Vibrating device and vibration system

Abstract

To improve sound volume with which a stringed instrument is excited by an excitation device to sound and also to achieve approximation to acoustic characteristics of the stringed instrument when a player plays on the stringed instrument.SOLUTION: There is provided an excitation device 2 which excites a string 101 directly to excite the stringed instrument through vibration of the string 101. Further, there is provided an excitation device 2 comprising: an exciter 21 which has a main body 23 and a vibration body 24 vibrating in a predetermined vibrating direction relative to the main body 23; and a vibration transmission part 22 provided extending from the vibration body 24 and coming into contact with a string 101 of the stringed instrument to transmit vibrations of the vibration body 24 to the string 101.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] The present invention relates to a vibration device and a vibration system.

Background Art

[0002] Patent Document 1 discloses a vibration device for a stringed instrument (equipped with a vibrator) that is supported by the strings of a stringed instrument and causes sound to be produced by directly vibrating the bridge. Patent Document 2 discloses a vibration device for a stringed instrument that is supported by the strings of a stringed instrument and causes sound to be produced by directly vibrating the nut.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, the nut and bridge of a stringed instrument are made of a material that is harder than the strings and the body of the stringed instrument. Also, the nut and bridge have a structure in which a part of them is fixed to the body and supports the strings. For this reason, even if the nut or bridge is directly vibrated by a vibration device as in Patent Documents 1 and 2, the nut and bridge are difficult to vibrate, and the vibration (amplitude) of the body and strings of the stringed instrument becomes smaller than the vibration (amplitude) of the vibration device. As a result, there is a problem that the volume of sound produced by the stringed instrument in response to the vibration by the vibration device is insufficient. Also, in the nut and bridge, vibrations in a low frequency band caused by a vibration device are particularly likely to be attenuated. For this reason, there is a problem that the acoustic characteristics of the stringed instrument when the strings are vibrated by the vibration device are greatly different from the acoustic characteristics of the stringed instrument when a player plays the stringed instrument.

[0005] The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a vibration device and a vibration system capable of improving the volume and approaching the acoustic characteristics of a stringed instrument when a player plays the stringed instrument.

Means for Solving the Problems

[0006] A first aspect of the present invention is a vibration device that directly vibrates the strings of a stringed instrument and vibrates the stringed instrument through the vibration of the strings. and a body vibration device that directly vibrates the body of the stringed instrument, wherein the frequency characteristics of the vibration by the vibration device and the frequency characteristics of the vibration by the body vibration device are different vibration systems from each other It is.

[0007] A second aspect of the present invention is a vibration device including a main body and a vibrator that vibrates in a predetermined vibration direction with respect to the main body, and a vibration transmission unit that is provided so as to extend from the vibrator and contacts the strings of the stringed instrument to transmit the vibration of the vibrator to the strings. and a body vibration device that directly vibrates the body of the stringed instrument, wherein the frequency characteristics of the vibration by the vibration device and the frequency characteristics of the vibration by the body vibration device are different vibration systems from each other It is.

[0009] A third aspect of the present invention is a vibration device including a main body and a vibrator that vibrates in a predetermined vibration direction with respect to the main body in response to a vibration signal, and a vibration transmission unit that is provided so as to extend from the vibrator and contacts the strings of the stringed instrument to transmit the vibration of the vibrator to the strings, wherein the vibration transmission unit includes a clamping unit that clamps the strings, and by clamping the strings with the clamping unit, the vibration transmission unit is held in a state of contacting the strings. The clamping portion includes two plate portions disposed on both sides of the string, and a force applying portion that applies a force in a direction to bring the two plate portions closer to each other It is a vibration device.

Effects of the Invention

[0010] According to the present invention, by directly vibrating the strings of a stringed instrument as a driven body with a vibration device, it is possible to improve the volume generated by the stringed instrument and to approach the acoustic characteristics of the stringed instrument when a player plays the stringed instrument.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Figure 3

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Mode for Carrying Out the Invention

[0012] Hereinafter, an embodiment 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 present embodiment are applied to a stringed instrument having a string 101, a body 102 having a cavity inside, and a piece 103 (or bridge) that transmits the vibration of the string 101 to the body 102. Hereinafter, an example in which the vibration device 2 and the vibration system 1 are applied to a contrabass 100, which is a kind of stringed instrument, will be described. However, the vibration device 2 and the vibration system 1 may be applied to other stringed instruments such as a violin, a cello, an acoustic guitar, and a ukulele.

