JP2022151642A - Stringed instrument and acoustic effect device - Google Patents

Abstract

To easily control an effect imparting section even during a musical performance on a stringed instrument.SOLUTION: A stringed instrument 10 comprises: a musical instrument body 11; strings fitted to the musical instrument body 11; a pickup 13 which detects vibrations of the strings and outputs a string vibration signal corresponding to the vibrations; a detection sensor 14 which is fitted to the musical instrument body 11, and outputs a detection signal corresponding to force applied to the musical instrument body 11; and a control section 15 which is fitted to the musical instrument body 11, and controls operation of an effect imparting section 16 imparting an effect to the string vibration signal based upon a detection signal output from the detection sensor 14.SELECTED DRAWING: Figure 3

Description

The present invention relates to stringed musical instruments and sound effects devices.

Patent Document 1 discloses a technique for controlling the operation of an effect imparting section (effector) that imparts a musical or acoustic effect to a string vibration signal generated according to the vibration of a string on the side plate of an acoustic guitar (stringed instrument). A configuration is disclosed in which various operators are provided for the purpose. The manipulator in Patent Document 1 is configured to be operated by rotating it with a finger.

WO2018/201100

However, in the configuration of Patent Document 1, the operator for controlling the effect imparting section is provided on the side plate away from the strings. Therefore, in order for the performer to control the effect imparting portion while playing the acoustic guitar (specifically, while plucking the strings with his/her fingers), it is necessary to move his/her fingers away from the strings to the side plate. That is, there is a problem that it is difficult for the performer to control the operation of the effect imparting section while playing the acoustic guitar.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a stringed instrument and a sound effect device that allow a player to easily control an effect imparting section even during performance of the stringed instrument. With the goal.

A first aspect of the present invention comprises a musical instrument body, a string attached to the musical instrument body, a pickup for detecting vibration of the string and outputting a string vibration signal corresponding to the vibration, and a string attached to the musical instrument body. A detection sensor attached to output a detection signal corresponding to the force applied to the musical instrument body, and an effect attached to the musical instrument body to apply an effect to the string vibration signal based on the detection signal. and a control section that outputs a control signal for controlling the operation of the applying section.

A second aspect of the present invention is a sound effect device used for a stringed instrument, comprising: a pickup for detecting vibration of strings of the stringed instrument and outputting a string vibration signal corresponding to the vibration; By being attached, it controls the operation of a detection sensor that outputs a detection signal according to the force applied to the musical instrument body, and the effect imparting section that imparts an effect to the string vibration signal based on the detection signal. and a control unit that outputs a control signal to control the sound effect.

A third aspect of the present invention includes a musical instrument main body, strings attached to the musical instrument main body, a pickup that detects vibration of the strings and outputs a string vibration signal corresponding to the vibration, and the musical instrument main body. A detection sensor that outputs a detection signal according to the player's operation on the top plate or the back plate of the body, and a detection sensor that is attached to the instrument body and applies an effect to the string vibration signal based on the detection signal. and a control section that outputs a control signal for controlling the operation of the effect imparting section.

According to the present invention, the performer can easily control the effect imparting section even while playing the stringed instrument.

1 is a front view showing a stringed instrument according to one embodiment of the present invention; FIG. 1 is a cross-sectional view schematically showing a stringed instrument according to an embodiment of the present invention; FIG. 1 is a block diagram of a stringed instrument according to one embodiment of the present invention; FIG. FIG. 4 is a block diagram showing an internal configuration of an effect imparting unit in FIG. 3; FIG. FIG. 4 is a block diagram of a stringed instrument according to another embodiment of the invention;

An embodiment of the present invention will be described below with reference to FIGS.
As shown in FIGS. 1-3, the stringed instrument 10 of this embodiment is an acoustic guitar. The stringed instrument 10 includes a musical instrument body 11 , strings 12 , a pickup 13 , a detection sensor 14 and a controller 15 . Further, the stringed instrument 10 of this embodiment further includes an effect imparting section 16 and a vibration exciter 17 .

