JP2000148148A - Stringed instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce timbre close to an acoustic stringed instrument, and to control the sounded volume. SOLUTION: A pickup 30 produces an oscillating signal corresponding to the oscillation of a string of a violin, a finger board or a sound body that are not illustrated and provides the signal for a head amplifier 31. The oscillating signal amplified by the head amplifier 31 is provided for a signal processor 32. An error pickup 36 attached to a back board 21 detects the oscillation of the sound body 11 to provide output for the signal processor 32. The signal processor 32 generates an oscillation providing signal according to an operation mode specified by a switch 33 when these signals are provided. The oscillation providing signal is amplified by an amplifier 34, and then, is provided for a coil 24. A sound post 23 oscillates due to a magnetic action between the coil 24 and the sound post 23 comprising a magnet, and the body is resonated to produce musical sound.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stringed musical instrument such as a guitar and a violin that can control the amount of sound produced.

[0002]

2. Description of the Related Art In a conventional electric violin, a pick-up detects a string vibration corresponding to a bowing action by a player's bow or a string action by a finger or a pick, amplifies the detection signal, and performs a filtering process. By doing so, a tone signal is generated. With such an electric violin, it is possible to practice playing while listening to musical sounds with headphones without generating a loud sound. Further, it is also possible to adjust the generated sound volume by adjusting the amplification factor.

[0003]

However, in the electric violin as described above, since a musical tone is generated based on an electric signal, the volume is extremely low and the sound quality is extremely poor when the electric violin is in an electrically off state. Hardly functions as a natural instrument. Further, since a musical tone is generated from a speaker or headphones based on an electric signal, there is a problem that a tone color is different from that of an original acoustic violin.

The present invention has been made in view of the above circumstances, and is capable of generating a timbre close to that of an acoustic stringed instrument, controlling the sound generation amount, and electrically turning off. It is an object of the present invention to provide a stringed musical instrument that functions as an original musical instrument even in the above state.

[0005]

In order to solve the above-mentioned problems, a stringed musical instrument according to the present invention has a string, a front plate and a back plate which are arranged to face each other, and has a box-like sound which resonates by vibration of the string. A vibration transmission member disposed between the body, the front plate and the back plate, for transmitting vibration to at least one of the front plate and the back plate, and a first state detecting state of vibration generated from the string; Detecting means, and a second detecting means for detecting vibration generated in at least one of the front plate and the back plate,
A signal processing means for generating a vibration applying signal based on the detection signals detected by the first detecting means and the second detecting means, and a vibration corresponding to the vibration applying signal generated by the signal processing means. And a vibration imparting means for imparting the vibration to the vibration transmitting member.

According to this structure, when the player rubs the strings, the sounding body resonates due to the vibration of the strings and generates a musical tone.
At this time, the vibration state generated from the string due to the bowing operation is detected by the first detecting means. The signal processing means generates a vibration imparting signal based on the detection signal. Then, the vibration applying means applies the vibration according to the vibration applying signal to the vibration transmitting member. Thereby, the vibration from the vibration applying means is transmitted to the front plate and the back plate. Further, the second detecting means detects the vibration of the sounding body caused by the resonance with the vibration generated in the sounding body and the vibration of the string by the vibration applying means applying the vibration. The signal processing means, based on the detection signal of the second detection means in addition to the detection signal from the first detection means,
Generate a vibration application signal. Thereby, the vibration applied to the sound cylinder can be controlled more accurately. In this way, the sound cylinder resonates with the vibration from the string and the vibration from the vibration applying means to generate a musical sound. Therefore, it is possible to more accurately control the vibration transmitted to the sound cylinder, and it is possible to change the sound generation amount. Further, even in the state of being electrically turned off, the sounding body resonates due to vibration from the strings, so that it is possible to generate musical tones in the same manner as a normal stringed instrument. Further, since the sound is generated by resonating the sounding body without using a speaker or headphones, a tone close to that of an original acoustic stringed instrument can be played.