[0013] 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 double bass 100, and includes a vibrator 21 and a vibration transmission unit 22. The vibrator 21 has a main body 23 and a vibrating body 24 that vibrates in a predetermined vibration direction (the left-right direction in FIGS. 1 and 3) with respect to the main body 23. The vibrator 21 is connected to an output device (not shown). Specifically, the input terminal of the vibrator 21 may be wired-connected to the output device, or the vibrator 21 may be wirelessly connected to the output device so that a wireless unit such as WiFi (registered trademark) or Bluetooth (registered trademark) provided in the vibrator 21 receives a signal from the output device. The output device stores music data and acoustic / audio data, and outputs a vibration signal (electrical signal) based on those data. When the output device outputs a vibration signal and the vibrator 21 receives the vibration signal, the vibrating body 24 vibrates with respect to the main body 23 based on the vibration signal. The vibrator 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 vibration direction of the vibrating body 24, but may extend, for example, in a direction inclined with respect to the vibration direction. The weight of the main body 23 of the vibrator 21 is sufficiently heavier than the combined weight of the vibrating body 24 and the vibration transmission unit 22 provided thereon. Thereby, the vibrating body 24 and the vibration transmission unit 22 can be vibrated with respect to the main body 23.

[0014] The vibration transmission unit 22 transmits the vibration of the vibrating body 24 to the string 101 by contacting the string 101 (driven body) of the double bass 100. The vibration transmission unit 22 includes a clamping portion 25 that clamps the string 101 of the double bass 100. The clamping portion 25 includes two plate portions 26 and 27 disposed on both sides of the string 101, and a force applying portion 28 that applies a force in a direction to bring the two plate portions 26 and 27 closer to each other. The two plate portions 26 and 27 are each formed in a flat strip shape and are arranged in the plate thickness direction (the vertical direction in FIG. 3). The longitudinal directions of the two plate portions 26 and 27 are arranged along the vibration direction of the vibrating body 24. In the present embodiment, the first plate portion 26 of the two plate portions 26 and 27 is fixed to the vibrating body 24. The second plate portion 27 of the two plate portions 26 and 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, but it is not limited to this.

[0015] The force applying portion 28 in the present embodiment is a screw 28A. The screw 28A is attached to the two plate portions 26 and 27 to connect the two plate portions 26 and 27. By rotating the screw 28A, the two plate portions 26 and 27 can be brought closer to or separated from each other. With the string 101 disposed between the two plate portions 26 and 27, by rotating the screw 28A to bring the two plate portions 26 and 27 closer to each other, the string 101 can be clamped between the two plate portions 26 and 27. In the present embodiment, by clamping two strings 101 between the two plate portions 26 and 27, a structure is formed in which the two strings 101 support the vibration device 2. That is, in a state where the vibration device 2 is attached to the contrabass 100, since the vibration device 2 does not touch the contrabass 100 other than the string 101, the vibration device 2 does not interfere with the vibration of the contrabass 100 or change the vibration characteristics of the contrabass 100.

[0016] In the present embodiment, the screw 28A is attached to the middle portions of the two plate portions 26 and 27 in the longitudinal direction. Thereby, the string 101 can be clamped between the two plate portions 26 and 27 in regions on both sides of the screw 28A in the longitudinal direction of the plate portions 26 and 27. Note that the screw 28A may be attached to the ends of the two plate portions 26 and 27 in the longitudinal direction.

[0017] The vibration device 2 of the present embodiment configured as described above is attached to the contrabass 100 such that the two plate portions 26, 27 (vibration transmission portion 22) contact the string 101. Specifically, by sandwiching the two strings 101 between the two plate portions 26, 27 using the screws 28A (force application portion 28), the vibration transmission portion 22 is held in a state of contacting the string 101. In FIG. 1, the vibration device 2 is attached to the two lower strings 101L (a part of the driven body) among the four strings 101 of the contrabass 100, but may be attached to the two upper strings 101H (a part of the driven body), for example. Further, the vibration device 2 may be attached to all four strings 101 (the entire driven body), for example.

[0018] In a state where the vibration device 2 is attached to the string 101 of the contrabass 100, the longitudinal directions of the two plate portions 26, 27 intersect with the axial direction of the string 101 (the vertical direction in FIG. 1). Thereby, since the vibration direction of the vibrating body 24 intersects with the axial direction of the string 101, the vibration device 2 vibrates the string 101 in a direction intersecting with the axial direction of the string 101. In FIG. 1, the longitudinal directions of the two plate portions 26, 27 (the left - right direction in FIG. 1) are orthogonal to the axial direction of the string 101, but may be inclined with respect to the axial direction of the string 101, for example.