As shown in FIGS. 1 and 2, the musical instrument body 11 has a body 21 and a neck 22 .
The trunk portion 21 is formed in a box shape having a cavity S inside. The trunk portion 21 has a front plate 23 , a back plate 24 and side plates 25 . The front plate 23 and the back plate 24 are each formed in a flat plate shape. The front plate 23 and the back plate 24 are spaced apart from each other in their plate thickness direction. The side plate 25 extends from the peripheral edge of the back plate 24 to the peripheral edge of the front plate 23 . The front plate 23, the back plate 24 and the side plates 25 constitute the trunk portion 21 having a cavity S therein.
A sound hole 26 (sound hole) is formed through the top plate 23 of the body portion 21 in the plate thickness direction. The sound hole 26 connects the cavity S of the body 21 to the space outside the body 21 . A tail piece 27 is provided on the outer surface 23 a of the front plate 23 to fasten the first longitudinal end of the string 12 .

Neck 22 extends away from body 21 . A head 28 is provided at the tip of the neck 22 for winding the second end side of the string 12 in the longitudinal direction.
The strings 12 are stretched across the body 21 and the neck 22 . Specifically, the first end of the string 12 is fastened to the tail piece 27 of the body 21 and the second end side of the string 12 is wound around the head 28 . The string 12 is thereby stretched between the tailpiece 27 and the head 28 .

Between the string 12 stretched on the outer surface 23a of the top plate 23 and the outer surface 23a of the top plate 23, a vibration transmitting portion 29 (bridge) is provided. As a result, in the stringed instrument 10 , the vibration of the strings 12 is transmitted to the top plate 23 via the vibration transmitting portion 29 , thereby causing the top plate 23 to vibrate. As a result, the air inside the trunk portion 21 (cavity S) resonates, and the sound is radiated to the outside of the trunk portion 21 .

The pickup 13 detects vibration of the string 12 and outputs a string vibration signal corresponding to the vibration of the string 12 . 1 and 2, the pickup 13 is arranged at the position where the sound holes 26 are formed in the top plate 23 so as not to impede the vibration of the top plate 23 accompanying the vibration of the strings 12, but the present invention is not limited to this. .

The effect applying unit 16 (effector) shown in FIGS. 3 and 4 is a sound signal obtained by applying a musical or acoustic effect to the string vibration signal output from the pickup 13 (or an equalizer 18, which will be described later). (so-called wet sound) and outputs the sound signal.

The effect imparting section 16 includes an effect imparting element 31 for imparting predetermined musical or acoustic effects such as looper, distortion, wah-wah, reverb, flanger, and the like. The effect imparting section 16 may include, for example, only one effect imparting element 31, but in this embodiment, as shown in FIG. .
The effect of the looper (effect imparting element 31a), which is one of the effect imparting elements 31, is to record a sound signal based on the input string vibration signal by switching between the start and stop of recording. This is the effect of repeatedly reproducing the sound signal.

The effect applying unit 16 also includes a mixing circuit 32 . In the mixing circuit 32, the output signal (wet sound) output from each effect element in response to the string vibration signal input to the effect imparting section 16 and the string vibration signal (dry sound) that does not pass through the effect element are combined into an arbitrary signal. The mixed or selected signal is output as a sound signal to the outside of the effect imparting section 16 (vibrator 17 or amplifier 19, which will be described later).
The effect applying section 16 is attached to the musical instrument main body 11 . The effect applying section 16 may be stored in a storage section 41 attached to the body section 21 as shown in FIG. 1, for example.

