JP7096856B2 - An instrument that produces sound from two soundboards on opposite sides of the instrument - Google Patents

Description

The present invention has a hollow or semi-hollow body, from two soundboards located opposite the instrument, using a single pair of strings connecting the bridges on each soundboard to each other. From a stringed instrument such as a guitar, violin, banjo, etc., where sound is generated and controlled through the inside of the hollow of the instrument, and two soundboards having a hollow or semi-hollow body and located opposite the instrument. It relates to a method of constructing a stringed instrument in which a sound is generated and controlled through the inside of the hollow of the instrument using a single set of strings connecting the bridges on each soundboard.

In traditional stringed instruments with hollow or semi-hollow bodies, the sound is produced by stroking or plucking the strings stretched over the bridge and saddle mounted on the soundboard corresponding to the structural front of the instrument. Is generated.
The sound produced by the vibration of the strings 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 of the strings. It is emitted from the sound hole of the instrument located below.

In an acoustic guitar, the inside of the hollow of the body forms an acoustic resonance enclosure that enhances and amplifies the sound generated by the sound board. The sound board of a musical instrument is traditionally considered to be the top or front of the instrument.
The back or back of the guitar is believed 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 rearboard of the guitar. do not have.
The front and rear boards are connected to the body along the sides of the instrument, completely closing the body that surrounds the interior of the hollow.

As explained above, the front board is perceived to be the sound board of an acoustic guitar and is made up of expensive tonewood such as spruce and red cedar, while the rear board is generally cheaper. It is composed of wood and other materials.
The front and rear boards of traditional acoustic guitars usually have ribs inside each board to face the inside of the guitar, increasing the structural strength of each board. However, in many cases, in a conventional acoustic guitar, the support between the front board and the rear board does not exist except for the side connecting the front board and the rear board.

According to the present invention, by using a pair of strings to connect the front sound board and the rear sound board to each other through the inside of the guitar, a sound board including both the front sound board and the rear sound board of the guitar can be obtained. It was discovered that when used simultaneously, each produces an independent sound, which makes it possible to improve the sound produced by a stringed instrument.

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 soundboard of the instrument and a second saddle and bridge attached to the rear soundboard, with said first bridge. The second bridge is interconnected by a pair of strings through the interior of the hollow of the guitar. Dual bridge and saddle assemblies are also preferably equipped with stanchions. The stanchions are connected to the first and second bridges inside the guitar, additionally structurally supporting between the front and rear soundboards, and the presence of dual bridges to support the weaker parts. ..

By vibrating a set of common strings that extend between the two sound boards, sound is transmitted from both the front and rear sound boards of the instrument throughout the interior of the instrument, producing a multi-layered acoustic sound. To. The intensity and frequency range of the produced sound is wider than other acoustic guitars where the guitar strings are connected only to the front board. Furthermore, by coupling each sound board to a separate (pre-stage) amplifier and / or amplifier, the sound generated from each sound board can be controlled independently and individually, further improving the sound. ..

Although not required in the present invention, at least one of the sound boards, preferably the front sound board, emits sound from the guitar independently of the sound hole, in addition to the conventional 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, the shape of which is a tube suitable for insertion into any sound board, preferably an opening formed on the front sound board. It is preferable to have.

The hollow member extends from the front soundboard into the hollow at a length equal to 5% to 95% of the distance between the front soundboard and the rear soundboard, and further extends to the desired size dimension, preferably. A geometrically rounded opening is formed to pass through the front sound board. By varying the extension length of the sound port into the interior of a guitar or the like, i.e., a desired length range is determined based on the target sound, and among various different lengths within this desired range. By selecting the desired length, the sound port can be tuned to a desired frequency range proportional to the resonant frequency of the guitar. For example, unlike the frequency spectrum of sound emitted from a sound hole, the sound from a sound port can have a high frequency and / or a low frequency corresponding to the sound range of a treble or bass. This makes it possible to widen the dynamic range of the frequencies generated by the musical instrument.