[0019] In a state where the vibration device 2 is attached to the contrabass 100, it is more preferable that the vibration transmission portion 22 contacts a position on the string 101 that can be an antinode of the vibration of the string 101. The position of the string 101 that can be an antinode of the vibration is not limited to the position where the string 101 vibrates most greatly, and may be any position on the string 101 that does not become a node of the vibration. The position where the string 101 becomes a node of the vibration is, for example, the position where the string 101 is supported by the bridge 103 or the nut 141 of the fingerboard 104. Therefore, a position shifted in the axial direction of the string 101 from the position where the string 101 is supported by the bridge 103 or the nut 141 becomes a position where the string 101 can be an antinode of the vibration. From this, the position of the string 101 that can be an antinode of the vibration may be a position adjacent to the bridge 103 of the contrabass 100 as illustrated in FIG. 1. Further, the position of the string 101 that can be an antinode of the vibration may be a position adjacent to the nut 141, for example.

[0020] In FIG. 1, the vibration transmission part 22 of the vibration device 2 is in contact with a part between the bridge 103 and the fingerboard 104 of the string 101 (mainly the part where the string is rubbed with a bow or plucked with fingers), but it is not limited to this. The vibration transmission part 22 may be in contact with a part between the bridge 103 and the tailpiece 105 of the string 101, or may be in contact with a part between the nut 141 and the peg 161 provided on the head 106 of the string 101.

[0021] As described above, the vibration device 2 attached to the double bass 100 directly vibrates the string 101 of the double bass 100. When the vibration of the string 101 vibrated by the vibration device 2 is transmitted to the body part 102 via the bridge 103, the body part 102 vibrates. Also, when the vibration of the string 101 is transmitted to other parts of the double bass 100 such as the neck 107 and the head 106, other parts of the double bass 100 vibrate. That is, the vibration device 2 vibrates the entire double bass 100 via the vibration of the string 101. Thereby, the double bass 100 produces a sound.

[0022] As shown in FIGS. 1 and 2, the body vibration device 3 directly vibrates the body part 102 of the double bass 100. Although not shown, the body vibration device 3 includes a main body and a vibrating body similar to the vibrator 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 (electrical signal) from an output device (not shown).

[0023] The body vibration device 3 is attached to the body portion 102 of the contrabass 100 such that its vibrating body contacts the outer surface of the body portion 102. The body vibration device 3 is more preferably attached to a portion of the contrabass 100 (a portion that is likely to vibrate) where the body portion 102 vibrates efficiently with respect to the vibration by the body vibration device 3. In FIG. 2, the body vibration device 3 is attached to the back plate 121 of the body portion 102, but may be attached to, for example, the front plate 122 of the body portion 102. Also, 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 (the left - right direction in FIG. 1), but it is not limited to this. The body vibration device 3 may be attached, for example, at the center of the contrabass 100 in the width direction (see, for example, FIGS. 4, 6, 8).

[0024] The body vibration device 3 may be attached to the outer surface of the body portion 102 using, for example, a double - sided tape (not shown) that is separable from the body portion 102 as shown in FIGS. 1 and 2. Also, the body vibration device 3 may be pressed against the outer surface of the body portion 102 by a pressing tool 4 as shown in FIGS. 4 to 9, for example. Each of the three pressing tools 4 (4C, 4D, 4E) illustrated in FIGS. 4 to 9 has a support portion 41 that supports the body vibration device 3 and sandwiches it between the support portion 41 and the outer surface of the body portion 102, and an attachment portion 42 for attaching the support portion 41 to the body portion 102.

[0025] In the first - example pressing tool 4C illustrated in FIGS. 4 and 5, the support portion 41 is formed in a strip - plate shape extending along the outer surface of the body portion 102. The body vibration device 3 is supported at the first end portion in the longitudinal direction of the support portion 41. The attachment portion 42 is formed in a strip - plate 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 using the end pin 108. For example, when the end pin 108 is screwed to the body portion 102, the attachment portion 42 is fixed to the body portion 102 by being clamped together with the body portion 102 by the end pin 108. By fixing the attachment portion 42 to the body portion 102, the support portion 41 is attached to the body portion 102.

