JP2019028443A - Stringed musical instrument for generating sound from two sound boards on opposite side of musical instrument and manufacturing method - Google Patents

Abstract

To provide stringed musical instruments that generate sound from the two sound boards on the opposite side of the musical instrument.SOLUTION: A dual bridge and saddle assembly 16 includes a first bridge 20 extending between a front sound board 12 and a rear sound board 14 and attached to the front sound board 12 and a second bridge 22 attached to the rear sound board 14, posts 23 and 24 connecting the first bridge 20 and the second bridge 22 to each other, a saddle assembly 30 insertable into a slot 34 of the first bridge 20, and a saddle assembly 31 that can be inserted into the second bridge 22.SELECTED DRAWING: Figure 8B

Description

  The present invention uses a single set of strings that connect a bridge on each sound board from two sound boards that have a hollow or semi-hollow body and are spaced apart across the instrument, From string instruments such as guitars, violins, banjos, and the like, where the sound is generated and controlled through the inside of the instrument's hollow, and two sound boards that have a hollow or semi-hollow body and are placed away from the instrument, It relates to a method of constructing a stringed instrument in which sound is generated and controlled through the interior of the instrument's hollow using a single set of strings that interconnect the bridges on each sound board.

In traditional stringed instruments with a hollow or semi-hollow body, the musical sound is achieved by stroking and striking the strings on the bridge and saddle attached to the sound board corresponding to the structural front of the instrument. Is generated.
Sound generated by string vibration and transmitted from the bridge assembly mounted on the sound board to the entire body is generally located on the structural front sound board and is generally It is emitted from the sound hole of the musical instrument located below.

In an acoustic guitar, the hollow interior of the body forms an acoustic resonance enclosure that enhances and amplifies the sound produced by the sound board. Musical instrument sound boards are conventionally considered to be the top or front of a musical instrument.
The back or back of the guitar is thought to have little or no effect on the overall sound produced by the instrument, so little attention has been paid to the wood used to make the guitar's rear board. Absent.
The front and rear boards are connected to the body along the sides of the instrument, completely closing the body surrounding the hollow interior.

As explained above, the front board is recognized as an acoustic guitar sound board and is composed of expensive tonewood such as spruce and red cedar, while the rear board is generally inexpensive. Consists of wood and other materials.
Conventional acoustic guitar front boards and rear boards usually have ribs inside each board so as to face the inside of the guitar, thereby increasing the structural strength of each board. However, in many cases, in the conventional acoustic guitar, the support between the front board and the rear board does not exist except for the side surface connecting the front board and the rear board.

  According to the present invention, the sound board including both the front sound board and the rear sound board of the guitar is obtained by connecting the front sound board and the rear sound board to each other through the inside of the guitar using a pair of strings. It has been discovered that they can be used at the same time to produce sound independently of each other, thereby improving the sound produced by stringed instruments.

  In the present invention, this is achieved by using a dual bridge and saddle assembly. The dual bridge and saddle assembly includes a first saddle and bridge attached to the front sound board of the instrument, and a second saddle and bridge attached to the rear sound board, the first bridge and The second bridges are connected to each other through the inside of the guitar hollow by a pair of strings. The dual bridge and saddle assembly preferably further comprises struts. The strut is connected to the first bridge and the second bridge inside the guitar, and additionally supports structurally between the front sound board and the rear sound board, and supports the weak part by the presence of the dual bridge. .

  By vibrating a pair of common strings extending between the two soundboards, sound is transmitted from both the front and rear soundboards to the entire interior of the instrument, creating a multi-layered acoustic sound. The The range of intensity and frequency of the generated sound is wider than that of other acoustic guitars in which the guitar string is connected only to the front board. Furthermore, by coupling each sound board to a separate (pre-stage) amplifier and / or amplifier, it is possible to independently control the sound generated from each sound board, further improving the sound. .