As shown in FIGS. 1 to 3, the vibration exciter 17 is attached to the body portion 21 of the musical instrument body 11 . The vibrator 17 vibrates the trunk 21 based on the sound signal output from the effect imparting section 16 in response to the string vibration signal. When the vibration exciter 17 vibrates the trunk 21 , the sound imparted with the effect by the effect imparting unit 16 is radiated to the outside of the trunk 21 . Vibrator 17 may be a known voice coil type or any other type of electrical/vibrational transducer.

The vibration exciter 17 may be attached to the back plate 24 or the side plate 25, for example, but is attached to the front plate 23 in this embodiment. Specifically, the vibration exciter 17 is attached to the inner surface 23 b of the front plate 23 . The vibration exciter 17 is located in a region of the top plate 23 away from the surrounding region of the sound hole 26 (the region where the detection sensor 14 is arranged). In FIG. 1, when the stringed instrument 10 is viewed from the front, the vibration exciter 17 is located in a region of the body portion 21 where the sound hole 26 and the tailpiece 27 are sandwiched between the neck 22 and the body portion 21 .

As shown in FIGS. 3 and 4, the stringed instrument 10 of this embodiment further includes an equalizer 18 and an amplifier 19 . The equalizer 18 adjusts the frequency characteristics of the string vibration signal output from the pickup 13 . The equalizer 18 adjusts the frequency characteristics of the string vibration signal so as to emphasize a frequency range (for example, overtone components) higher than the fundamental frequency range of the string 12, for example. The equalizer 18 outputs the string vibration signal whose frequency characteristics are adjusted to the effect imparting section 16 . The amplifier 19 amplifies the sound signal output from the effect imparting section 16 and outputs the amplified sound signal to the vibration exciter 17 .
In this embodiment, the equalizer 18 and amplifier 19 are attached to the instrument body 11 . The equalizer 18 and the amplifier 19 may be stored, for example, in the storage section 41 shown in FIG. 1, like the effect imparting section 16 .

As shown in FIGS. 1-3, the detection sensor 14 is attached to the instrument body 11 . The detection sensor 14 outputs a detection signal corresponding to the force applied to the musical instrument body 11 . The detection sensor 14 may be, for example, a deflection detection sensor 14 (for example, a strain gauge) that detects deflection of the instrument body 11 due to force being applied to the instrument body 11 . Also, the detection sensor 14 may be, for example, a pressure sensor that detects pressure applied to the instrument body 11 . Further, the detection sensor 14 may be an electrostatic contact sensor that detects, for example, the player's contact with the musical instrument body 11 .

In this embodiment, the detection sensor 14 is attached to a portion of the body 21 . The detection sensor 14 may be attached to the back plate 24 or the side plate 25, for example, but is attached to the front plate 23 as shown in FIGS. Specifically, the detection sensor 14 is attached to the inner surface 23 b of the front plate 23 . Further, the detection sensor 14 is positioned in the area surrounding the sound hole 26 on the top plate 23 . In FIG. 1, when the stringed instrument 10 is viewed from the front, the detection sensor 14 is positioned on the right side of the string 12 and the sound hole 26, but it may be positioned on the left side, for example.
Areas around the sound holes 26 (especially areas on the right and left sides of the strings 12 and the sound holes 26 in FIG. 1) of the top plate 23 are the strings 12 and 26 of the stringed instrument 10 such as a guitar. This is the area where the player's fingers (hands and fingers) are mainly located when playing.
The detection sensor 14 is not limited to the inner surface 23b of the front plate 23, and may be attached to the inner surface of the back plate 24 or the side plate 25, for example. Further, the detection sensor 14 may be attached to the outer surface (surface) of the front plate 23 , the back plate 24 , or the side plate 25 of the trunk portion 21 . Moreover, the detection sensor 14 may be embedded inside the front plate 23 , the back plate 24 , or the side plate 25 . In other words, the detection sensor 14 may be attached to the body portion 21 so as to be able to detect the bending of the instrument body 11 .