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 should be provided inside the body of the instrument to collect the sound to the sound port. Is preferable. The panel is located between each sound port and the sound hole and is usually but not limited to the upper bout of the guitar. The panel preferably extends to the neck of the guitar, but may be interconnected with other panels near the neck of the guitar. In this arrangement, the panel collects sound towards each sound port, 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 soundboards, the panel essentially provides structural support between the front and rear boards of the guitar, which allows the panel to have dual bridges and saddles. Along with the support of the assembly stanchions, it acts as a replacement for the ribs on traditional standard and front and / or rear soundboards.

The first form of the musical instrument of the present invention is
With a hollow or semi-hollow body,
Front and rear surfaces and
With at least one sound board that is either the front surface or the rear surface of the hollow body.
It has a plurality of panels that interconnect the front surface and the rear surface of the hollow body.
Other forms of the instrument further have at least one tuned sound port extending into the hollow body of the instrument in the instrument of said form, 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.
The hollow member has a central opening of a predetermined shape and has a length extending a certain distance from the hole into which the tuned sound port is inserted.
The other form of the instrument is that in the form of the instrument, the opening is circular and the opening is circular.
The hollow member has a cylindrical shape and is within a range of plus or minus 20% from the opening at a constant minimum distance equal to between 1/4 and 1/2 of the diameter of the soundport opening. It is growing.
In other forms of the instrument, in the form of the instrument, the panel has a curved shape and / or a flat shape.
The other form of musical instrument is the musical instrument of the above form, wherein the musical instrument is a stringed instrument.
The invention of another form is in the musical instrument of the said form.
Further equipped with a bridge saddle assembly attached to the sound board on the front of the instrument
The bridge saddle assembly includes at least one conventional transducer pickup that converts vibrations from the strings of the instrument into electrical signals.
In other forms of the instrument, at least one transducer pickup is embedded in the saddle of the bridge saddle assembly.