[0026] In the second example of the pressing tool 4D illustrated in FIGS. 6 and 7, the support portion 41 is formed in a strip shape extending along the outer surface of the body portion 102. The support portion 41 has a support site 43 that supports the body vibration device 3 at a midportion in its longitudinal direction. The attachment portion 42 projects from both longitudinal ends of the support portion 41 toward the body portion 102 side. By sandwiching the body portion 102 between a pair of attachment portions 42 provided at both ends of the support portion 41, the support portion 41 is attached to the body portion 102. The support portion 41 may be elastically expanded and contracted or elastically bent and deformed in the longitudinal direction of the support portion 41, for example, so that the distance between a pair of attachment portions 42 changes. In this case, the body portion 102 can be sandwiched between a pair of attachment portions 42 by utilizing the elastic force of the support portion 41.

[0027] As illustrated in FIGS. 6 and 7, the second example of the pressing tool 4D may press one body vibration device 3 against the outer surface of the body portion 102, or may press a plurality of body vibration devices 3 against the outer surface of the body portion 102, for example. When a plurality of the second example of the pressing tools 4D are used, for example, the plurality of pressing tools 4D may be attached to the body portion 102 such that the support sites 43 of the plurality of pressing tools 4D overlap each other and the longitudinal directions of the support portions 41 of the plurality of pressing tools 4D intersect each other.

[0028] In the third example of the pressing tool 4E illustrated in FIGS. 8 and 9, the support portion 41 has four leg portions 44 that radially extend from the support site 43 that supports the body vibration device 3 along the outer surface of the body portion 102 in different directions from each other. The attachment portion 42 projects from the tip of each leg portion 44 in the extending direction toward the body portion 102 side. By sandwiching the body portion 102 between these four attachment portions 42, the support portion 41 is attached to the body portion 102. The support portion 41 may be elastically expanded and contracted or elastically bent and deformed in the longitudinal direction of the leg portion 44, for example, so that the distance between the four attachment portions 42 changes. In this case, the body portion 102 can be sandwiched between the plurality of attachment portions 42 by utilizing the elastic force of the support portion 41. Note that the number of leg portions 44 constituting the support portion 41 and the number of corresponding attachment portions 42 may be at least three or more.

[0029] When pressing the body vibration device 3 against the body portion 102 using any of the pressing tools 4 (4C, 4D, 4E) in the first to third examples described above, a cushioning material such as felt may be sandwiched between the body portion 102 and the mounting portion 42. In this case, it is possible to suppress or prevent the body portion 102 from being damaged by the mounting portion 42.

[0030] When the body vibration device 3 attached to the body portion 102 directly vibrates the body portion 102 as described above, the body portion 102 vibrates. Further, the vibration of the body portion 102 is transmitted to other parts of the double bass 100 such as the string 101, the neck 107, and the head 106, causing other parts of the double bass 100 to vibrate. That is, the body vibration device 3 vibrates the double bass 100 in the same manner as the vibration device 2. Thereby, the double bass 100 produces a sound.

[0031] 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 (such as music data or acoustic / audio data), thereby vibrating the string 101 and the body portion 102 of the double bass 100. Thereby, the double bass 100 produces a performance sound corresponding to the vibration signal.

[0032] The frequency characteristics of the vibration by the body vibration device 3 may be the same as the frequency characteristics of the vibration by the vibration device 2, or may be different from the frequency characteristics of the vibration by the vibration device 2. For example, in the double bass 100, when the string 101 is directly vibrated by the vibration device 2, sounds in the low frequency range are relatively easy to produce. Also, when the body portion 102 is directly vibrated by the body vibration device 3, sounds in the middle and high frequency ranges are relatively easy to produce. Considering this, the frequency characteristics of the vibration by the vibration device 2 may be frequency characteristics with a relatively large low frequency range, and the frequency characteristics of the vibration by the body vibration device 3 may be frequency characteristics with large middle and high frequency ranges.

[0033] As described above, the vibration device 2 of the present embodiment directly vibrates the string 101 that is more easily elastically deformed compared to the piece 103, and vibrates a stringed instrument such as the double bass 100 through the vibration of the string 101. Therefore, it is possible to suppress the attenuation of the vibration when the vibration of the vibration device 2 is transmitted to the string 101. Thereby, the string 101 can be vibrated efficiently. Therefore, it is possible to improve the volume of the sound produced by the stringed instrument according to the vibration by the vibration device 2. In addition, the acoustic characteristics of the stringed instrument when the string 101 is vibrated by the vibration device 2 can be made closer to the acoustic characteristics of the stringed instrument when the performer plays the stringed instrument.