  In the present invention, although not essential, at least one of the sound boards, preferably the front sound board, in addition to the conventional sound hole, at least one that emits sound from the guitar independently of the sound hole. It is preferable to have one sound port. The sound port can be located around the sound hole. In addition, the sound port has a hollow member of the desired shape, which can be any tube, preferably a tube adapted for insertion into an opening formed on the front sound board. Preferably there is.

  The hollow member extends from the front sound board into the hollow with a length equal to 5% to 95% of the distance between the front sound board and the rear sound board, and is preferably of the desired size and dimension, preferably An opening around the geometric shape is formed to pass through the front sound board. By changing the extension length of the sound port to the inside of a guitar or the like, that is, by determining a desired length range based on the target sound, from among various different lengths within this desired range By selecting the desired length, the sound port can be tuned to a desired frequency range that is proportional to the resonant frequency of the guitar. For example, unlike the frequency spectrum of the sound emitted from the sound hole, the sound from the sound port can have a high frequency and / or a low frequency corresponding to the treble or bass sound range. Thereby, the dynamic range of the frequency generated by the musical instrument can be widened.

  And especially when a sound port is added to the instrument, one or more panels connecting the front sound board and the rear sound board are provided inside the instrument body to collect the sound into the sound port. It is preferable to make it. The panel is disposed so as to be positioned between each sound port and the sound hole, and is usually provided in the upper bout of the guitar, but is not limited thereto. The panel preferably extends to the neck of the guitar, but may be connected to other panels near the neck of the guitar. In this arrangement, sound is collected toward each sound port by the panel, so that sound is emitted from the sound port in addition to the sound coming out of the sound hole. Also, because the panel is connected to the front and rear sound boards, the panel essentially provides structural support between the front and rear plates of the guitar, which allows the panel to be dual bridge and saddle. Together with the support of the assembly, it serves as a replacement for the traditional standard and ribs attached to the front and / or rear sound boards.

  The stringed instrument of the present invention includes a first sound board that is the front surface of the stringed instrument, a second sound board that is the back surface of the stringed instrument, and the inside of a common hole or semi-hole that extends between the first sound board and the second sound board. A dual bridge and saddle assembly extending between the first sound board and the second sound board, wherein the dual bridge and saddle assembly is on the first sound board. A first bridge and saddle mounted, a second bridge and saddle mounted on a second sound board, a first bridge and a second bridge of a dual bridge and saddle assembly through a common interior of the instrument; A pair of strings that interconnect each other.

  The present invention further broadly includes a body having a hollow or semi-hollow interior, front and rear sound boards disposed on opposite sides of the interior, a set of strings, and a first for a surface sound board. A method of manufacturing a stringed instrument having a bridge and saddle, and a dual bridge and saddle assembly having a first bridge and saddle for a sound board on the back surface, wherein the dual bridge and saddle assembly is mounted on the front sound board. Attaching a first bridge included in a three-dimensional object, attaching a second bridge included in the dual bridge and saddle assembly to the rear sound board, and generating sound from each of the sound boards. The first bridge and the second bridge through the internal body of the musical instrument It encompasses fabrication method of a string instrument having a step of tensioning the set of strings between. Preferably, the method further comprises using a strut to structurally support each between the front sound board and the rear sound board, and the first bridge of the dual bridge and saddle assembly and the Structurally connecting the second bridge.

