 As described above, in the performance parameter control device for an electronic musical instrument according to the present invention, the musical tone control wheel is configured to be swingable in the direction perpendicular to the rotation direction, the amount of swing is detected, and the detection result is detected. Since the musical sound is controlled based on, the performance of operability can be improved when a vibrato, tremolo, etc. performance effect is obtained, while the center position of the fluctuation is kept stable and can be played naturally. You can enjoy a wide range of musical expressions.

[Brief description of drawings]

1A and 1B are a longitudinal sectional view and a front view, respectively, of a musical tone control wheel of an electronic musical instrument according to the present invention.

FIG. 2 is a musical tone control block diagram of the electronic musical instrument according to the present invention.

[Explanation of symbols]

1 frame, 2 wheel bodies, 3 axes, 7 controls, 8 strain gauges

Claims (1)

[Scope of utility model registration request] 1. A wheel for controlling a musical sound by a rotary operation is provided, a rotary operation portion of the wheel is configured to be swingable in a direction substantially perpendicular to a rotation direction, and swing detection means for detecting the swing amount is provided. A performance parameter control device for an electronic musical instrument, comprising a musical sound control means for controlling a musical sound based on a detection result of the swing detection means.