WO2022075379A1 - Vibration exciting device and vibration exciting system - Google Patents

Abstract

This vibration exciting device comprises a vibration exciting device body that causes a stringed instrument to vibrate by imparting vibrations directly to strings provided to the stringed instrument.

Description

Vibration device and vibration system

The present invention relates to a vibrating device and a vibrating system.
This application claims priority on the basis of Japanese Patent Application No. 2020-169850 filed on October 7, 2020 and incorporates all of its disclosures herein.

Patent Document 1 discloses a vibrating device for a stringed instrument, which is supported by the strings of the stringed instrument and includes a vibrating device for producing a sound by directly vibrating the bridge.
Patent Document 2 discloses a vibrating device for a stringed instrument that is supported by the strings of the stringed instrument and directly vibrates the piece to produce a sound.

Japanese Patent No. 5849172 Japanese Patent No. 6503135 Gazette

The material of the pieces and bridges of stringed instruments is harder than the strings and body of stringed instruments. In addition, the pieces and bridges have a structure in which a part of them is fixed to the body and supports the strings. Therefore, even if the piece or bridge is directly vibrated by the vibrating device as in Patent Documents 1 and 2, the piece or bridge does not easily vibrate, and the stringed instrument has a magnitude of vibration (amplitude) of the vibrating device. The vibration (amplitude) of the body and strings becomes small. As a result, there is a problem that the volume produced by the stringed instrument is insufficient in response to the vibration caused by the vibration exciter.
Further, in the piece or the bridge, the vibration in the low frequency band due to the vibration exciter is likely to be attenuated. Therefore, there is a problem that the acoustic characteristics of the stringed instrument when the strings are vibrated by the vibrating device are significantly different from the acoustic characteristics of the stringed instrument when the performer plays the stringed instrument.

The present invention was made in view of the above circumstances. An example of an object of the present invention is to provide a vibrating device and a vibrating system capable of improving the volume and approaching the acoustic characteristics of a stringed instrument when a performer plays a stringed instrument. be.

The first aspect of the present invention is a vibrating device that vibrates the stringed instrument by directly applying vibration to the strings provided in the stringed instrument.

A second aspect of the present invention is a vibration device that vibrates in a predetermined vibration direction, and a vibrating device that extends from the vibrating device and comes into contact with a string provided on a stringed instrument to transmit the vibration of the vibrating device to the string. It is a vibration device including a vibration transmission unit.

A third aspect of the present invention is a vibration system including any of the above-mentioned vibration devices and a body vibration device that directly applies vibration to the body of the stringed instrument.

A fourth aspect of the present invention is a vibration device that vibrates in a predetermined vibration direction in response to a vibration signal, and the vibration of the vibration device that extends from the vibration device and comes into contact with a driven body. It is a vibration device including a vibration transmission unit that transmits to the driven body, and the vibration transmission unit includes a holding portion that sandwiches at least a part of the driven body.

According to the embodiment of the present invention, by directly vibrating the string of a stringed instrument as a driven body by a vibrating device, it is possible to improve the volume of sound produced by the stringed instrument, and the performer plays the stringed instrument. You can get closer to the acoustic characteristics of a stringed instrument.

It is a front view which shows the contrabass which applied the vibration system which concerns on embodiment of this invention. It is a side view which shows the contrabass which applied the vibration system which concerns on embodiment of this invention. It is the figure which looked at the exciter of FIG. 1 and 2 from the axial direction of a string. It is a rear view of the contrabass which shows the state which pressed the body vibration apparatus against the outer surface of the body by the pressing tool of 1st example. It is a side view of the contrabass which shows the state which pressed the body vibration apparatus against the outer surface of the body by the pressing tool of 1st example. It is a rear view of the contrabass which shows the state which pressed the body vibration apparatus against the outer surface of the body by the pressing tool of the 2nd example. It is a side view of the contrabass which shows the state which pressed the body vibration apparatus against the outer surface of the body by the pressing tool of the 2nd example. It is a rear view of the contrabass which shows the state which pressed the body vibration apparatus against the outer surface of the body by the pressing tool of the 3rd example. It is a side view of the contrabass which shows the state which pressed the body vibration apparatus against the outer surface of the body by the pressing tool of the 3rd example.