As shown in FIG. 1 , the stringed instrument 10 of this embodiment further includes a recognized part 50 . The recognized portion 50 is provided on the outer surface of the trunk portion 21 . The recognized portion 50 of the present embodiment is provided on the outer surface 23 a of the front plate 23 of the body portion 21 . A recognized portion 50 indicates the position of the detection sensor 14 attached to the inner surface of the body portion 21 . The recognized portion 50 has a role of allowing the performer to visually or tactilely recognize the position of the detection sensor 14 .

The recognized portion 50 may be provided at least in a region of the outer surface of the body portion 21 where a detection signal corresponding to the force is output from the detection sensor 14 when a force is applied to the body portion 21 . . Therefore, the recognized part 50 may be arranged near the detection sensor 14 within a range that does not overlap with the detection sensor 14 when viewed from the outside of the body part 21 . Further, the recognized part 50 may be arranged at a position overlapping with, for example, a part of the detection sensor 14 when viewed from the outside of the body part 21 . In the example shown in FIG. 1 , the recognized portion 50 is arranged at a position overlapping the entire detection sensor 14 when viewed from the outside of the body portion 21 .

In FIG. 1, the size of the recognized portion 50 seen from the outside of the body portion 21 is larger than the size of the detection sensor 14, but it may be smaller than the size of the detection sensor 14, for example. In FIG. 1, the shape of the recognized portion 50 viewed from the outside of the body portion 21 is formed in a rectangular shape similar to the detection sensor 14, but it is not limited to this, and may be formed in any shape. may be formed.

The recognized part 50 may be, for example, a sticker attached to the outer surface of the body part 21 . When the recognized portion 50 is a sticker, there is a step between the outer surface of the trunk portion 21 and the recognized portion 50 . As a result, the player of the stringed instrument 10 can tactilely recognize the position of the detection sensor 14 from the step.
Also, the sticker as the recognized portion 50 may be opaque, translucent, or transparent. For example, letters, symbols, patterns, pictures, and the like may be formed on the sticker by printing or the like. Also, the sticker may be surface-treated, for example, so that the surface roughness is different from that of the outer surface of the body portion 21 . Also, the sticker may be a texture sticker formed by engraving, for example, letters, symbols, patterns, pictures, or the like. Forming the sticker in this manner also allows the player of the stringed instrument 10 to visually or tactilely recognize the position of the detection sensor 14 from the step.

When the recognized portion 50 is a sticker, the recognized portion 50 can be provided on the outer surface of the trunk portion 21 more inexpensively and easily than when the recognized portion 50 is a decal, an inlay, or a branding iron, which will be described later. can. Also, the recognized portion 50 can be easily removed (peeled off) from the trunk portion 21 .

Also, the recognized portion 50 may be, for example, a decal or an inlay provided on the outer surface of the trunk portion 21 . Also, the recognized portion 50 may be a branding iron formed on the outer surface of the body portion 21, for example. When the part to be recognized is a decal, it is necessary to protect the decal with a transparent coating film (coating layer). The inlay has a structure in which a groove is formed in the outer surface of the body portion 21 and another material (such as wood or shell) is fitted in the groove. If the recognized portion 50 is a decal, an inlay, or a branding iron, the player of the stringed instrument 10 can mainly visually recognize the position of the detection sensor 14 . If the recognized portion 50 is a decal, an inlay, or a branding iron, the appearance design of the stringed instrument 10 can be improved compared to a sticker.

Also, the recognized portion 50 may be formed by various types of printing such as stamp printing or sticker printing directly applied to the outer surface of the body portion 21, for example. When the recognized portion 50 is formed by printing, the player of the stringed instrument 10 can mainly visually recognize the position of the detection sensor 14 . When the recognized portion 50 is formed by printing, it is possible to improve the degree of freedom in designing characters, symbols, patterns, pictures, and the like.