Other advantages of the present invention will become apparent from the following detailed description of the invention when read in conjunction with the accompanying drawings.
1 is a structural front view of an acoustic guitar made using the dual bridge and saddle assembly of the present invention. FIG. FIG. 2 is a structural rear view of the guitar shown in FIG. 1. It is a structural left view of the guitar of this invention shown in FIG. It is a structural right view of the guitar shown in FIG. FIG. 2 is an end view of the structural headstock of the guitar of FIG. 1 as viewed from the front end of the headstock. FIG. 2 is an end view of the structural bottom end of the guitar of FIG. 1 viewed from a lower bout corresponding to the lower end of the guitar. FIG. 2 is a structural perspective view of the guitar of the present invention shown in FIG. 1, schematically showing the arrangement of panels between the sound ports and the sound holes by dotted lines, and further using the dotted lines Shows two preamplifiers mounted on one side, the connection between the sound collector and each preamplifier mounted on each bridge of the dual bridge and saddle assembly, and each of the two preamplifiers and the amplifier Shows the external connection between. FIG. 8 is a structural cross-sectional view of the guitar of the present invention along line 8A-8A shown in FIG. FIG. 8 is a structural exploded view of the guitar shown in FIG. 7 viewed from the rear, showing a bisected guitar and dual bridge and saddle assemblies spaced from each half of the guitar, and each half of the guitar The sound ports on the opposite sides of the sound ports and the straight panels provided between the sound ports and the sound holes to collect and emit sound at each sound port are shown. FIG. 8B is another structural exploded view of the guitar of the present invention shown in FIG. 8B, showing another embodiment of the panel of the present invention shown in FIG. FIG. 9B is a structural exploded perspective view of the dual bridge and saddle assembly in FIGS. 8B and 9A with a pair of strings extending through the interior of the guitar between each bridge of the dual bridge and saddle assembly. And shows the arrangement and shape of the saddle on which the guitar strings are hung in each bridge of the dual bridge and saddle assembly of the present invention. FIG. 9B is a perspective view of a preferred form of one saddle assembly adapted for attachment to the dual bridge and saddle assembly of FIG. 9B, including a single piece including a saddle and a sound collection device embedded in the saddle. Fig. 2 shows a saddle assembly forming a unit. FIG. 11 is a diagram showing the integrated saddle and embedded sound collection device shown in FIG. 10, and a cross-sectional view taken along line 11-11 in FIG. 10. FIG. 8B is another exploded view of the dual bridge and saddle assembly of the present invention shown in FIG. FIG. 2 is a diagram showing a method of fixing a guitar string and a method of stretching a pair of guitar strings so as to connect the second bridge of the rear sound board and the first bridge of the front sound board to each other.

  All drawings relate to preferred forms of the invention and are not intended to limit the scope of the invention, but highlight selected versions of the invention.

  The musical instrument of the present invention is illustrated by an acoustic guitar 10 shown generally in FIGS. 1-9 that represents a preferred form of the musical instrument of the present invention. The acoustic guitar 10 includes a front sound board 12 shown in FIG. 1, a rear sound board 16 shown in FIG. 2, a dual bridge and saddle assembly 14 shown in detail in FIGS. 8A, 8B, 9A, 9B, 12; It has the body 11 containing. The dual bridge and saddle assembly 16 extends from the front sound board 12 to the rear sound board 14 of the guitar 10 through the hollow or semi-hollow interior 18 of the body 11. As shown in FIGS. 3, 4, and 6, the guitar 10 has a side surface 13 that completely connects the front sound board 12 and the rear sound board 14 to completely surround the body of the guitar 10.

  The dual bridge and saddle assembly 16 shown in FIG. 8A extends between the front sound board 12 and the rear sound board 14, the first bridge 20 attached to the front sound board 12, and the rear sound board 14. 9 and the saddle group which can be inserted in the slot 34 of the first bridge 20 as shown in FIG. 9B. A solid body 30 and a saddle assembly 31 that can be inserted into the slot 40 of the second bridge 22 are provided.

  A set of strings 33 of a custom or extended length is connected to the first bridge 20 mounted on the front sound board 12 from the headstock 19 at the tip of the guitar 10 along the neck 17 of the guitar 10. Extending from the first bridge 20 through the interior 18 of the hole in the body 11 of the guitar 10 to the second bridge 22 attached to the rear sound board 14. One end of each string in the set of guitar strings 33 is connected to the tuning knob 15 of the headstock 19, and the other end of each string in the set of strings 33 is fixed to the second bridge 22 with a peg. Thus, the pair of strings 33 connects the first bridge 20 and the second bridge 22 to each other through the interior 18 of the hole of the guitar 10. The set of strings 33 preferably extends beyond the saddle 48 inserted into the second bridge 22 starting from the position fixed by the peg to the second bridge 22 on the rear sound board 14 and the first bridge 20. The first bridge 20 is stretched over the saddle 44 inserted into the first bridge 20, and is stretched from the first bridge 20 to the tuning knob 15 along the neck 18 of the guitar 10. Details will be described later with reference to FIGS. 9B and 12.