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 3.
As shown in FIGS. 1 and 2, the vibration device 2 and the vibration system 1 according to the embodiment of the present invention transfer the vibration of the strings 101, the body 102 having a cavity inside, and the strings 101 to the body 102. It is applied to a stringed instrument having a piece 103 (or a bridge) to transmit. Hereinafter, an example in which the vibrating device 2 and the vibrating system 1 are applied to the contrabass 100, which is a kind of stringed instrument, will be described. However, the vibrating device 2 and the vibrating system 1 may be applied to other stringed instruments such as a violin, a cello, an acoustic guitar, and an ukulele. A string 101 is stretched (provided) on the stringed instrument.

The vibration system 1 of the present embodiment includes a vibration device 2 and a body vibration device 3.
As shown in FIGS. 1 and 3, the vibration device 2 is a device that directly vibrates the string 101 of the contrabass 100, and includes a vibration device 21 and a vibration transmission unit 22. The vibration device main body may be configured by the vibration exciter 21 and the vibration transmission unit 22. The exciter 21 has a main body 23 and a vibrating body 24 that vibrates in a predetermined vibration direction (left-right direction in FIGS. 1 and 3) with respect to the main body 23. The exciter 21 is connected to an output device (not shown). Specifically, the input terminal of the exciter 21 may be connected to the output device by wire. Alternatively, a wireless unit such as WiFi (registered trademark) or Bluetooth (registered trademark) provided in the exciter 21 may be wirelessly connected to the output device so as to receive a signal from the output device. The output device stores music data and acoustic and / or audio data, and outputs a vibration signal (electric signal) based on the data. The output device outputs a vibration signal, and the vibration device 21 receives the vibration signal, so that the vibrating body 24 vibrates with respect to the main body 23 based on the vibration signal. The exciter 21 may be, for example, a voice coil type actuator. In this case, the main body 23 may have a magnetic body portion and the vibrating body 24 may have a voice coil. The vibration transmission unit 22 is provided so as to extend from the vibrating body 24. In FIG. 3, the vibration transmission unit 22 extends from the vibrating body 24 in the vibrating direction of the vibrating body 24. However, embodiments are not limited to such examples. The vibration transmission unit 22 may extend in a direction inclined with respect to the vibration direction, for example.
The weight of the main body 23 of the vibrating device 21 is sufficiently heavier than the weight of the sum of the weight of the vibrating body 24 and the weight of the vibration transmitting portion 22 provided on the vibrating body 24. As a result, the vibrating body 24 and the vibration transmitting unit 22 can be vibrated with respect to the main body 23.

The vibration transmission unit 22 transmits the vibration of the vibrating body 24 to the string 101 by coming into contact with the string 101 (driven body, driven object) of the contrabass 100. The vibration transmission unit 22 includes a holding unit 25 that sandwiches the string 101 of the contrabass 100.
The sandwiching portion 25 includes a first plate portion 26 and a second plate portion 27 arranged on both sides of the string 101, and a force applying portion 28 for applying a force in a direction in which the two plate portions 26, 27 are brought closer to each other. Have. The two plate portions 26 and 27 each have a flat strip shape. The two plate portions 26 and 27 are arranged in the plate thickness direction (vertical direction in FIG. 3). The two plate portions 26 and 27 are arranged so that their respective longitudinal directions (left-right direction in FIG. 3) are along the vibration direction of the vibrating body 24. In the present embodiment, the first plate portion 26 is fixed to the vibrating body 24. The second plate portion 27 is attached to the first plate portion 26. In FIG. 3, the length of the second plate portion 27 in the longitudinal direction is shorter than the length of the first plate portion 26. However, the embodiment is not limited to this example.

The force applying portion 28 in this embodiment is a screw 28A. The screw 28A is attached to the two plate portions 26, 27 to connect the two plate portions 26, 27. By rotating the screw 28A, the two plate portions 26 and 27 can be brought close to each other and separated from each other. With the string 101 placed between the two plates 26 and 27, the screw 28A is rotated to bring the two plates 26 and 27 closer to each other so that the string 101 is placed between the two plates 26 and 27. Can be pinched. In the present embodiment, the two strings 101 are sandwiched between the two plate portions 26 and 27 so that the two strings 101 support the vibration exciter 2. That is, in the state where the vibration device 2 is attached to the contrabass 100, the vibration device 2 does not touch the contrabass 100 other than the strings 101. Therefore, the vibration exciter 2 does not interfere with the vibration of the contrabass 100 or change the vibration characteristics of the contrabass 100.