Further, the stringed musical instrument according to the second aspect is characterized in that, in the stringed instrument according to the first aspect, the vibration applying means applies the vibration to the vibration transmitting member in a non-contact manner.

According to this structure, when the vibration applying means does not apply vibration to the vibration transmitting member, the vibration of the sounding body is not affected even when the user performs a performance and the sounding body vibrates. It is not affected by the application means. Therefore, when the vibration applying means does not apply vibration, it is possible to play a tone closer to an acoustic stringed instrument.

According to a third aspect of the present invention, in the stringed musical instrument according to the first or second aspect, the signal processing means is configured such that the vibration having substantially the same phase as the vibration detected by the second detecting means. It is characterized in that a vibration imparting signal to be transmitted to the trunk is generated.

According to this configuration, vibrations having the same phase as the vibration generated in the sounding body are given, that is, the vibration transmitted to the sounding body is amplified. Therefore, it is possible to make the sound volume larger than that of a normal stringed instrument.

According to a fourth aspect of the present invention, in the stringed musical instrument according to the first or second aspect, the signal processing means is configured to generate a vibration substantially opposite in phase to the vibration detected by the second detecting means. It is characterized by generating a vibration imparting signal to be transmitted to the sound cylinder.

[0012] According to this configuration, a vibration having a phase opposite to that of the vibration generated in the sound cylinder is given, that is, the vibration transmitted to the sound cylinder is attenuated. Therefore, the sound volume can be made smaller than that of a normal stringed instrument.

[0013] A stringed musical instrument according to a fifth aspect includes a string,
A box-shaped sound cylinder that has a front plate and a back plate that are arranged to face each other and resonates with the vibration of the string, and is disposed between the front plate and the back plate, and the front plate and the back plate A pillar for transmitting and receiving vibrations between the strings, a first detecting means for detecting a state of vibration generated from the strings, and a second detection for detecting vibrations generated in at least one of the front plate and the back plate Means, a signal processing means for generating a vibration applying signal based on the detection signals detected by the first detecting means and the second detecting means, and a response to the vibration applying signal generated by the signal processing means. Vibration imparting means for imparting the vibrating vibration to the soul pillar.

According to this configuration, when the player rubs the strings, the sounding body is resonated by the vibration of the strings to generate a musical tone.
At this time, a vibration state generated from the string due to the bowing operation is detected by the first detection means, and a vibration signal is generated. The signal processing means generates a vibration imparting signal based on the vibration signal. Then, the vibration applying means applies the vibration according to the vibration applying signal to the vibration transmitting member. Thereby, the vibration from the vibration applying means is transmitted to the front plate and the back plate. Further, the second detecting means detects the vibration of the sounding body caused by the resonance with the vibration generated in the sounding body and the vibration of the string by the vibration applying means applying the vibration. The signal processing unit generates a vibration imparting signal based on the detection signal of the second detection unit in addition to the detection signal from the first detection unit, and can more accurately control the vibration applied to the sound cylinder. . In this way, the sound cylinder resonates with the vibration from the string and the vibration from the vibration applying means to generate a musical sound. Therefore,
The vibration transmitted to the sound cylinder can be controlled, and the amount of sound generated can be changed. In addition, even when it is electrically off, the sounding body resonates due to vibration from the strings,
Musical sounds can be generated in the same manner as a normal stringed instrument.
Further, since the sound is generated by resonating the sounding body without using a speaker or headphones, a tone close to that of an original acoustic stringed instrument can be played. In addition, vibration is applied to the sound column, which is a component of a normal acoustic stringed instrument, or to the sound cylinder of the sound column, thereby controlling the vibration of the sound cylinder. Is fixed or in contact with the sounding body, and is the same as a normal acoustic stringed instrument, so that in the state where the vibration applying means does not apply vibration, it is possible to play almost the same tone as a normal acoustic stringed instrument. .