The controller 15 shown in FIGS. 3 and 4 is attached to the musical instrument main body 11 . The control unit 15 may be stored, for example, in the storage unit 41 shown in FIG. 1, like the effect imparting unit 16 . 3 and 4, based on the detection signal output from the detection sensor 14, the control section 15 outputs a control signal for controlling the operation of the effect imparting section 16 to the effect imparting section 16. FIG. The control section 15 may output different types of control signals from the control section 15 according to, for example, the number of times the force is applied to the musical instrument body 11 and the length of time the force is applied to the musical instrument body 11 .

The control unit 15 outputs a control signal according to the magnitude of the amplitude (intensity) of the detection signal output from the detection sensor 14 or the height of the frequency of the detection signal. Specifically, the control unit 15 outputs the control signal when the amplitude of the detection signal is greater than the maximum amplitude of the top plate 23 (musical instrument main body 11 ) when sound is emitted from the stringed instrument 10 . Further, the control section 15 outputs a control signal when the frequency of the detection signal is lower than the lowest frequency of the top plate 23 (musical instrument main body 11) when sound is radiated from the stringed instrument 10. FIG. As a result, it is possible to suppress or prevent the output of the control signal from the control unit 15 when the stringed instrument 10 only emits sound.

The control signal output from the control section 15 may be, for example, a signal for switching ON/OFF of the effect imparting section 16 (effect imparting element 31). In this case, the control signal output from the control section 15 may be, for example, a signal for switching start and stop of recording by a looper (effect imparting element 31a), which is one of the effect imparting elements 31. FIG.
In addition, the control signal output from the control unit 15 determines the strength and magnitude of the effect imparted to the string vibration signal in accordance with the magnitude of the force applied to the top plate 23 (instrument body 11), for example. It may be a signal for adjustment. For example, the magnitude of distortion, wah-wah, reverb, and flanger effects, and the magnitude of arming (arm-down/arm-up) effects are adjusted according to the magnitude of the force applied to the top plate 23 (instrument body 11). may be

As described above, the effect imparting section 16 of this embodiment includes a plurality of effect imparting elements 31 shown in FIG. Therefore, the effect imparting section 16 further includes a selector 33 that selects which effect imparting element 31 the control signal output from the control section 15 is to be inputted. The selector 33 may operate, for example, according to a control signal output from the control unit 15, or may operate according to an operation input by an operator (not shown) provided separately.

In this embodiment, the storage unit 41 shown in FIG. 1 includes a power source for supplying power to these electrical components, a selector 33 Various operators such as an operator and a power switch may be stored.

As described above, in the stringed instrument 10 of this embodiment, the detection sensor 14 attached to the instrument main body 11 functions as an operator for controlling the operation of the effect imparting section 16 . That is, the player of the stringed instrument 10 applies force to the instrument body 11 (for example, bends the surface of the body 21, or hits or touches the surface of the body 21) to control the operation of the effect imparting section 16. can do. This makes it possible to control the operation of the effect imparting section 16 without moving the player's fingers too far from the strings 12 . Therefore, the player can easily control the effect imparting section 16 while playing the stringed instrument 10 .

Further, in the stringed instrument 10 of this embodiment, the detection sensor 14 is attached to a portion of the body portion 21 of the instrument body 11 . For this reason, the performer applies pressure to a part of the surface of the body part 21 by pressing a part of the body part 21 with his/her arms or fingers, or bends a part of the surface of the body part 21. The operation of the effect imparting section 16 can be easily controlled by hitting or touching a part of the surface of the body section 21 . Also, when the player plays the stringed instrument 10 by plucking the strings 12 , the player's arms and fingers generally rest on the body portion 21 . By applying force to the top plate 23 of the body part 21 with the arms and fingers of the player in this state, the effect is imparted while the player is playing the stringed instrument 10 without changing the positions of the arms and fingers. The operation of the portion 16 can be easily controlled.