In the present embodiment, the screw 28A is attached to the middle portion of the two plate portions 26 and 27 in the longitudinal direction. Thereby, the string 101 can be sandwiched between the two plate portions 26, 27 in the regions on both sides of the screw 28A in the longitudinal direction of the plate portions 26, 27. The screw 28A may be attached to the ends of the two plate portions 26 and 27 in the longitudinal direction.

In the vibration exciter 2 of the present embodiment configured as described above, the two plate portions 26 and 27 (vibration transmission portions 22) are attached to the contrabass 100 so as to come into contact with the strings 101. Specifically, by sandwiching the two strings 101 between the two plate portions 26 and 27 using the screw 28A (force applying portion 28), the vibration transmitting portion 22 is held in contact with the string 101. Will be done. In FIG. 1, the vibration exciter 2 is attached to two strings 101L (a part of the driven body) on the bass side of the four strings 101 of the contrabass 100, but the embodiment is such. Not limited to examples. The vibration exciter 2 may be attached to, for example, two strings 101H (a part of the driven body) on the treble side. Further, the vibration exciter 2 may be attached to all four strings 101 (the entire driven body), for example.

In the state where the vibration exciter 2 is attached to the string 101 of the contrabass 100, the longitudinal directions of the two plate portions 26 and 27 intersect with each other in the axial direction of the string 101 (vertical direction in FIG. 1). As a result, the vibration direction of the vibrating body 24 intersects the axial direction of the chord 101, so that the vibrating device 2 vibrates the chord 101 in the direction intersecting the axial direction of the chord 101. In FIG. 1, the longitudinal directions (horizontal direction in FIG. 1) of the two plate portions 26 and 27 are orthogonal to the axial direction of the string 101, but even if they are inclined with respect to the axial direction of the string 101, for example. good.

In a state where the vibration exciter 2 is attached to the contrabass 100, it is more preferable that the vibration transmission unit 22 comes into contact with a position that can be the antinode of the vibration of the string 101. The position of the string 101 that can be the antinode of vibration is not limited to the position of the string 101 in which the string 101 vibrates most, and may be a position of the strings 101 that does not become a vibration node. The position of the vibration node of the string 101 is, for example, the position where the string 101 is supported by the nut 141 of the bridge 103 or the fingerboard 104. Therefore, the position where the string 101 is displaced in the axial direction of the string 101 from the position supported by the piece 103 or the nut 141 is a position that can be the vibration of the string 101. From this, the position of the string 101, which can be the antinode of the vibration of the string 101, may be a position adjacent to the piece 103 of the contrabass 100 as illustrated in FIG. Further, the position of the string 101 that can be the antinode of the vibration of the string 101 may be, for example, a position adjacent to the nut 141.

In FIG. 1, the vibration transmission unit 22 of the vibration device 2 comes into contact with a portion of the string 101 between the piece 103 and the fingerboard 104 (mainly a portion rubbed with a bow or flipped with a finger). However, the embodiment is not limited to such an example. The vibration transmission unit 22 may come into contact with the portion of the string 101 between the piece 103 and the tailpiece 105, or at the portion of the string 101 between the nut 141 and the peg 161 provided on the head 106. You may make contact.

The vibrating device 2 attached to the contrabass 100 as described above directly vibrates the string 101 of the contrabass 100. The vibration of the string 101 vibrated by the vibration device 2 is transmitted to the body 102 via the piece 103, so that the body 102 vibrates. Further, the vibration of the string 101 is transmitted to other parts of the contrabass 100 such as the neck 107 and the head 106, so that the other parts of the contrabass 100 vibrate. That is, the vibration device 2 vibrates the entire contrabass 100 via the vibration of the strings 101. As a result, the contrabass 100 is pronounced.

As shown in FIGS. 1 and 2, the body vibration device 3 directly vibrates the body 102 of the contrabass 100. The body vibration device 3 includes a main body and a vibrating body similar to the vibration device 21 of the vibration device 2 described above. In the body vibration device 3, the vibrating body vibrates with respect to the main body by receiving a vibration signal (electric signal) from an output device (not shown).