According to a sixth aspect of the present invention, there is provided the stringed musical instrument according to the fifth aspect, wherein the vibration applying means applies the vibration to the soul post in a non-contact manner.

According to this configuration, when the vibration applying means does not apply vibration to the soul pillar, the vibration of the sounding body is applied even when the user performs and the vibration occurs in the sounding body. It is not affected by the means. Therefore, when the vibration applying means does not apply vibration, it is possible to play a tone closer to an acoustic stringed instrument.

According to a seventh aspect of the present invention, in the stringed instrument according to the sixth aspect, the soul pillar is made of a magnetic material, and the vibration applying means is arranged around the soul pillar in a non-contact manner. When a vibration applying signal is supplied from the signal processing means to the vibration applying means,
Vibration is imparted to the soul pillar by a magnetic action generated between the coil and the soul pillar.

According to this structure, when the vibration applying means does not apply vibration to the soul pillar, the vibration of the sounding body is applied even when the user performs a performance and the sounding body vibrates. It is not affected by the means. Therefore, when the vibration applying means does not apply vibration, it is possible to play a tone closer to an acoustic stringed instrument.

The stringed musical instrument according to claim 8 is the stringed musical instrument according to any one of claims 5 to 7, wherein the signal processing means has a vibration substantially in phase with the vibration detected by the second detection means. Generates a vibration imparting signal to be transmitted to the sounding body.

According to a ninth aspect of the present invention, in the stringed musical instrument according to any one of the fifth to seventh aspects, the signal processing means has a phase substantially opposite to the vibration detected by the second detection means. It is characterized in that a vibration imparting signal is generated such that the vibration is transmitted to the sound cylinder.

A stringed musical instrument according to a tenth aspect of the present invention is the stringed musical instrument according to any one of the first, second, fifth, sixth and seventh aspects, further comprising setting means for setting an operation mode instructed by a user. The signal processing means generates the vibration imparting signal in accordance with the operation mode set by the setting means.

According to this configuration, the signal processing means generates the vibration applying signal in accordance with the operation mode set by the user. That is, vibration according to the set operation mode can be applied to the front plate and the back plate, and the sound generation amount and the like can be controlled. For example, in the case where an operation mode for reducing the sound generation amount is set, as described above, a vibration imparting signal is generated such that the vibration having the opposite phase to the vibration generated in the sounding body is applied to the sounding body. I just need. Further, when an operation mode for increasing the sound generation amount is set, a vibration imparting signal may be generated such that vibration having the same phase as the vibration generated in the sounding body is applied to the sounding body. Also, if the mode is set to sound at a volume almost the same as that of a normal acoustic stringed instrument, if a musical tone is generated by resonance of the sounding body due to only string vibration due to stringing without generating a vibration imparting signal. Good.

[0023]

Embodiments of the present invention will be described below with reference to the drawings. A. First, FIG. 1 shows a violin according to an embodiment of the present invention. As shown in the figure, this violin has a sound body 11 which is a resonator like a normal violin, and a neck 12 extending from the sound body 11, and a bobbin 13 provided on the neck 12 The four strings 15 are supported by a tension plate 14 and a stopper plate 14 provided on the sound cylinder 11. A fingerboard 16 is disposed on the upper surface (front side of the paper) of the sound cylinder 11 and the neck 12 substantially in parallel with the string 15. A piece 18 is sandwiched between the sound cylinder 11 and the string 15, so that the vibration of the string 15 is transmitted to the sound cylinder 11 via the piece 18. Each of these components has the same function as a normal acoustic violin.