  The struts 23, 24 of the dual bridge and saddle assembly 16 rear the sound board 12 on the upper side of the guitar 10 so that the front or rear sound board 12, 14 does not collapse due to excessive tension due to the tension of the guitar string 33. It functions to support and fix to the sound board 14. However, it should be understood that the use of struts 23, 24 is preferred but not critical to the present invention. The reason for this is that a separate support member independent of the pillars 23 and 24 of the dual bridge and saddle assembly 16 is used between the front sound board 12 and the rear sound board 14, so that the front sound board 12 and the rear sound are separated. This is because it is possible to obtain structural support for preventing the board 14 from collapsing relative to each other. As another support member, for example, as will be described later, panels 80 and 82 incorporated with use of the sound ports 70 and 72 can be used. The posts 23, 24 of the dual bridge and saddle assembly 16 are preferably arranged with an angle of inclination between the front sound board 12 and the rear sound board 14, as shown in FIG. The position of the sound board 12 is preferably slightly in front of the neck 17 of the guitar 10 with respect to the position of the rear sound board 14. With this arrangement, the tension of the pair of guitar strings 33 can be somewhat reduced when tuning the guitar 10. The struts 23, 24 can be made of a desired material, preferably wood, or a composition that replaces wood, and the shape can be any desired geometry including, for example, a rectangular parallelepiped shape, a cubic shape, and a cylindrical shape. It can be a geometric shape.

  The first bridge 20 of the dual bridge and saddle assembly 16 shown in FIGS. 1 and 9B has a slot 34 into which the saddle assembly 30 is inserted, and further includes a plurality of openings 35 for tensioning through the guitar string 33. Contains. The number of openings 35 corresponds to the number of guitar strings 33. For example, when the guitar 10 has six guitar strings 33, the first bridge 20 has six openings 35. The openings 35 are arranged in a direction across the set of guitar strings 33 on a substantially horizontal plane. The slot 34 of the first bridge 20 is preferably arranged at an acute angle with respect to the horizontal direction, as shown in FIG. 1, so that it is easy and / or possible to adjust a specific tone of the guitar. To. The shape and size of the first bridge 20 may match the shape and size of the second bridge 22 of the dual bridge and saddle assembly 16 except for the widthwise dimension.

  The first bridge 20 accommodates only one set of openings 35, whereas the second bridge 22 accommodates two sets of openings 38, 39 for the guitar string 33, so the second bridge 22 is As shown in FIG. 2, the width d is preferably wider than the width of the first bridge 20. A set of openings 39 in the second bridge 22 is used to securely fix one end of each guitar string 33 with a peg. The two sets of openings 38, 39 should be arranged parallel to each other on both sides of the slot 40 of the second bridge 22, for a total of twice the number of string openings 35 present in the first bridge 20. Should include an opening.

  As shown in FIGS. 9B and 12, the string 33 is fixed to the opening 39 of the second bridge 22 using a peg member 42. Each peg member 42 is inserted into the opening 39 by engaging one end of each string 33, whereby each peg member 42 engages each string 33 in the opening 39 to engage the string. The formed end is firmly fixed to one of the openings 39. Thereafter, as shown in FIGS. 9B and 12, the guitar string 33 passes through the corresponding opening 38 in the second bridge 22 from the end fixed to the opening 39 to move the saddle 48 of the saddle assembly 31. And is passed through the opening 35 of the first bridge 20 and is then hung on the saddle 44 of the saddle assembly 31 along the neck 17 of the guitar 10 at the tip 19 of the guitar 10. The tuning knob 15 is stretched.