The body vibration device 3 is attached to the body 102 of the contrabass 100 so that the vibrating body comes into contact with the outer surface of the body 102. It is more preferable that the body vibration device 3 is attached to a portion (a portion easily vibrating) of the contrabass 100 in which the body portion 102 vibrates efficiently with respect to the vibration by the body portion vibration device 3. In FIG. 2, the body vibration device 3 is attached to the back plate 121 of the body 102, but may be attached to the front plate 122 of the body 102, for example. Further, in FIG. 1, the body vibration device 3 is attached at a position offset to the left from the center of the contrabass 100 in the width direction (left-right direction in FIG. 1), but the embodiment is not limited to this. The body vibration device 3 may be attached to the center of the contrabass 100 in the width direction, for example (see, for example, FIGS. 4, 6 and 8).

As shown in FIGS. 1 and 2, the body vibration device 3 may be attached to the outer surface of the body 102 by using a double-sided tape (not shown) that can be peeled off from the body 102, for example. Further, the body vibration device 3 may be pressed against the outer surface of the body 102 by the pressing tool 4, for example, as shown in FIGS. 4 to 9. The three pressing tools 4 (4C, 4D, 4E) exemplified in FIGS. 4 to 9 all support the body vibration device 3 and sandwich the support portion 41 between the support portion 41 and the outer surface of the body portion 102, and the support portion. It has a mounting portion 42 for mounting the 41 to the body portion 102.

In the first example presser 4C illustrated in FIGS. 4 and 5, the support portion 41 has a strip shape extending along the outer surface of the body portion 102. The body vibration device 3 is supported by the first end portion in the longitudinal direction of the support portion 41. The mounting portion 42 has a strip shape extending from the second end portion in the longitudinal direction of the support portion 41 toward the end pin 108, and is fixed to the body portion 102 by using the end pin 108. For example, when the end pin 108 is screwed to the body 102, the mounting portion 42 is fixed to the body 102 by being fastened to the body 102 by the end pin 108. By fixing the mounting portion 42 to the body portion 102, the support portion 41 is attached to the body portion 102.

In the second example of the pressing tool 4D illustrated in FIGS. 6 and 7, the support portion 41 has a band shape extending along the outer surface of the body portion 102. The support portion 41 has a support portion 43 that supports the body vibration device 3 in the middle portion in the longitudinal direction thereof. The pair of mounting portions 42 are provided at both ends of the support portion 41, and project from both ends of the support portion 41 in the longitudinal direction toward the body portion 102. By sandwiching the body portion 102 between the pair of mounting portions 42, the support portion 41 is attached to the body portion 102. The support portion 41 may be elastically expanded and contracted in the longitudinal direction of the support portion 41 or elastically flexed and deformed so that the distance between the pair of mounting portions 42 changes, for example. In this case, the body portion 102 can be sandwiched between the pair of mounting portions 42 by utilizing the elastic force of the support portion 41.

As illustrated in FIGS. 6 and 7, the body vibration device 3 may be pressed against the outer surface of the body 102 with one pressing tool 4D. Alternatively, the body vibration device 3 may be pressed against the outer surface of the body 102 with a plurality of pressing tools 4D. When a plurality of pressing tools 4D are used, for example, a plurality of such that the supporting portions 43 of the plurality of pressing tools 4D overlap each other and the longitudinal directions of the supporting portions 41 of the plurality of pressing tools 4D intersect each other. Presser 4D may be attached to the body 102.

In the pressing tool 4E of the third example illustrated in FIGS. 8 and 9, the support portion 41 extends radially from the support portion 43 supporting the body portion vibration device 3 along the outer surface of the body portion 102 in different directions. It has legs 44. The mounting portion 42 projects from the tip of each leg portion 44 in the extension direction toward the body portion 102. By sandwiching the body portion 102 between these four mounting portions 42, the support portion 41 is attached to the body portion 102. The support portion 41 may be elastically expanded and contracted in the longitudinal direction of the leg portions 44, or may be elastically flexed and deformed so that the distance between the four mounting portions 42 changes, for example. In this case, the body portion 102 can be sandwiched between the plurality of mounting portions 42 by utilizing the elastic force of the support portion 41. The number of legs 44 constituting the support portion 41 and the number of mounting portions 42 corresponding thereto may be at least three or more.