FIG. 2 is a view taken along the line II-II of FIG. As shown in FIG.
0, a back plate 21, and a horizontal plate 22. A cylindrical pillar 23 is arranged between the front plate 20 and the back plate 21. The soul post 23 transmits the vibration of the string 15 transmitted via the piece 18 from the front plate 20 to the back plate 21. In the present embodiment, a magnet is used as the soul post 23, and the upper end is fixed to the front plate 20, and the lower end is in contact with the back plate 21 but is not fixed. Further, a cylindrical bobbin 35 is arranged so as to cover the periphery of the soul pillar 23 without contact with the soul pillar 23. A conductor 35 a is wound around the bobbin 35. These conductors 35a are connected to coils (vibration applying means) 24
, And both ends of the conducting wire 35a constituting the coil 24 are connected to an electric circuit described later. The lower end of the bobbin 35 is fixed to the back plate 21. With this configuration, when a vibration imparting signal described later is supplied to the coil 24, the magnetic pole 23 vibrates due to a magnetic effect generated between the coil 24 and the soul pole 23. In other words, soul pillar 2
3 does not mean that the vibration is applied in a state of contact with the coil 24 serving as the vibration applying means. Therefore, when power is not supplied to the coil 24, the soul pillar 23 is similar to the soul pillar of a normal acoustic violin. Will play a role.

Next, the electrical configuration of the violin will be described with reference to FIG. As shown in the figure, the violin has a pickup (first detection means) 30 and an error pickup (second detection means) 36. Pickup 30 and error pickup 36
Generates a vibration signal which is an electric signal similar to the vibration waveform. The pickup 30 detects a state of vibration generated from the string 15 due to a stringing operation of a player or the like, and generates a vibration signal corresponding to the detected vibration state. The error pickup 36 is attached to the back plate 21, and detects a vibration generated in the sound drum 11 due to the vibration applied to the soul pillar 23 and the bowing of the string 15 described later.

FIG. 4 shows an example in which the pickup 30 is incorporated into a violin. As shown in the drawing, in this installation example, the pickup 30 is the piece 1 of the sound cylinder 11.
8 at the bottom. If the pickup 30 is arranged at such a position, the vibration generated by the string 15 due to the string rubbing operation or the like is transmitted to the pickup 30 via the piece 18, and a vibration signal corresponding to this vibration is generated. In addition,
The position at which the pickup 30 is incorporated into the violin is not limited to this, and may be arranged at a position in contact with the string 15 to generate a vibration signal from the vibration of the string 15, or the fingerboard 16, the sound cylinder 11, or the like. May be disposed at a position where the vibration is transmitted from the strings 15 to the vibration signal transmitted thereto.

Returning to FIG. 3, as described above, the pickup 3
The vibration signal generated by 0 is output to the head amplifier 31 and amplified. The vibration signal amplified by the head amplifier 31 is output to a signal processing unit (signal processing means) 32. In addition, the vibration signal generated by the error pickup 36 is amplified by the head amplifier 37 and input to the signal processing unit 32. The signal processing unit 32 is, for example, a DSP
(Digital Signal Processor) or an adaptive DSP.
According to the operation mode set by the above, a vibration imparting signal is generated based on the vibration signals input from the head amplifier 31 and the head amplifier 37. The vibration imparting signal generated by the signal processing unit 32
After being amplified to 4, it is supplied to a coil 24 wound around a soul pole 23 in a non-contact manner. Vibration giving signal is coil 2
When supplied to the coil 4, the magnetic pole 23 vibrates relative to the bobbin 35 around which the coil 24 is wound by a magnetic action between the pillar 23 and the coil 24. That is, the signal processing unit 32
Generates a vibration giving signal that determines what kind of vibration is given to the soul pillar 23 in accordance with the operation mode set by the user via the switch section 33. In the present embodiment, the switch unit 33 can be connected to three points A, B, and C. That is, the switch unit 33 can set three operation modes.

B. Operation of Embodiment Next, the operation of the violin having the above configuration will be described in three operation modes that can be set by the switch unit 33. In this violin, a volume increase mode in which the volume is greater than the volume produced by a normal violin, that is, the volume produced by resonance only by the vibration transmitted from the string 15, and a reference for producing a sound at a volume similar to that of a normal violin It has a mode and a sound reduction mode in which sound is generated at a volume lower than that of a normal violin.