Other forms of stringed instruments
A first sound board on the front of the stringed instrument, a second sound board on the back of the stringed instrument, and the inside of a common hollow or semi-hollow extending 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 the first bridge and saddle attached to the first soundboard, the second bridge and saddle attached to the second soundboard, and the inside of the hollow of the instrument. It has the dual bridge and a set of strings connecting the first bridge and the second bridge of the saddle assembly to each other.
Other forms of stringed instruments include, in said form of stringed instrument, the dual bridge and saddle assembly further having struts connecting the first soundboard to the second soundboard through the interior of the instrument's hollow. ..
The other form of the stringed instrument is that in the stringed instrument of the above form, the strut has any shape selected from the group consisting of a cylindrical shape, a rectangular parallelepiped shape, and a cubic shape.
Other forms of stringed instruments include, in said form of stringed instrument, the first bridge having a plurality of holes arranged in a direction across the set of strings through which the set of strings passes.
The second bridge has two sets of holes, and the total number of holes contained in the two sets of holes is twice the number of holes existing on the first bridge.
The set of strings is fixed to one of the two sets of holes in the second bridge.
Other forms of stringed instruments further include a plurality of peg members in said form of stringed instrument.
The plurality of peg members are adapted to be inserted into one of the two sets of holes on the second bridge in order to secure each string in the set of strings to the second bridge. Has been done.
The other form of stringed instrument further comprises, in the stringed instrument of said form, a first saddle assembly connected to the first bridge and a second saddle assembly connected to the second bridge.
Each saddle assembly comprises a saddle, a conventional sound collecting device, and a wire cord and an output jack, wherein the wire cord and the output jack refer to the sound collecting device in the first and second saddle assemblies. It is for connecting to a separate preamplifier attached to the instrument.
For other forms of stringed instruments, in said form of stringed instrument, the first and second bridges include a slot for receiving the saddle of each saddle assembly.
In other forms of stringed instruments, in the stringed instrument of said form, each saddle in both the first and second saddle assemblies has a body portion and a thin portion extending outward from the body portion, said thin portion. However, by having a substantially rectangular parallelepiped shape having a width substantially matching the width of the slot in each bridge, the saddle is densely placed in the slots of the first and second bridges of the dual bridge and the saddle assembly. It is fitted.
The other form of the stringed instrument is an integrated unit in which the sound collecting device is incorporated in the main body of the saddle assembly in at least one of the first and second saddle assemblies in the stringed instrument of the above form. ..
Other forms of string instruments include, in said form, a conical shape in which the body of each of the first and second saddle assemblies has vertices for engaging the set of strings. It has a semi-cylindrical shape with a curved surface that engages a set of strings, and a geometric shape selected from the group consisting of.
The other form of stringed instrument, in said form of stringed instrument, further comprises a sound hole that emits sound and at least one sound port that is separate from the sound hole.
The sound port comprises 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 predetermined dimensions and has a length extending into the interior of the instrument at a fixed distance equal to 5% to 95% of the distance between the front soundboard and the rear soundboard. Have.
Other forms of stringed instruments include, in said form of stringed instrument, said member within said sound port consisting of a tube having a circular opening in the center.
The tube has a length extending into the interior of the instrument at a constant distance equal to the length between 5% and 95% of the distance between the front sound board and the rear sound board.
Other forms of stringed instruments include, in said form of stringed instrument, said instrument further having at least one sound port formed on either the front sound board or the rear sound board near the sound hole. Have.
The other form of stringed instrument further comprises at least one panel connected between the front sound board and the rear sound board in said form of stringed instrument.
The panel extends extending between the sound port and the sound hole so that the sound is collected in one direction toward the sound port.
Other forms of stringed instruments further include a plurality of panels in the above-mentioned form of stringed instrument.
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. It extends and is located between each sound port and the sound hole.
The other form of stringed instrument is, in the stringed instrument of the above form, each panel is a curved panel connecting the front sound board to the rear sound board, and has an "S" -shaped meandering shape.
For other forms of stringed instruments, in said form of stringed instrument, each preamplifier is commonly connected to a single amplifier or connected to a separate amplifier.
Other forms of stringed instruments include the interior of a hollow or semi-hollow, front and rear soundboards located on either side of the interior of the hollow, a pair of strings, and a first attached to the front soundboard. A method of making a stringed instrument comprising a body comprising a bridge and a dual bridge and saddle assembly including a second bridge attached to the rear sound board.
The process of attaching the first saddle assembly to the first bridge of the dual bridge and saddle assembly,
The process of attaching the second saddle assembly to the dual bridge and the second bridge of the saddle assembly,
Between the first saddle assembly and the second saddle assembly so that the first bridge and the second bridge are interconnected through the inside of the hollow of the musical instrument to generate sound from each of the sound boards. It has a step of stretching the set of strings to the stringed instrument.
Another method of manufacturing a stringed instrument is a strut that interconnects the first bridge and the second bridge of the dual bridge and saddle assembly through the interior of the hollow in the method of manufacturing another form of stringed instrument. Further, the support column is for structurally supporting the front sound board to the rear sound board.
A method of making a stringed instrument of another form has a sound hole and at least one sound port located in the vicinity of the sound hole in the method of making a stringed instrument of another form.
The sound port is a method for producing a stringed instrument having a hollow member penetrating 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 soundboard and the rear soundboard in order to tune the soundport to a desired frequency range proportional to the resonant frequency of the guitar. It is selected to extend into said interior of the instrument at equal constant distances in between.
The method of manufacturing another form of stringed instrument is the method of manufacturing another form of stringed instrument, wherein the length of the hollow member is said to tune the sound port to a desired frequency range proportional to the resonance frequency of the guitar. A constant distance equal to 20% to 80% of the distance between the front sound board and the rear sound board is selected to extend into the interior of the instrument.
The method for producing another form of stringed instrument further includes, in the method for producing another form of stringed instrument, a step of providing a panel for collecting and emitting sound in the sound port between the sound port and the sound hole. ..
In the method of manufacturing a stringed instrument of another form, the panel is a straight panel or a curved panel having a meandering shape in the method of manufacturing a stringed instrument of another form.
Does the other form of the instrument have a hollow or semi-hollow interior, a front surface and a rear surface, and a sound board that is either the structural front surface or the structural rear surface of the hollow body? Or, both the front surface and the rear surface have a body that acts as the soundboard of the instrument.
The body has at least one tuned sound port that extends into the instrument, and the instrument is capable of sound to be present through the tuned sound port.
The tuned sound port has a hollow member that is inserted into a hole formed in the instrument.
The hollow member is a musical instrument having a central opening having a predetermined shape and having a length extending from a hole into which the tuned sound port is inserted by a certain distance.
The other form of musical instrument is the musical instrument of the above form, wherein the musical instrument is a stringed instrument.
The tuned sound port is inserted into at least a hole formed in the structural front or rear sound board of the instrument.
24. 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.
In other forms of the instrument, in the instrument of the form, the hole extending through the tuned sound port is circular and the hollow member has a cylindrical or conical shape.
The other form of the instrument is that in the instrument of said form, the hollow member is constant, within plus or minus 20%, equal to the minimum distance between 1/4 and 1/2 of the diameter of the port opening. It has a length that extends from the sound board to the inside of the instrument at a distance.
Other forms of the instrument further include, in said form, a plurality of panels connecting the front and rear soundboards to each other.
In other forms of the instrument, the panel has a flat or curved shape in the form of the instrument.
The other form of the musical instrument is the musical instrument of the above-mentioned form, in which the panel has an S-shaped shape and has a meandering shape or a sinusoidal curved shape.
Other forms of the instrument further have at least a tuned second sound port in the form of the instrument.
Each tuned sound port is symmetrically arranged to collect sound through at least one tuned sound port.
In the musical instrument of the other form, in addition to the tuned sound port, the musical instrument of the above-mentioned form has a second sound hole in the panel arranged symmetrically on both sides of the sound hole.
Other forms of the instrument, in said form, the panel extends symmetrically from both sides of the instrument and from the ends of the sides.
Other forms of the instrument further comprise a dual bridge configuration in the form of the instrument.
The dual bridge configuration includes a first bridge attached to the front sound board, a second bridge attached to the rear board, and a support column having a sound wave structure that interconnects the first bridge and the second bridge. , Have.