When the body vibration device 3 is pressed against the body 102 by using any of the pressing tools 4 (4C, 4D, 4E) of the first to third examples described above, between the body 102 and the mounting portion 42. A cushioning material such as felt may be sandwiched between the two. In this case, it is possible to prevent or prevent the body portion 102 from being damaged by the mounting portion 42.

When the body vibration device 3 attached to the body 102 directly vibrates the body 102 as described above, the body 102 vibrates. Further, the vibration of the body portion 102 is transmitted to other parts of the contrabass 100 such as the strings 101, the neck 107, and the head 106, so that the other parts of the contrabass 100 vibrate. That is, the body vibration device 3 vibrates the contrabass 100 in the same manner as the vibration device 2. As a result, the contrabass 100 is pronounced.

In the vibration system 1 of the present embodiment, the vibration device 2 and the body vibration device 3 receive a vibration signal corresponding to a predetermined performance sound (music data, sound, and / or voice data, etc.). , The string 101 and the body 102 of the contrabass 100 are vibrated. As a result, the contrabass 100 emits a performance sound corresponding to the vibration signal.

The frequency characteristic of the vibration by the body vibration device 3 may be the same as the frequency characteristic of the vibration by the vibration device 2, but may be different from the frequency characteristic of the vibration by the vibration device 2. For example, in the contrabass 100, if the string 101 is directly vibrated by the vibrating device 2, low-pitched sound is relatively easy to be produced. Further, when the body portion 102 is directly vibrated by the body portion vibration device 3, it is relatively easy to produce sounds in the midrange and high range. In consideration of this, the frequency characteristic of the vibration by the vibration device 2 is set to the frequency characteristic in which the bass range is relatively large, and the frequency characteristic of the vibration by the body vibration device 3 is set to the frequency in which the midrange and the high range are large. It may be a characteristic. That is, the amplitude of the vibration generated by the vibration exciter 2 and the amplitude of the vibration generated by the body vibration device 32 may differ depending on the range of the sound emitted from the contrabass 100. For example, when the sound emitted from the contrabass 100 is low-pitched sound, the amplitude of the vibration generated by the vibration exciter 2 may be larger than the amplitude of the vibration generated by the body vibration device 32. On the contrary, when the sound emitted from the contrabass 100 is a middle sound or a high sound, the amplitude of the vibration generated by the body vibration device 32 may be larger than the amplitude of the vibration generated by the vibration device 2. ..

As described above, the vibrating device 2 of the present embodiment directly vibrates the string 101, which is more easily deformed elastically than the piece 103, and transmits a stringed instrument such as a contrabass 100 through the vibration of the string 101. Shake. Therefore, it is possible to suppress the vibration from being attenuated in the process of transmitting the vibration of the vibration exciter 2 to the string 101. As a result, the string 101 can be vibrated efficiently. Therefore, it is possible to improve the volume produced by the stringed instrument in response to the vibration caused by the vibration exciter 2. Further, the acoustic characteristics of the stringed instrument when the string 101 is vibrated by the vibrating device 2 can be brought close to the acoustic characteristics of the stringed instrument when the performer plays the stringed instrument.

Further, since the vibrating device 2 of the present embodiment directly vibrates the string 101, the vibrating device 2 can be applied not only to the contrabass 100 but also to various stringed instruments. This point will be described below.
In the method in which the vibrating device 2 directly vibrates the piece 103 (or the bridge), the durability of the piece 103 against the vibration by the vibrating device 2 is required. Therefore, the method of directly vibrating the piece 103 can be applied only to a stringed instrument in which the piece 103 is large to some extent and durable. On the other hand, in the method in which the vibrating device 2 directly vibrates the string 101 as in the present embodiment, the piece 103 is not directly vibrated, so that the durability of the piece 103 is not required. Therefore, the method of directly vibrating the string 101 can be applied to various stringed instruments regardless of the size and toughness of the piece 103. This method can be applied to, for example, a stringed instrument such as a violin in which the size of the piece 103 is small and thin.