B-1. First, a sound increasing mode in which a sound is generated at a volume larger than the sounding amount of a normal violin will be described. In setting this mode, the user connects the switch unit 33 to the point A. In the sound increase mode, when the player performs a string-stripping operation, the vibration of the string 15 is transmitted through the piece 18 to the sound cylinder 11.
Is transmitted to At the same time, the vibration of the string 15 is transmitted to the pickup 30 via the piece 18. Thereby, the pickup 30 generates a vibration signal corresponding to the vibration state and outputs the vibration signal to the head amplifier 31. Then, the vibration signal is amplified by the head amplifier 31 and then output to the signal processing unit 32.

In the sound increasing mode, the signal processing unit 32 operates in real time so that the vibration of the sounding body 11 is maximized by the vibration signal input from the head amplifier 31 and the vibration signal input by reference from the head amplifier 37. In addition, it adaptively operates to generate a vibration giving signal. When the vibration imparting signal is amplified by the amplifier 34 and supplied to the coil 24, the vibration of the string 15 causes a vibration of the same phase as the vibration generated in the sounding body 11 in the soul post 23,
This vibration is transmitted to the sound cylinder 11. That is, the vibration applied to the soul post 23 from the coil 24 is added to the vibration generated in the sound cylinder 11 by the vibration of the string 15, and the vibration applied to the sound cylinder 11 is amplified. Therefore, compared to a normal violin, the volume emitted by the resonance of the sound cylinder 11 increases. Note that the signal processing unit 32
Gives an appropriate DC signal, and as shown in FIG.
3 may be vibrated in a state where the lower end is separated from the back plate 21.

B-2. Reference Mode Next, a case where the switch unit 33 is connected to the point B by the player and the reference mode is set will be described. In the reference mode, when the player performs the stringing operation, the vibration of the string 15 is transmitted to the sound cylinder 11 via the piece 18, whereby the sound cylinder 11 resonates and emits a musical sound.
On the other hand, in the reference mode, since the violin is in an electrically off state, no vibration applying signal is supplied to the coil 24, and the lower end of the soul post 23 comes into contact with the back plate 21, ie, Both ends of the soul post 23 are in contact with the front and back plates, respectively, as in a normal acoustic violin. Therefore, in the reference mode, the sound is produced at a volume similar to that of a normal acoustic violin. That is, it functions as a normal acoustic violin. When used in this reference mode, the lower end, which is the non-fixed end of the soul post 23, may be temporarily fixed to the back plate 21 with a thumbscrew or the like.

B-3. Next, a case where the switch 33 is connected to the point C by the player and the sound reduction mode is set will be described. In the sound reduction mode, when the player performs the stringing operation, the string 15
Is transmitted to the sound cylinder 11 via the piece 18. At the same time, the vibration of the string 15 is
0 is transmitted. As a result, the pickup 30 generates a vibration signal corresponding to the vibration, and the head amplifier 31
Output to The vibration signal is output to the head amplifier 3
After being amplified by 1, the signal is output to the signal processing unit 32.

In the sound reduction mode, the signal processing section 32 outputs the vibration signal input to the head amplifier 31 and the head amplifier 37
In response to the vibration signal inputted as reference, the adaptive operation is performed in real time and adaptively so as to minimize the vibration of the sounding body 11, thereby generating a vibration giving signal. When the vibration applying signal is amplified by the amplifier 34 and supplied to the coil 24,
Due to the vibration of the string 15, a vibration substantially opposite in phase to the vibration generated in the sound cylinder 11 is generated in the soul post 23, and this vibration is transmitted to the sound cylinder 11. That is, the vibration generated in the sound cylinder 11 by the vibration of the string 15
Is attenuated by the vibration applied to Therefore, the volume emitted by the resonance of the sound cylinder 11 is smaller than that of a normal violin. Note that the signal processing unit 3
2 may apply an appropriate DC signal and vibrate in a state where the lower end of the soul pillar 23 is separated from the back plate 21.