  The saddle assembly 30 can be inserted into a slot 34 in the first bridge 20 of the dual bridge and saddle assembly 16 and, as shown in FIG. 9B, a saddle 44, a pickup 45, a wire cord 46, and an output jack 47. Including. The pickup 45 is a conventional element, for example, a sound collecting type such as a piezoelectric shield magnetic element provided in a wire coil. A jack 47 extending from the wire cord 46 is adapted to connect the pickup 45 to a preamplifier 60 attached to the side surface 13 of the guitar 10 as shown in FIG.

  Similarly, the saddle assembly 31 is insertable into a slot 40 in the second bridge 22 of the dual bridge and saddle assembly 16 and includes a saddle 48, a pickup 50, a wire cord 51, and an output jack 52. Yes. The output jack 52 extends from the wire cord 51 so that the pickup 50 can be connected to another preamplifier 52 that can be attached to the same side surface 13 of the guitar 10. As shown in FIG. 7, the two preamplifiers 60 and 62 may be connected to the amplifier 65 through output jacks 63 and 64 attached to the side surface 13 of the guitar 10. In this case, for example, the conventional Y connection 66 may be used for connection, or instead, each preamplifier 60, 62 is connected to a separate amplifier (in order to individually control the sound from each preamplifier. (Not shown) may be connected.

  Each saddle assembly 30 and 31 has saddles 44 and 48 and pickups 45 and 50, respectively. The saddles 44, 48 function to support a set of guitar strings 33 on the first and second bridges 20, 22 on the front and rear sound boards 12, 14, respectively. Each saddle 44, 48 may be a separate and independent part from each pickup 45, 50 in the saddle assembly 30, 31. Alternatively, one or both of the saddle assemblies 30, 31 may have a pickup integrated with the saddle assemblies 30, 31, thereby forming an integrated unit incorporating both the saddle and the pickup. . In the guitar of the present invention, the pickup 50 of the saddle assembly 31 is adapted for insertion into the opening 57 formed in the saddle 48, thereby forming an integrated unit. On the other hand, the pickup 45 of the saddle assembly 30 may be integrated with the saddle 44 to form one unit, but this need not be the case. Therefore, as shown in FIG. 9B, since the pickup device 45 of the saddle assembly 30 is an independent part, the pickup 45 is inserted into the slot 34 of the first bridge 20 alone, and then the saddle is placed from above the pickup 45. 44 must be inserted into the slot 34, whereas the saddle 48 coupled to the pickup 50 is inserted into the slot 40 of the second bridge 22 as an integrated unit.

  Regardless of whether one or both saddle assemblies 30, 31 are fabricated to form an integrated unit that includes both the saddle and the pickup, saddle components 44, 48 in each saddle assembly 30, 31 are considered. Should have a configuration including main body portions 53, 55 and a thin portion 54 extending outward from the main body portions 53, 55. The thin elongated portion 54 should have a substantially rectangular parallelepiped shape. This is because the cross-sections of the saddles 44 and 48 are each formed into a T shape, whereby the thin elongated portion 54 becomes the vertical side of the “T” shape, and the main body portions 53 and 55 become the horizontal side of the “T” shape. Become. Further, the narrow portion 54 extending from each saddle 44, 48 should have a width that matches the width of the respective slots 34, 40 of the first and second bridges 20, 22. And the thin part 54 should have a width | variety much thinner than the width | variety of the main-body parts 53 and 55 which are the starting points which the thin part 54 expand | extends. The body 53 of the saddle 44 may have a conical shape that extends to a slightly pointed apex 56 that is configured to engage the guitar string 33 on the front sound board 12. On the other hand, the saddle 48 may simply have a round semi-cylindrical configuration for engaging the guitar string 33 on the rear sound board 14.