Further, the vibrating device 2 of the present embodiment is provided with a vibrating body 24 having a vibrating body 24 that vibrates with respect to the main body 23 and the main body 23, and a vibrating body 24 that extends from the vibrating body 24 and comes into contact with the string 101. A vibration transmission unit 22 for transmitting the vibration of 24 to the string 101 is provided. As a result, the vibration of the vibrating body 24 in response to the vibrating signal input to the vibrating device 21 can be transmitted to the string 101 via the vibration transmitting unit 22.

Further, according to the vibration device 2 of the present embodiment, the vibration transmission unit 22 comes into contact with the position of the string 101 that can be the antinode of the vibration of the string 101. As a result, the string 101 can be vibrated with high efficiency in response to the vibration of the string 101 by the vibration device 2.

Further, the vibration device 2 of the present embodiment vibrates the string 101 in a direction intersecting the axial direction of the string 101. As a result, the string 101 can be vibrated in a direction intersecting the axial direction thereof. Such a vibration mode of the string 101 is close to the vibration mode of the string 101 when the performer plays a stringed instrument such as a contrabass 100. Therefore, the acoustic characteristics of the stringed instrument when the string 101 is vibrated by the vibrating device 2 can be made closer to the acoustic characteristics of the stringed instrument when the performer plays the stringed instrument.

Further, according to the vibration transmitting device 2 of the present embodiment, the vibration transmitting unit 22 includes a holding unit 25 that sandwiches the string 101 (driven body). As a result, the exciter 2 (particularly the exciter 21) can be supported by the string 101. When the vibration device 2 is supported by the string 101, the vibration of the body 102 is not hindered as compared with the case where the vibration device 2 is supported by the body 102. Therefore, the acoustic characteristics of a stringed instrument such as the contrabass 100, which is produced by the vibration of the string 101 by the vibration apparatus 2, can be made closer to the acoustic characteristics of the stringed instrument when the performer plays the stringed instrument.
Further, according to the vibration device 2 of the present embodiment, since the sandwiching portion 25 sandwiches the plurality of strings 101, the vibration device 2 is sandwiched by the vibration device 2 as compared with the case where the sandwiching portion 25 sandwiches only one string 101. It can be stably supported by 101.

Further, according to the vibration device 2 of the present embodiment, the sandwiching portion 25 has two plate portions 26, 27 arranged on both sides of the string 101 (driven body) and two plate portions 26, 27, respectively. It is provided with a force applying unit 28 that applies a force in a direction of approaching. As a result, the vibration exciter 2 can be reliably supported by the string 101.

Further, in the vibration device 2 of the present embodiment, the screw 28A, which is the force applying portion 28, is attached to the middle portion of the two plate portions 26, 27 in the longitudinal direction. As a result, the strings 101 can be pinched with even force in the regions on both sides of the screw 28A (force applying portion 28) in the longitudinal direction of the plate portions 26 and 27.

Further, in the vibrating device 2 of the present embodiment, the vibration transmission unit 22 is set to a portion of the string 101 between the piece 103 and the fingerboard 104 (mainly a portion where the string is stringed with a bow or played with a finger). It can be brought into contact with other parts except. Therefore, a player of a stringed instrument such as a contrabass 100 can play the stringed instrument without being hindered by the vibrating device 2 attached to the stringed instrument. That is, the performer can play the stringed instrument while producing the performance sound in the stringed instrument by using the vibrating device 2. In addition, the performer can play the model and the performer himself by listening to the model performance sound produced by the stringed instrument using the vibration exciter 2 and experiencing the vibration of the stringed instrument accompanying the model performance sound. You can easily compare your performance with both sound and vibration. As a result, the performer can efficiently understand and learn how to play a stringed instrument.

The vibration system 1 of the present embodiment includes a vibration device 2 that directly vibrates the strings 101 and a body vibration device 3 that directly vibrates the body 102. Therefore, the frequency characteristic of vibrating the string 101 by the vibration exciter 2 and the frequency characteristic of vibrating the body 102 by the body vibration device 3 can be adjusted separately. This makes it possible to easily adjust the acoustic characteristics of a stringed instrument such as a contrabass 100, as compared with the case where only the string 101 is vibrated or only the body 102 is vibrated.