The violin according to the present embodiment can generate a sound in the three operation modes of the above-described sound increase mode, reference mode, and sound reduction mode. Therefore, the user can select any one of the three modes according to the usage status of the violin. For example, when performing in a large venue or the like, the sound volume emitted from the violin is increased by setting the mode to the sound increase mode. Also, setting the sound reduction mode reduces the volume of sound emitted from the violin, which is suitable for practice at home or the like.

Of course, if the mode is set to the reference mode, no vibration occurs due to the magnetic action between the soul pillar 23 and the coil 24, and the soul pillar 23 functions as a soul pillar similar to a normal acoustic violin. Will fulfill. Therefore, when set to the reference mode, it functions as a musical instrument whose volume, tone, playability, design, etc. are almost the same as those of a normal violin.

In addition, with this violin, even when increasing or decreasing the sound, the violin does not go through a process different from the sounding process of an acoustic violin such as a speaker or headphones.
Since the vibration applied to the sound cylinder 11 is controlled and the sound is produced by resonance of the sound cylinder 11 as in the case of the original violin,
The sound quality is close to the original acoustic violin.

C. Modifications The present invention is not limited to the above-described embodiment, and various modifications as described below are possible.

(1) In the above-described embodiment, the error pickup 36 is attached to the back plate 21. However, the error pickup 36 may be attached to the front plate 20. In addition, although only the upper end of the soul post 23 is fixed to the front plate 20, only the lower end of the soul post 23 may be fixed to the back plate 21.

(2) In the above-described embodiment, each of the sound increase mode and the sound decrease mode is one. However, the sound decrease mode or the sound increase mode may be set in a plurality of steps. More specifically, the amplitude of the vibration applied to the soul pillar 23 from the coil 24 may be prepared in a plurality of stages, and a vibration imparting signal for applying an amplitude suitable for the set volume to the soul pillar 23 may be generated. By doing so, the degree of freedom in volume adjustment is increased, and it is possible to set a mode that is more suitable for the use situation of the player.

(3) Further, in the above-described embodiment, the vibration is applied to the soul pillar 23 by the magnetic action generated between the coil 24 and the soul pillar 23. However, the invention is not limited to this. Any device that applies vibration to the soul pole 23 by supplying the application signal may be used, such as a vibrator. In this case, the sound pillar 23 and the vibrator are in contact with each other in the sound increase mode and the sound reduction mode, and the sound pillar 23 is separated from the vibrator in the reference mode.
Is not affected by vibration imparting means such as a vibrator, and the tone can be made closer to an acoustic violin. In this case, the vibrator may have a support member attached to the horizontal plate 22 and be supported by the support member.

(4) In the above-described embodiment, the upper end of the soul post 23 is fixed to the top plate 20. However, as shown in FIG. It may be fixed to the back plate 21 using an adhesive 60 or the like. In such a configuration, when a vibration application signal is supplied to the coil 24, a force is applied to the soul pillar 23 by a magnetic action between the soul pillar 23 and the coil 24. The soul post 23 is elastically deformed by this force. Such a periodic change in the deformation amount of the soul pillar 23 (that is, vibration)
Thereby, vibration is applied to the front plate 20 and the back plate 21. At this time, the adhesive 60 is also deformed by the force applied to the soul pillar 23, and applies vibration to the front plate 20 and the back plate 21 together with the deformation of the soul pillar 23.