Furthermore, in the stringed instrument 10 of this embodiment, the detection sensor 14 is attached to the front plate 23 of the body 21 . Therefore, the player can bend the top plate 23 and control the operation of the effect imparting section 16 simply by pressing the top plate 23 with his or her fingers. Here, when the player plays the stringed instrument 10 by plucking the strings 12 , the fingers of the player are generally positioned on the top plate 23 . Therefore, while playing the stringed instrument 10, the performer can easily control the operation of the effect imparting section 16 without substantially changing the position of the fingers.
Further, in the stringed instrument 10 of this embodiment, the detection sensor 14 is attached to the inner surface of the body portion 21 . As a result, it is possible to prevent deterioration of the appearance design of the stringed instrument 10 due to the attachment of the detection sensor 14 to the body portion 21 .

Further, in the stringed instrument 10 of the present embodiment, the vibration exciter 17 attached to the body 21 vibrates the body 21 based on the sound signal output from the effect imparting section 16 in response to the string vibration signal from the pickup 13. to vibrate. As a result, the stringed instrument 10 (trunk portion 21) can produce sounds imparted with musical or acoustic effects.

Further, in the stringed instrument 10 of this embodiment, the effect imparting section 16 is attached to the instrument main body 11 . As a result, the stringed instrument 10 alone can play the sound to which the effect is imparted by the effect imparting section 16 . This effect is particularly useful when the stringed instrument 10 has the appearance of an acoustic guitar. This point will be described below.
For example, if the effect imparting section 16 is provided separately from the acoustic guitar, it is necessary to electrically connect the control section 15 of the stringed instrument 10 and the effect imparting section 16 with a connection cord or the like. However, since connection cords are not connected to a normal acoustic guitar, the appearance of the connection cords extending from the stringed instrument 10 is unnatural, unlike the appearance of a normal acoustic guitar. On the other hand, if the effect imparting part 16 is attached to the musical instrument body 11, there is no need to connect the connection cord to the stringed instrument 10, so the stringed instrument 10 can have the same appearance as an ordinary acoustic guitar.

Further, in the stringed instrument 10 of this embodiment, the effect imparting section 16 includes a looper. Furthermore, the control signal output from the control unit 15 includes a signal for switching between starting and stopping recording by the looper. Therefore, the player can easily switch the start and stop of recording by the looper without moving the fingers far from the strings 12 (that is, without disturbing the performance of the stringed instrument 10). In other words, it becomes easier for the performer to take advantage of the looper's function.

The stringed instrument 10 of the present embodiment also includes a recognized portion 50 that is provided on the outer surface of the body portion 21 and indicates the position of the detection sensor 14 provided on the inner surface of the body portion 21 . Therefore, even if the player of the stringed instrument 10 cannot visually recognize the detection sensor 14 from the outside of the body section 21 , the position of the detection sensor 14 can be grasped by the recognized section 50 . As a result, it is possible to suppress or prevent the performer from failing to operate the detection sensor 14 . A player's failure to operate the detection sensor 14 means that, for example, even if the player presses the torso 21, this force is not transmitted to the detection sensor 14, and the detection signal is not output from the detection sensor 14. .

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 scope of the present invention.

In the present invention, the effect imparting section 16 may not be attached to the musical instrument main body 11, that is, it may not be provided in the stringed instrument. In this case, the stringed instrument 10A may be provided with an external output unit 51, for example, as shown in FIG. The external output unit 51 outputs the control signal output from the control section 15 to the effect imparting section 16 provided outside the musical instrument body 11 . The external output unit 51 may be an external connection terminal for wired connection with the effect imparting section 16 or may be a wireless communication unit for wireless connection with the effect imparting section 16 .
In the stringed instrument 10A having the external output unit 51, the effect imparting section 16 can be provided separately from the stringed instrument 10A, so that any type of effect imparting section 16 can be selected and used.