  The guitar 10 of the present invention has at least one sound port, but preferably has two sound ports 70 and 72, as shown in FIGS. 1, 7, and 8A. It is preferably formed on both sides of the sound hole 13 of the guitar 10 on the front sound board 12. The sound hole 13 is located on the body 11 of the guitar 10, preferably on the front sound board 12. The sound hole 13 is preferably disposed under the guitar string 33 and symmetrically between the sound ports 70 and 72. Each sound port 70, 72 preferably includes members 77, 78 having a desired shape. One of the sound boards, preferably the front sound board, is formed with an opening made to accommodate the members 77, 78, and the shape of the members 77, 78 is adapted for insertion into the opening. It preferably has a hollow tube shape. Each member 77, 78 extends from the front sound board 12 of the guitar 10 to a position within the hollow interior 18 of the guitar, the length of which is the distance between the front sound board 12 and the rear sound board 14 of the guitar. It is desirable to be equal to a length of 5% to 95%. Also, the members 77, 78 should have openings 73, 74 that extend through each member 77, 78. The openings 73 and 74 have a desired shape and size, and preferably are circular, whereby the members 77 and 78 preferably have a parabolic or cylindrical shape. By varying one or both of the size of the openings 73, 74 and the extended length of each sound port 70, 72 within the interior 18 of the guitar 10, to a desired frequency range proportional to the resonant frequency of the guitar. The sound ports 70 and 72 can be individually tuned. The optimum condition is that the sound ports 70 and 72 have circular openings 73 and 74 having the same size as the members 77 and 78, and the members 77 and 78 extend from the front sound board 12 to the rear sound board 14. Having a length corresponding to a length of 20% to 80% of the distance, thereby improving the tuning characteristics of the majority of acoustic guitars. However, the lengths and size dimensions of the members 77 and 78 of the sound ports 70 and 72 need not be the same.

  Each sound port 70, 72 preferably has a geometrically linear panel 80, 82 connected between the front sound board 12 and the rear sound board 14. The panels 80 and 82 are disposed between the sound ports 70 and 72 and the sound hole 13, and extend from a position relatively close to the lower bow of the guitar 10 to a position near the neck 17 of the guitar 10, or In the vicinity of the neck 17 of the guitar 10, the straight panels 80 and 82 extend so as to cross each other. As a result, the sound can be collected and emitted to the sound ports 80 and 82. Although only two panels 80 and 82 are shown, an acoustic maze may be formed in the interior 18 of the guitar body 11 using additional panels.

  FIG. 9 shows an alternative to the use of linear panels 80, 82, where each panel connected between the front sound board 12 and the rear sound board 14 is "S" shaped. It has a meandering curved shape.

  As described above, since the panels 80 and 82 are connected between the front sound board 12 and the rear sound board 14, the panels 80 and 82 are not attached to the support 23 even when used together with the support 23. Even when not in use, it functions as a structural support to prevent the front and / or rear sound board from collapsing when the string tension is very high.

Claims (41)