(5) In the above-described embodiment, the pickup is provided on either the front plate 20 or the back plate 21. However, as shown in FIG. A pickup 36 may be provided on both. As shown in FIG.
The bobbin 35 is attached to each of the 0 and the back plate 21, and the coil 24 is wound around each of the bobbins 35. According to this configuration, since the vibration state of both the front plate 20 and the back plate 21 can be detected and the vibration can be applied to each of the front plate 20 and the back plate 21, the vibration can be more accurately applied to the sound cylinder 11. Vibration can be controlled. In FIGS. 3, 5, 6 and 7 used in the description of the above embodiment, the pickup is disposed outside the front plate (sound board) and the back plate.
Of course, the same effects as those of the above-described embodiment can be obtained even if they are arranged inside the front plate or the back plate. In the case of using electromagnetic force in the form of using a magnet and a coil, at present, the coil is lighter than the magnet, so the magnet is used for the pillar, but the coil is wound around the pillar, and A configuration may be adopted in which a magnet is disposed, and vibration is applied to the soul pillar by an electromagnetic force generated between the two. Further, a coil may be wound around both the soul pillar and the bobbin, and vibration may be applied to the soul pillar by using an electromagnetic force generated therebetween.

(6) In the above embodiment, the signal processing unit 32 changes the processing characteristics according to the operation mode set by the switch unit 33. However, the signal processing unit 32 operates only in the above-described sound increase mode or sound reduction mode. The processing may be executed.

(7) Although the stringed musical instrument described in the above embodiment is a violin, other stringed and bowed musical instruments may be used in a box having a front plate and a back plate as described above. The present invention can be applied to any stringed musical instrument that generates a musical sound by resonating the sound cylinder. For example, in the case of a stringed musical instrument having a soul pillar such as a cello, a contrabass, a viola, etc., vibration may be applied to the soul pillar as described above.

(8) In the above-described embodiment, the bobbin 35 around which the coil 24 is wound is fixed to the back plate 21. However, as shown in FIG. The bobbin 35 may be fixed to the member 50. In this manner, vibration can be applied to the front plate 20 and the back plate 21 in a state where both ends of the pillar 23 are in contact with each other. That is, vibration transmission similar to that of a normal acoustic violin is performed.

(9) In a stringed musical instrument having no soul pillar such as a guitar, a vibration transmitting member is newly disposed between the front plate and the back plate, and vibration is transmitted to the vibration transmitting member instead of the soul pillar 23. The vibration of the sound cylinder may be controlled by giving the sound. By arranging the vibration transmitting member between the front plate and the back plate, that is, inside the sound box, the appearance of the stringed instrument is not impaired. Also, if a vibration transmitting member is attached to the inner surface side of the front plate and the inner surface of the back plate, and a vibration is applied to these vibration transmitting members in a non-contact manner by using a magnetic action or the like, it is normal, that is, the vibration is increased. When no sound or sound reduction is performed, components such as vibration imparting means for imparting vibration to the vibration transmitting member do not affect the vibration of the sounding body, and the tone when no sound reduction or sound increase is performed is applied to the acoustic musical instrument. Can be close. In addition, if a vibration transmitting member is attached to the inner surface side of the front plate and the back plate, and a vibration applying means such as a vibrator that contacts the vibration transmitting member only in the sound increasing mode and the sound reducing mode is provided, In the reference mode, the vibration imparting means does not affect the vibration of the sounding body, and the timbre can be close to that of an acoustic stringed instrument.

[0047]

As described above, according to the present invention,
The vibration transmitted to the sound cylinder can be controlled, and the amount of sound can be changed. In addition, even when it is electrically off, the sounding body resonates due to vibration from the strings,
Musical sounds can be generated in the same manner as a normal stringed instrument.
Further, since the sound is generated by the resonance of the sounding body, it is possible to play a tone close to the original acoustic stringed instrument.

[Brief description of the drawings]

FIG. 1 is a front view of a violin according to an embodiment of the present invention.

FIG. 2 is a view taken along line II-II in FIG.

FIG. 3 is a block diagram showing an electrical configuration of the violin.