Other advantages of the invention will become apparent by reading the following detailed description of the invention in conjunction with the accompanying drawings.
FIG. 3 is a structural front view of an acoustic guitar made using the dual bridge and saddle assembly of the present invention. It is a structural rear view of the guitar shown in FIG. It is a structural left side view of the guitar of this invention shown in FIG. It is a structural right side view of the guitar shown in FIG. It is an end view of the structural headstock of the guitar of FIG. 1 seen from the tip of the headstock. It is an end view of the structural bottom end of the guitar of FIG. 1 as seen from the lower bout corresponding to the lower end of the guitar. FIG. 1 is a structural perspective view of the guitar of the present invention shown in FIG. 1, in which dotted lines schematically show the arrangement of panels between each sound port and sound hole, and dotted lines are used to illustrate the guitar. The two preamps mounted on one side are shown, as well as the connections between the sound collectors and their respective preamps mounted on each bridge of the dual bridge and saddle assembly, and each of the two preamps and the amplifier. Shows the external connection between. It is a structural sectional view of the guitar of this invention along the line 8A-8A shown in FIG. 7. A structural exploded view of the guitar shown in FIG. 7 as viewed from the rear side, showing a bisected guitar and dual bridge and saddle assemblies separated from each half of the guitar, and each half of the guitar. It shows the sound ports on the opposite side of each, and the linear panel provided between each sound port and the sound hole to collect and emit sound to each sound port. Another structural exploded view of the guitar of the invention shown in FIG. 8B, another embodiment of the panel of the invention shown in FIG. 8B, shows a panel having an S-shape rather than a linear shape. It is a structural exploded perspective view of the dual bridge and the saddle assembly in FIGS. 8B and 9A, in which a set of strings is stretched so as to pass through the inside of the guitar between each bridge of the dual bridge and the saddle assembly. In addition, the arrangement and shape of the saddle on which the guitar string is hung are shown in each bridge of the dual bridge and the saddle assembly of the present invention. FIG. 9B is a perspective view showing a preferred embodiment of one saddle assembly suitable for attachment to the dual bridge and saddle assembly of FIG. 9B, one integrated including a saddle and a sound pickup device embedded in the saddle. The saddle assembly that formed the unit is shown. It is a figure which shows the integrated saddle which was shown in FIG. Another three-dimensional exploded view of the dual bridge and saddle assembly of the present invention shown in FIG. 8B, each string included in a set of guitar strings for a second bridge mounted on the rear soundboard of the guitar. It is a figure which shows the method of fixing, and also shows the method of stretching a set of guitar strings so as to connect the 2nd bridge of a rear sound board and the 1st bridge of a front sound board to each other.