A first sound board that is the front surface of the stringed instrument, a second sound board that is the back surface of the stringed instrument, and an interior of a common hollow or semi-hollow that extends between the first sound board and the second sound board; A body comprising a dual bridge and saddle assembly extending between the first sound board and the second sound board;
The dual bridge and saddle assembly passes through a first bridge and saddle attached to the first sound board, a second bridge and saddle attached to the second sound board, and a hollow interior of the instrument. A stringed instrument comprising a pair of strings interconnecting the first bridge and the second bridge of the dual bridge and saddle assembly.   The stringed musical instrument according to claim 1, wherein the dual bridge and saddle assembly further includes a strut that connects the first sound board to the second sound board through the hollow of the musical instrument.   The stringed instrument according to claim 2, wherein the support column has any shape selected from the group consisting of a cylindrical shape, a rectangular parallelepiped shape, and a cubic shape. The first bridge has a plurality of holes arranged in a direction across the set of strings and through which the set of strings is passed,
The second bridge has two sets of holes, and the total number of holes included in the two sets of holes is twice the number of holes present on the first bridge;
The stringed instrument according to claim 2, wherein the set of strings is fixed to one set of the two sets of holes in the second bridge. A plurality of peg members;
The plurality of peg members are adapted to be inserted into a set of the two sets of holes on the second bridge to secure each string in the set of strings to the second bridge. The stringed instrument according to claim 4. A first saddle assembly connected to the first bridge; and a second saddle assembly connected to the second bridge;
Each saddle assembly includes a saddle, a conventional sound pickup device, a wire cord and an output jack, and the wire cord and output jack are connected to the sound pickup device in the first and second saddle assemblies. The stringed instrument according to claim 1, wherein the stringed instrument is for connection to a separate preamplifier attached to the instrument.   The stringed instrument of claim 6, wherein the first and second bridges include slots that receive the saddles of the saddle assemblies.   Each saddle in both the first and second saddle assemblies has a main body portion and a thin portion extending outward from the main body portion, the thin portion substantially coinciding with the width of the slot in each bridge. 8. The stringed instrument according to claim 7, wherein the saddle is closely fitted in slots of the first and second bridges of the dual bridge and saddle assembly by having a substantially rectangular parallelepiped shape having a width.   The stringed instrument according to claim 8, wherein at least one of the first and second saddle assemblies is an integrated unit in which the sound collecting device is incorporated in the main body portion of the saddle assembly.   Each of the body portions of the first and second saddle assemblies has a conical shape having a vertex for engaging the set of strings and a curved surface for engaging the set of strings. The stringed instrument according to claim 9, having a semi-cylindrical shape having a geometric shape selected from the group consisting of: The musical instrument further includes a sound hole that emits sound, and at least one sound port that is separate from the sound hole,
The sound port includes a member that can be inserted into a hole formed in either the front sound board or the rear sound board,
The member has an opening of a predetermined dimension and extends to the interior of the instrument at a fixed distance equal to 5% to 95% of the distance between the front sound board and the rear sound board. The stringed instrument according to claim 1. The member in the sound port comprises a tube having a circular opening in the center,
The tube has a length that extends into the interior of the instrument at a constant distance equal to a length between 5% and 95% of the distance between the front soundboard and the rear soundboard. Item 12. The stringed instrument according to Item 11.   The stringed instrument according to claim 11, wherein the instrument further includes at least one sound port formed in a position near the sound hole on either the front sound board or the rear sound board. And at least one panel connected between the front sound board and the rear sound board;
The stringed instrument according to claim 13, wherein the panel extends between the sound port and the sound hole so as to collect sound in one direction toward the sound port. A plurality of panels,
Each panel is a straight panel connecting the front sound board and the rear sound board, from a position relatively close to the bridge on the front or rear sound board to a position near the neck of the instrument. The stringed instrument according to claim 14, wherein the stringed instrument is extended and located between each sound port and the sound hole.   The stringed instrument according to claim 15, wherein each panel is a curved panel connecting the front sound board to the rear sound board and has a meandering shape of “S” shape.   The stringed instrument according to claim 10, wherein each preamplifier is commonly connected to a single amplifier or connected to a separate amplifier. A hollow or semi-hollow interior, front and rear sound boards located on both sides of the hollow interior, a pair of strings, a first bridge attached to the front sound board, and attached to the rear sound board A stringed instrument comprising a body having a dual bridge and saddle assembly including a second bridge,
Attaching a first saddle assembly to a first bridge of the dual bridge and saddle assembly;
Attaching a second saddle assembly to a second bridge of the dual bridge and saddle assembly;