In the present invention, the detection sensor 14 may be attached to the neck 22, for example. In this case, the player bends the neck 22 while playing the stringed instrument 10 or presses the portion of the neck 22 where the detection sensor 14 is provided to apply force to the neck 22, thereby causing the detection sensor 14 to move. can output a detection signal from. That is, even if the detection sensor 14 is provided on the neck 22 , the player can easily control the effect imparting section 16 while playing the stringed instrument 10 .

The present invention may be a sound effect device 100 (see FIGS. 3 and 5) that includes at least a pickup 13, a detection sensor 14, and a control section 15 and is used for the stringed instrument 10. FIG. The sound effect device 100 may further include one or both of the vibration exciter 17 and the effect imparting section 16 . Also, the sound effect device 100 may include an equalizer 18 and an amplifier 19 .
By attaching the sound effect device 100 to an existing stringed instrument, the existing stringed instrument can have the same functions as the stringed instruments 10 and 10A of the above-described embodiments. For example, by attaching the detection sensor 14 of the sound effect device to the instrument body 11 of an existing stringed instrument, the detection sensor 14 functions as an operator for controlling the operation of the effect imparting section 16 . As a result, the player of the stringed instrument 10 can control the operation of the effect imparting section 16 by applying force to the instrument body 11 (for example, bending the body 21 or the neck 22, or striking or touching it). .

In the present invention, the part of the player who applies force to a part of the stringed instrument in order to cause the detection sensor 14 to output a detection signal is any part other than the hand (for example, the arm, elbow, abdomen, waist, thigh, etc.). may In the above-described embodiment, the detection sensor 14 is attached to the top plate 23 of the body 21 on the premise that the detection sensor 14 is operated by the hand of the player. In addition, the detection sensor 14 may be provided at a portion of the stringed instrument (for example, a predetermined position on the top plate 23) where the elbow is likely to hit. Further, for example, when the detection sensor 14 is attached to the back plate 24 and the side plates 25 of the body 21, the performer's abdomen, waist, thighs, etc., exert force on the back plate 24 and the side plates 25, which are parts of the stringed instrument. may be added. Further, the detection sensor 14 is provided inside (inner surface) of the body portion 21, but may be provided on the surface (outer surface) of the body portion 21. FIG.

The present invention can also be regarded as one in which the detection sensor outputs a detection signal according to the player's operation on the front plate 23 or the back plate 24 of the body 21 of the musical instrument body. In the present invention, "the player's operation on the front plate 23 or the back plate 24" includes the actions described in the above embodiments, that is, the player bends the front plate 23 or the back plate 24 of the body part 21, Hitting the front plate 23 or the back plate 24 of the part 21, touching the front plate 23 or the back plate 24, moving the front plate 23 or the back plate 24 close to or away from the front plate 23 or the back plate 24, etc. correspond to this.
Further, in the stringed instrument of the present invention, as a detection sensor, instead of or in addition to the above-described sensor for detecting the player's operation, a static sensor for detecting the movement of the player's hand or other part closer to or away from it. Electric sensors can also be used. Also, an electrostatic contact sensor or a membrane switch can be used as a sensor for detecting a contact action of a player's hand or other part. When the electrostatic sensor is attached to the top plate 23 or the back plate 24 of the body 21, the performer can touch the top plate 23 or the back plate 24 by touching the top plate 23 or the back plate 24. 23 and the back plate 24 can be moved toward and away from each other. When the electrostatic contact sensor or the membrane switch is attached to the front plate 23 or the back plate 24 of the body 21, the above-mentioned "performer's operation on the front plate 23 or the back plate 24" can be performed by the player's hand or the like. An action of contacting the part with the front plate 23 or the back plate 24 can be included. Note that the electrostatic sensor is a movement of the performer moving parts such as hands or arms closer to or away from the side plate 25 in place of the top plate 23 or the back plate 24, or in addition to the top plate 23 or the back plate 24. may be detected. In addition, the electrostatic contact sensor or membrane switch allows the player to contact the side plate 25 instead of the top plate 23 or the back plate 24, or in addition to the top plate 23 or the back plate 24. Motion may be detected. Also in these cases, when the detection sensor is attached inside the trunk portion 21 , the recognized portion 50 may be provided on the surface side (outer surface side) of the trunk portion 21 . Also in these cases, the detection sensor may be provided inside (inner surface) of the body portion 21 or on the surface (outer surface) of the body portion 21. It may be embedded inside. In other words, the detection sensor may be attached to the body portion 21 so as to be able to detect the player's operation. When the detection sensor is provided on the surface of the trunk portion 21, the detection sensor itself also serves as the recognized portion.