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

The musical instrument of the present invention is represented by the acoustic guitar 10 shown throughout FIGS. 1-9, which 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, and 12. Has a body 11 including. The dual bridge and saddle assembly 16 extends from the front soundboard 12 of the guitar 10 to the rear soundboard 14 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 connects the front sound board 12 and the rear sound board 14 and completely surrounds 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, and has a first bridge 20 attached to the front sound board 12 and a rear sound board 14. A saddle set that can be inserted into the slot 34 of the first bridge 20 as shown in FIG. 9B, and the columns 23 and 24 that interconnect the second bridge 22 and the first bridge 20 and the second bridge 22. It has a solid 30 and a saddle assembly 31 that can be inserted into the slot 40 of the second bridge 22.

A set of custom or extended length strings 33 is mounted on the front soundboard 12 from the headstock 19 at the tip of the guitar 10 along the neck 17 of the guitar 10. It extends from the first bridge 20 through the inside 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 a 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 pegged to a second bridge 22. Thus, the set of strings 33 interconnects the first bridge 20 and the second bridge 22 through the interior 18 of the hall of the guitar 10. The set of strings 33 preferably begins at a position pegged to the second bridge 22 on the rear sound board 14 and extends beyond the saddle 48 inserted into the second bridge 22 and to the first bridge 20. It is stretched beyond the saddle 44 inserted into the first bridge 20 to the first bridge 20, and is stretched from the first bridge 20 along the neck 18 of the guitar 10 to the tuning knob 15. Details will be described later with reference to FIGS. 9B and 12.

The dual bridge and saddle assembly 16 stanchions 23, 24 rear the upper sound board 12 of the guitar 10 so that the front or rear sound boards 12 and 14 do not collapse due to excessive tension due to the tension of the guitar strings 33. It functions to support and fix to the sound board 14. However, it should be understood that the use of columns 23, 24 is preferred but not significant to the present invention. The reason is that the front sound board 12 and the rear sound are provided by using a support member independent of the columns 23 and 24 of the dual bridge and saddle assembly 16 between the front sound board 12 and the rear sound board 14. This is because it is possible to obtain structural support for preventing the boards 14 from collapsing relative to each other. As another support member, for example, as described later, panels 80 and 82 incorporated with the use of the sound ports 70 and 72 can be used. The columns 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. 8A. It is preferable that the position of the sound board 12 of the guitar 10 is slightly forward toward the neck 17 of the guitar 10 with respect to the position of the rear sound board 14. With this arrangement, the tension of a set of guitar strings 33 can be somewhat reduced when tuning the guitar 10. The struts 23, 24 can be made of the desired material, preferably wood, or a composition alternative to wood, the shape of which is the desired geometry, including, for example, a rectangular parallelepiped shape, a cubic shape, a cylindrical shape. It can be a cuboid.