Between the first saddle assembly and the second saddle assembly, the first bridge and the second bridge are connected to each other through the interior of the instrument hollow to generate sound from each of the sound boards. And stringing the set of strings on the stringed instrument.   The post further comprises a strut interconnecting the first bridge and the second bridge of the dual bridge and saddle assembly through the interior of the hollow, the strut structurally connecting the front sound board to the rear sound board. The method of manufacturing a stringed instrument according to claim 18, wherein A sound hole and at least one sound port located in the vicinity of the sound hole;
The sound port is a method for producing a stringed instrument having a hollow member that penetrates the front sound board or the rear sound board,
The length of the hollow member is 5% to 95% of the distance between the front sound board and the rear sound board to tune the sound port to a desired frequency range proportional to the resonance frequency of the guitar. 19. The method of producing a stringed instrument according to claim 18, wherein the stringed instrument is selected to extend into the interior of the instrument at a constant distance in between.   The length of the hollow member is 20% to 80% of the distance between the front sound board and the rear sound board to tune the sound port to a desired frequency range proportional to the resonance frequency of the guitar. 21. A method for producing a stringed instrument according to claim 20, wherein the string instrument is selected to extend an equal and constant distance into the interior of the instrument.   The method of manufacturing a stringed instrument according to claim 21, further comprising a step of providing a panel for collecting and emitting sound in the sound port between the sound port and the sound hole.   The method of manufacturing a stringed instrument according to claim 22, wherein the panel is a straight panel or a curved panel having a meandering shape. A hollow or semi-hollow interior, a front surface and a rear surface, and having a sound board that is either the hollow structural front surface or the structural rear surface, or the front surface and Both of the rear surfaces have a body that functions as a sound board for the instrument,
The body has at least one tuned sound port extending into the instrument, and the instrument can have sound through the tuned sound port;
The tuned sound port has a hollow member inserted into a hole formed in the instrument,
The hollow member has a central opening having a predetermined shape, and has a length extending at a certain distance from a hole into which the tuned sound port is inserted. The musical instrument is a stringed musical instrument;
The tuned sound port is inserted into a hole formed in at least the structural front or rear sound board of the instrument,
25. The instrument of claim 24, wherein the hollow member extends into the interior of the instrument at a constant distance equal to a distance between 5% and 95% of the distance between the front and rear soundboards.   26. The instrument of claim 25, wherein the hole through which the tuned sound port extends is circular, and the hollow member has a cylindrical or conical shape.   The hollow member extends from the sound board to the interior of the instrument within a range of plus or minus 20% and a constant distance equal to the minimum distance between 1/4 and 1/2 of the diameter of the port opening. 27. The musical instrument of claim 26, having a length of   26. The instrument of claim 25, further comprising a plurality of panels that interconnect the front and rear sound boards.   29. The instrument of claim 28, wherein the panel has a flat or curved shape.   30. The musical instrument according to claim 29, wherein the panel has an S-shape and has a meandering shape or a sinusoidal curved shape. At least a tuned second sound port;
30. The instrument of claim 28, wherein each tuned sound port is symmetrically arranged to collect sound through at least one tuned sound port.   29. The instrument of claim 28, wherein, in addition to the tuned sound port, the panel has a second sound hole arranged symmetrically on both sides of the sound hole.   33. The instrument of claim 32, wherein the panel extends symmetrically from both sides of the instrument and from an end of the side. Further equipped with a dual bridge configuration,
The dual bridge configuration includes a first bridge attached to the front sound board, a second bridge attached to the rear board, and a sound structure strut that interconnects the first bridge and the second bridge. The musical instrument according to claim 28. With a hollow or semi-hollow body,
Front and rear surfaces,
At least one sound board to be either the front surface or the rear surface of the hollow body;
A musical instrument having a plurality of panels that interconnect the front surface and the rear surface of the hollow body. Further comprising at least one tuned sound port extending into the hollow body of the instrument, through which sound can be present;
The tuned sound port has a hollow member inserted into an opening formed in the body of the instrument,
36. The musical instrument according to claim 35, wherein the hollow member has a central opening having a predetermined shape and has a length extending a certain distance from a hole into which the tuned sound port is inserted. . The opening is circular;
The hollow member has a cylindrical shape and is within a range of plus or minus 20% from the opening with a certain minimum distance equal to between 1/4 and 1/2 of the diameter of the port opening. 37. The musical instrument of claim 36 that is elongated.   The musical instrument according to claim 37, wherein the panel has a curved shape and / or a flat shape.   The musical instrument according to claim 36, wherein the musical instrument is a stringed musical instrument. Further comprising a bridge saddle assembly attached to the front sound board of the instrument,
25. The instrument of claim 24, wherein the bridge saddle assembly includes at least one conventional transducer pickup that converts vibrations from the instrument string into electrical signals.   41. The instrument of claim 40, wherein at least one transducer pickup is embedded in a saddle of the bridge saddle assembly.

Images