The present invention is not limited to acoustic guitars having a body portion 21 having a cavity S inside, but is applicable to guitars that do not generate resonance due to the vibration of the strings (for example, electric guitars that do not have cavities inside the body, It may also be applied to an electric bass, or a silent guitar (registered trademark) having a body part made up of a frame (frame). In this case, if it is an electric guitar, the detection sensor may be provided near the pickup, for example. Also, if the guitar has a body portion made up of a frame, the detection sensor may be provided on the frame, for example.
The present invention is applicable not only to guitars having a body and neck, but also to stringed instruments including at least a musical instrument body and strings attached to the musical instrument body, such as violins, violas, cellos, double basses, and the like. be.

DESCRIPTION OF SYMBOLS 10, 10A... Stringed instrument, 11... Musical instrument body, 12... String, 13... Pickup, 14... Detection sensor, 15... Control part, 16... Effect imparting part, 17... Vibrator, 21... Body part, 22... Neck, 23... Front plate 31... Effect imparting element 50... Recognition part 51... External output unit 100... Sound effect device

Claims (9)

the instrument body,
strings attached to the instrument body;
a pickup that detects the vibration of the string and outputs a string vibration signal corresponding to the vibration;
a detection sensor attached to the instrument body for outputting a detection signal corresponding to the force applied to the instrument body;
a control unit attached to the musical instrument body for outputting a control signal for controlling the operation of an effect imparting unit that imparts an effect to the string vibration signal based on the detection signal;
A stringed instrument with 2. The stringed instrument according to claim 1, wherein the detection sensor is attached to a portion of the body of the instrument body. A vibrator attached to the body of the musical instrument body to vibrate the body,
3. The stringed instrument according to claim 1, wherein the vibrator vibrates the body based on a sound signal output from the effect imparting section in response to the string vibration signal. 4. The stringed instrument according to any one of claims 1 to 3, wherein the effect imparting section is attached to the instrument body. 4. The stringed instrument according to any one of claims 1 to 3, further comprising an external output unit for outputting the control signal to the effect imparting section provided outside the instrument body. the effect imparting unit includes a looper,
The stringed instrument according to any one of claims 1 to 5, wherein the control signal output from the control section includes a signal for switching start and stop of recording by the looper. A sound effect device for stringed instruments,
a pickup that detects vibration of the strings of the stringed instrument and outputs a string vibration signal corresponding to the vibration;
a detection sensor that is attached to the instrument body of the stringed instrument to output a detection signal corresponding to the force applied to the instrument body;
a control unit for outputting a control signal for controlling the operation of an effect imparting unit that imparts an effect to the string vibration signal based on the detection signal;
A sound effects device comprising a the instrument body,
strings attached to the instrument body;
a pickup that detects the vibration of the string and outputs a string vibration signal corresponding to the vibration;
a detection sensor that outputs a detection signal according to the player's operation on the top plate or the back plate of the body of the musical instrument body;
a control unit attached to the musical instrument body for outputting a control signal for controlling the operation of an effect imparting unit that imparts an effect to the string vibration signal based on the detection signal;
A stringed instrument with The detection sensor is attached to the inner surface of the body of the musical instrument body,
9. The stringed instrument according to any one of claims 1 to 6 and 8, further comprising a recognizable part provided on the outer surface of the body and indicating the position of the detection sensor.

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