The dual bridge shown in FIGS. 1 and 9B and the first bridge 20 of the saddle assembly 16 has a slot 34 into which the saddle assembly 30 is inserted, and further has a plurality of openings 35 for stretching through the guitar string 33. Includes. 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 on a substantially horizontal plane in a direction crossing a set of guitar strings 33. Slots 34 of the first bridge 20 are preferably arranged at an acute angle with respect to the horizontal direction, as shown in FIG. 1, which facilitates and / or allows adjustment of a particular tone of the guitar. To. The shape and dimensions of the first bridge 20 may match the shape and dimensions of the second bridge 22 of the dual bridge and saddle assembly 16, except for the widthwise dimensions.

The second bridge 22 accommodates only one set of openings 35, whereas the second bridge 22 accommodates two sets of openings 38, 39 for the guitar string 33. As shown in 2, it is preferable to have a width d wider than the width of the first bridge 20. A set of openings 39 in the second bridge 22 is used to secure 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 slot 40 of the second bridge 22, in total twice the number of string openings 35 present in the first bridge 20. Should include openings.

As shown in FIGS. 9B and 12, the string 33 is fixed to the opening 39 of the second bridge 22 by using the peg member 42. The peg member 42 engages one end of each string 33 and is inserted into the opening 39, whereby each peg member 42 engages each string 33 within the opening 39 and engages the strings. The edge is firmly fixed to one of the openings 39. Then, 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 and passes through the saddle 48 of the saddle assembly 31. It is stretched over and then hung over the saddle 44 of the saddle assembly 31 through the opening 35 of the first bridge 20 and along the neck 17 of the guitar 10 at the tip 19 of the guitar 10. It is stretched up to the tuning knob 15.

The saddle assembly 30 can be inserted into the slot 34 of the dual bridge and the first bridge 20 of the saddle assembly 16, and as shown in FIG. 9B, the saddle 44, the pickup 45, the wire cord 46, and the output jack 47. And include. The pickup 45 is a conventional element, and is made of, for example, a sound collecting type such as a piezoelectric shield magnetic element provided in a wire coil. As shown in FIG. 7, the jack 47 extending from the wire cord 46 is adapted so that the pickup 45 can be connected to the preamplifier 60 attached to the side surface 13 of the guitar 10.

Similarly, the saddle assembly 31 can be inserted into a slot 40 in a dual bridge and a second bridge 22 of the saddle assembly 16, including a saddle 48, a pickup 50, a wire cord 51, and an output jack 52. There is. 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 the 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, the preamplifiers 60 and 62 are separated from each other in order to control the sound from each preamplifier individually. It may be connected to (not shown).

Each saddle assembly 30, 31 has saddles 44, 48 and pickups 45, 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 soundboards 12, 14, respectively. Each saddle 44, 48 may be a separate and independent component from each pickup 45, 50 in saddle assemblies 30, 31. Alternatively, one or both saddle assemblies 30, 31 may have a pickup integrated with the saddle assemblies 30, 31 to form 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 or may not be integrated with the saddle 44 to form one unit. Therefore, as shown in FIG. 9B, since the pickup device 45 of the saddle assembly 30 is an independent component, the pickup 45 is inserted independently into the slot 34 of the first bridge 20 and then the saddle from above the pickup 45. The 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.

Saddle components 44, 48 in each saddle assembly 30, 31 regardless of whether one or both saddle assemblies 30, 31 are made to form an integrated unit that includes both a saddle and a pickup. Should have a configuration including a main body 53, 55 and a thin portion 54 extending outward from the main body 53, 55. The narrow extension portion 54 should have a substantially rectangular parallelepiped shape. This is because the cross sections of the saddles 44 and 48 are T-shaped, so that the thin extension portion 54 is on the vertical side of the "T" shape, and the main body portions 53 and 55 are on 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 slots 34, 40 of the first and second bridges 20, 22 respectively. Moreover, the narrow portion 54 should have a width much narrower than the width of the main body portions 53 and 55, which is the starting point at which the thin portion 54 extends. The body 53 of the saddle 44 may have a conical shape that extends to a slightly pointed apex 56, which apex 56 is configured to engage the guitar string 33 on the front soundboard 12. On the other hand, the saddle 48 may simply have a round semi-cylindrical configuration for engaging the guitar strings 33 in the rear soundboard 14.