[0034] In addition, since the vibration device 2 of the present embodiment directly vibrates the string 101, the vibration device 2 can be applied not only to the double bass 100 but also to various stringed instruments. Hereinafter, this point will be described. In the method in which the vibration device 2 directly vibrates the piece 103 (or the bridge), the durability of the piece 103 against the vibration by the vibration device 2 is required. Therefore, the method of directly vibrating the piece 103 can be applied only to stringed instruments in which the piece 103 is relatively large and strong. On the other hand, in the method in which the vibration device 2 directly vibrates the string 101 as in the present embodiment, since the piece 103 is not directly vibrated, 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 strength of the piece 103. This method can be applied to, for example, stringed instruments such as violins in which the size of the piece 103 is small and thin.

[0035] In addition, the vibration device 2 of the present embodiment includes a vibrating body 24 having a main body 23 and a vibrating body 24 that vibrates with respect to the main body 23, and a vibration transmission unit 22 that is provided so as to extend from the vibrating body 24 and contacts the string 101 to transmit the vibration of the vibrating body 24 to the string 101. Thereby, the vibration of the vibrating body 24 corresponding to the vibration signal input to the vibrator 21 can be transmitted to the string 101 through the vibration transmission unit 22.

[0036] Moreover, according to the vibration device 2 of the present embodiment, the vibration transmission unit 22 contacts a position on the string 101 that can be an antinode of the vibration of the string 101. Thereby, the string 101 can be vibrated with high efficiency in response to the vibration of the string 101 by the vibration device 2.

[0037] Moreover, the vibration device 2 of the present embodiment vibrates the string 101 in a direction intersecting the axial direction of the string 101. Thereby, the string 101 can be vibrated in a direction intersecting its axial direction. Such a vibration mode of the string 101 is close to the vibration mode of the string 101 when a player plays a stringed instrument such as the double bass 100. Therefore, the acoustic characteristics of the stringed instrument when the string 101 is vibrated by the vibration device 2 can be made closer to the acoustic characteristics of the stringed instrument when the player plays the stringed instrument.

[0038] Moreover, according to the vibration device 2 of the present embodiment, the vibration transmission unit 22 includes a clamping unit 25 that clamps the string 101 (driven body). Thereby, the vibration device 2 (particularly the vibrator 21) can be supported by the string 101. When the vibration device 2 is supported by the string 101, the vibration of the body portion 102 is not inhibited as compared with the case where the vibration device 2 is supported by the body portion 102. Therefore, the acoustic characteristics of the stringed instrument such as the double bass 100 that emits sound by the vibration of the string 101 by the vibration device 2 can be made closer to the acoustic characteristics of the stringed instrument when the player plays the stringed instrument. Moreover, according to the vibration device 2 of the present embodiment, since the clamping unit 25 clamps a plurality of strings 101, the vibration device 2 can be stably supported by the string 101 as compared with the case where the clamping unit 25 clamps only one string 101.

[0039] Moreover, according to the vibration device 2 of the present embodiment, the clamping unit 25 includes two plate portions 26 and 27 disposed on both sides of the string 101 (driven body), and a force applying unit 28 that applies a force in a direction to bring the two plate portions 26 and 27 closer to each other. Thereby, the vibration device 2 can be reliably supported by the string 101.

[0040] In addition, in the vibration device 2 of the present embodiment, the screw 28A, which is the force applying portion 28, is attached to the middle portions of the two plate portions 26 and 27 in the longitudinal direction. As a result, the string 101 can be sandwiched with an equal 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.

[0041] In addition, in the vibration device 2 of the present embodiment, the vibration transmission portion 22 can be brought into contact with other portions of the string 101 except for the portion between the bridge 103 and the fingerboard 104 (mainly the portion where the string is rubbed with a bow or plucked with fingers). For this reason, a player of a stringed instrument such as the double bass 100 can play the stringed instrument without being hindered by the vibration device 2 attached to the stringed instrument. That is, the player can play the stringed instrument while producing a playing sound on the stringed instrument using the vibration device 2. In addition, the player can easily compare the model performance with the player's own performance in terms of both sound and vibration by listening to the model playing sound produced on the stringed instrument using the vibration device 2 or by experiencing the vibration of the stringed instrument accompanying the model playing sound. Thereby, the player can efficiently understand or learn the playing method of the stringed instrument.