Further, in the vibration system 1 of the present embodiment, when the frequency characteristics of the vibration of the string 101 and the frequency characteristics of the vibration of the body 102 are different, the frequency characteristics of the vibration by the vibration device 2 and the body By making the frequency characteristics of the vibration by the vibration device 3 different from each other, it is possible to easily adjust the acoustic characteristics of a string instrument such as the contrabus 100 by the vibration system 1.

Although the present invention has been described in detail above, the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

In the vibration device according to the embodiment of the present invention, the force applying portion 28 of the holding portion 25 may be an elastic body such as a spring. That is, the two plate portions 26, 27 may be brought close to each other by the elastic force of the elastic body.

For example, a plurality of vibration exciters may be attached to a stringed instrument. For example, one vibrating device 2 is attached to a part of a plurality of strings 101 (for example, two strings 101L on the bass side), and another vibrating device 2 is attached to the rest of the plurality of strings 101 (for example, two strings on the treble side). It may be attached to the string 101H). In this case, the frequency characteristics of the vibration signal received by the vibration device 2 may be common among the plurality of vibration devices 2, but may be different. The frequency characteristics of the vibration signal may differ between the vibration device 2 attached to the high-pitched string 101H and the vibration device 2 attached to the low-pitched string 101L, for example.

The exciter according to the embodiment of the present invention may be attached to a plurality of strings 101 of a stringed instrument one by one, for example. In this case, each vibrating device 2 can vibrate each string 101 at a frequency corresponding to the frequency band of each string 101. For example, the vibrating device 2 attached to the low-pitched string 101L can vibrate the low-pitched string 101L at a low frequency corresponding to the low frequency band of the low-pitched string 101L. This makes it possible to get closer to the acoustic characteristics of the stringed instrument when the performer plays the stringed instrument.

In the vibration device according to the embodiment of the present invention, the holding portion 25 of the vibration transmission unit 22 is not limited to sandwiching the string 101 of the stringed instrument, but may sandwich any driven body (vibration target). That is, the vibration exciter according to the embodiment of the present invention is not limited to being applied to a stringed instrument.

The example in which the vibration system 1 includes the vibration device 2 and the body vibration device 3 has been described, but the configuration of the vibration system 1 is not limited to such an example. For example, the vibration system 1 may include only the vibration device 2. That is, the vibration system 1 may include only one of the vibration device 2 and the body vibration device 3.

The present invention may be applied to a vibrating device and a vibrating system.

1 ... Vibration system 2 ... Vibration device 3 ... Body vibration device 21 ... Vibration transmitter 22 ... Vibration transmission unit 23 ... Main body 24 ... Vibration body 25 ... Holding part 26 ... First plate part 27 ... Second plate part 28 ... Power application unit 100 ... Contrabass (stringed instrument)
101 ... String (driven body)
102 ... Body 103 ... Piece

Claims (8)

1. A vibration device including a vibration device main body that vibrates the string instrument by directly applying vibration to the strings provided in the string instrument.
2. A vibration exciter that vibrates in a predetermined vibration direction,
   A vibration transmission unit that extends from the vibrating device, contacts a string provided on a stringed instrument, and transmits the vibration of the vibrating device to the string.
   A vibration device equipped with.
3. The vibrating device according to claim 2, wherein the vibration transmitting unit contacts a portion of the string that is the antinode of the vibration of the string.
4. The vibrating device according to any one of claims 1 to 3, wherein the strings vibrate in a direction intersecting the axial direction of the strings.
5. The vibrating device according to any one of claims 1 to 4,
   A body vibration device that directly applies vibration to the body of the stringed instrument,
   Vibration system equipped with.
6. The vibration system according to claim 5, wherein the amplitude of the vibration applied to the strings by the vibration device and the amplitude of the vibration applied to the body by the body vibration device are different from each other.
7. A vibrating device that vibrates in a predetermined vibration direction in response to a vibrating signal,
   A vibration transmission unit extending from the vibrating device, contacting the driven body, and transmitting the vibration of the vibrating device to the driven body is provided.
   A vibration device in which the vibration transmitting portion includes a holding portion that sandwiches at least a part of the driven body.
8. The sandwiching portion includes two plate portions arranged on both sides of the driven body and a plate portion.
   The vibrating device according to claim 7, further comprising a force applying portion for applying a force in a direction in which the two plate portions are brought closer to each other.

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