Although the guitar 10 of the present invention has at least one sound port, it is preferable to have two sound ports 70 and 72 as shown in FIGS. 1, 7 and 8A, and both sound ports 71 and 72 are 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 holes 13 are preferably located below the guitar strings 33 and symmetrically between the sound ports 70 and 72. Each sound port 70, 72 preferably has members 77, 78 having a desired shape. One of the soundboards, preferably the front soundboard, is formed with an opening made to accommodate the members 77, 78, the shape of the member 77, 78 being adapted for insertion into the opening. It preferably has a hollow tube shape. Each member 77, 78 extends from the front soundboard 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 soundboard 12 of the guitar and the rear soundboard 14. It is desirable to be equal to the length from 5% to 95% of. Also, the members 77, 78 should have openings 73, 74 extending through the members 77, 78. The openings 73, 74 have a desired shape and size, preferably circular, so that the members 77, 78 preferably form a parabolic or cylindrical shape. By varying one or both of the size of the openings 73, 74 and the extension length of each sound port 70, 72 within the interior 18 of the guitar 10, a desired frequency range proportional to the resonance frequency of the guitar. Sound ports 70 and 72 can be tuned individually. Optimal conditions are that the sound ports 70, 72 have circular openings 73, 74 of the same size as the members 77, 78, with the members 77, 78 from the front sound board 12 to the rear sound board 14. It has a length corresponding to a length from 20% to 80% of the distance of the guitar, which improves the tuning property 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 do not have to be the same.

It is desirable that each sound port 70, 72 be accompanied by a geometrically linear panel 80, 82 connected between the front sound board 12 and the rear sound board 14. The panels 80, 82 are arranged between the sound ports 70, 72 and the sound hole 13, and extend or extend from a position relatively close to the lower bout of the guitar 10 to a position near the neck 17 of the guitar 10. In the vicinity of the neck 17 of the guitar 10, the linear panels 80 and 82 extend so as to intersect each other. This makes it possible to collect and emit sound to the sound ports 80 and 82. Although only the two panels 80 and 82 are shown, an additional panel may be used to form an acoustic maze inside the guitar body 11.

FIG. 9 shows an alternative to the use of linear panels 80, 82, where each panel connected between the front soundboard 12 and the rear soundboard 14 has an "S" shape. 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 can be used together with the support columns 23 even when the columns 80 and 82 are used together with the support columns 23. Even when not in use, it acts as a structural support to prevent the front and / or rear soundboard from collapsing when the string tension is very high.

Claims (5)

With a hollow or semi-hollow body,
Front and rear surfaces and
With at least one sound board that is either the front surface or the rear surface of the hollow body.
A sound hole that emits sound, and one or more panels that interconnect the front and rear surfaces of the hollow body.
With at least one tuned sound port, which extends into said hollow body,
Sound can be present through the sound port,
The panel is arranged so as to be located between the sound port and the sound hole.
The panel has a first end and a second end on the other side of the first end, the first end of which contacts the side wall of the body adjacent to the sound port. The second end of the instrument is adjacent to the sound hole without touching anything. The tuned sound port has a hollow member inserted into an opening formed in the body of the instrument.
The musical instrument according to claim 1, 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 central opening is circular
The hollow member has a cylindrical shape, and is formed on the body with a minimum distance of plus or minus 20% having a length of 1/4 to 1/2 of the diameter of the central opening. The musical instrument according to claim 2, which extends at a predetermined distance from the opening. The musical instrument according to any one of claims 1 to 3, wherein the panel has a curved shape and / or a flat shape. The musical instrument according to any one of claims 1 to 4, wherein the musical instrument is a stringed musical instrument.

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