FIG. 4 is a view showing an example of assembling a pickup which is a component of the violin.

FIG. 5 is a diagram showing a state where vibration is applied to a soul pillar in the violin.

FIG. 6 is a block diagram showing an electrical configuration of a modified example of the violin.

FIG. 7 is a block diagram showing an electric configuration of another modified example of the violin.

FIG. 8 is a side sectional view showing still another modified example of the violin.

[Explanation of symbols]

11 ... sound body, 12 ... neck, 13 ... thread, 14 ...
… Stop plate, 15… string, 16… fingerboard, 18… piece, 2
0: front board (sound board), 21: back board, 22: horizontal board, 2
3 ... soul pillar, 24 ... coil (vibration applying means), 30 ...
... Pickup (first detection means), 32... Signal processing section (signal processing means), 33... Switch section (setting means), 34... Head amplifier, 35.
... Error pickup (second detecting means), 37 ... Head amplifier, 60 ... Adhesive

Claims (10)

[Claims] 1. A box-shaped sound cylinder having a string, a front plate and a back plate arranged to face each other, resonating by vibration of the string, and being disposed between the front plate and the back plate, A vibration transmission member that transmits vibration to at least one of the front plate and the back plate; a first detection unit that detects a state of vibration generated from the string; and a vibration sensor that is generated on at least one of the front plate and the back plate. A second detection unit that detects vibration, a signal processing unit that generates a vibration imparting signal based on the detection signals detected by the first detection unit and the second detection unit, A string applying device for applying a vibration according to the generated vibration applying signal to the vibration transmitting member. 2. The stringed musical instrument according to claim 1, wherein the vibration applying means applies the vibration to the vibration transmitting member in a non-contact manner. 3. The apparatus according to claim 2, wherein the signal processing means generates a vibration imparting signal such that vibration having substantially the same phase as the vibration detected by the second detecting means is transmitted to the sounding body. 3. The stringed instrument according to 1 or 2. 4. The signal processing means according to claim 1, wherein said signal processing means generates a vibration imparting signal such that a vibration substantially opposite in phase to the vibration detected by said detecting means is transmitted to said sounding body. 2. A stringed instrument according to item 2. 5. A box-shaped sound cylinder that has a string, a front plate and a back plate that are arranged to face each other, and resonates by vibration of the string, and is disposed between the front plate and the back plate, A pillar for transmitting and receiving vibration between at least one of the front plate and the back plate; first detection means for detecting a state of vibration generated from the string; and at least one of the front plate and the back plate A second detection unit for detecting vibrations generated in the signal processing unit; a signal processing unit for generating a vibration imparting signal based on the detection signals detected by the first detection unit and the second detection unit; A vibrating means for applying vibration to the soul pillar in accordance with the vibration applying signal generated by the processing means. 6. The stringed musical instrument according to claim 5, wherein the vibration applying means applies vibration to the soul pillar in a non-contact manner. 7. The pillow is made of a magnetic material, and the vibration applying means has a coil arranged around the soul post in a non-contact manner. The stringed musical instrument according to claim 6, wherein when a vibration imparting signal is supplied, vibration is applied to the soul pillar by a magnetic action generated between the coil and the soul pillar. 8. The apparatus according to claim 1, wherein said signal processing means generates a vibration imparting signal such that vibration having substantially the same phase as the vibration detected by said second detection means is transmitted to said sound body. A stringed instrument according to any one of 5 to 7. 9. The signal processing means according to claim 5, wherein said signal processing means generates a vibration imparting signal such that a vibration substantially opposite in phase to the vibration detected by said detecting means is transmitted to said sounding body. 7. A stringed instrument according to any one of the above items 7. 10. The apparatus further comprising setting means for setting an operation mode instructed by a user, wherein the signal hand processing means generates a vibration imparting signal according to the operation mode set by the setting means. The stringed musical instrument according to any one of claims 1, 2, 5, 6, and 7.