[0042] The vibration system 1 of the present embodiment includes a vibration device 2 that directly vibrates the string 101 and a body vibration device 3 that directly vibrates the body portion 102. For this reason, the frequency characteristics of vibrating the string 101 by the vibration device 2 and the frequency characteristics of vibrating the body portion 102 by the body vibration device 3 can be adjusted separately. Thereby, it is possible to easily adjust the acoustic characteristics of a stringed instrument such as the double bass 100 as compared with the case of vibrating only the string 101 or vibrating only the body portion 102.

[0043] In addition, 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 portion 102 are different, by making the frequency characteristics of the vibration by the vibration device 2 and the frequency characteristics of the vibration by the body vibration device 3 different from each other, it is possible to easily adjust the acoustic characteristics of a stringed instrument such as the double bass 100 by the vibration system 1.

[0044] Although the present invention has been described in detail above, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit of the present invention.

[0045] In the vibration device of the present invention, the force applying portion 28 of the sandwiching portion 25 may be an elastic body such as a spring. That is, the two plate portions 26 and 27 may be brought closer to each other by the elastic force of the elastic body.

[0046] The vibration device of the present invention may be attached to a plurality of stringed instruments, for example. For example, one vibration device 2 may be attached to a part of a plurality of strings 101 (for example, two strings 101L on the bass side), and another vibration device 2 may be attached to the remaining part of the plurality of strings 101 (for example, two strings 101H on the treble side). In this case, the frequency characteristics of the vibration signals received by the vibration devices 2 may be common among the plurality of vibration devices 2, or may be different. The frequency characteristics of the vibration signals may be different, for example, between the vibration device 2 attached to the treble side string 101H and the vibration device 2 attached to the bass side string 101L.

[0047] The vibration device of the present invention may be attached to each of a plurality of strings 101 of a stringed instrument, for example. In this case, each vibration device 2 can vibrate each string 101 at a frequency corresponding to the frequency band of each string 101. For example, the vibration device 2 attached to the bass side string 101L can vibrate the bass side string 101L at a low frequency corresponding to the low frequency band of the bass side string 101L. Thereby, it is possible to further approximate the acoustic characteristics of the stringed instrument when the player plays the stringed instrument.

[0048] In the vibration device of the present invention, the sandwiching portion 25 of the vibration transmission portion 22 is not limited to sandwiching the string 101 of the stringed instrument, and may sandwich any driven body (vibration target). That is, the vibration device of the present invention is not limited to being applied to stringed instruments.

Explanation of Reference Numerals

[0049] 1...Vibration system, 2...Vibrator, 3...Body vibrator, 21...Vibrator, 22...Vibration transmission part, 23...Main body, 24...Vibrating body, 25...Clamping part, 26...First plate part, 27...Second plate part, 28...Force applying part, 100...Contrabass (string instrument), 101...String (driven body), 102...Body, 103...Bridge

Claims

1. A vibration device that directly vibrates the strings of a stringed instrument and vibrates the stringed instrument through the vibration of the strings, and a body vibration device that directly vibrates the body of the stringed instrument, A vibration system in which the frequency characteristics of the vibration by the vibration device and the frequency characteristics of the vibration by the body vibration device are different from each other.

2. A vibrator having a main body and a vibrating body that vibrates in a predetermined vibration direction with respect to the main body, A vibration transmission unit provided so as to extend from the vibrating body and contacting the string of the stringed instrument to transmit the vibration of the vibrating body to the string, A vibration device comprising: A body vibration device that directly vibrates the body of the stringed instrument, A vibration system in which the frequency characteristics of the vibration by the vibration device and the frequency characteristics of the vibration by the body vibration device are different from each other.

3. The vibration system according to claim 2, wherein the vibration transmission unit contacts a position on the string that can be an antinode of the vibration of the string.

4. The vibration system according to any one of claims 1 to 3, wherein the string is vibrated in a direction intersecting the axial direction of the string.

5. A vibrator having a main body and a vibrating body that vibrates in a predetermined vibration direction with respect to the main body in response to a vibration signal, A vibration transmission unit provided so as to extend from the vibrating body and contacting the string of the stringed instrument to transmit the vibration of the vibrating body to the string, The vibration transmission unit includes a clamping portion that clamps the string, By clamping the string with the clamping portion, the vibration transmission unit is held in a state of contacting the string, The clamping portion includes two plate portions disposed on both sides of the string, A vibration device comprising a force applying portion that applies a force in a direction to bring the two plate portions closer to each other.

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