Chord musical instrument and working method
By introducing a design of variable pressure adjustment ring and multi-string arrangement in the chord chord, the problem of cumbersome guitar fingering is solved, the simple and fast playing of chords and the flexible change of tone is achieved, and the convenience and expressiveness of the performance are improved. .
Patent Information
- Application Number
- CN202411448271.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2025-02-18
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing guitar fingering is complicated, the memory is complicated, and it is difficult to master quickly, especially when it comes to chord transformation and tonality transformation.
A chord chord chord is designed to change the position of the string pillow by changing the movement of the pressure regulator ring, thereby adjusting the effective vibration length of the strings, realizing pitch adjustment and tonal change. The chord uses a multi-string arrangement, simplifying the chord playing and turning.
It realizes simple and fast playing of chords, lowers the playing threshold, simplifies the tune-to-tune process, enriches the performance expressiveness, and adapts to different voice lines.
Smart Images
Figure CN119479583A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of stringed instruments, and in particular relates to a chord instrument and a working method thereof. Background Art
[0002] A chord is composed of several notes that have a certain interval relationship with each other. The guitar presents music through the transformation and playing techniques of chords. The playing of chords usually involves pressing the strings with the left hand and plucking or sweeping the strings with the right hand. There are many types of chords, the most common of which are triads (such as major triads, minor triads, etc.), seventh chords (such as major seventh chords, minor seventh chords, etc.) and suspended chords. The pressing methods of these chords on the guitar are different, but they are all achieved by pressing the fingers of the left hand on different frets. In addition, the key change requires changing different fingerings, which is cumbersome to operate and requires a lot of memory and repeated practice to master. Therefore, a chord piano that fundamentally solves simple chords and facilitates key change is needed to achieve the purpose of being simple to get started, easy to learn and efficient. Summary of the invention
[0003] The purpose of the present invention is to provide a chord instrument, aiming to solve the technical problems that the existing guitar fingering is cumbersome, difficult to remember, and difficult to master quickly.
[0004] In order to achieve the above-mentioned purpose, the chord piano provided by the present invention is a string instrument that focuses on chord changes and reduces the playing threshold. The pitch change is achieved by equivalently changing the position of the string nut, that is, changing the effective vibration length of the string. Specifically, when the pitch change pressure ring moves to a certain fret of the chord piano, the string part above the fret will be fixed, and only the string part below the fret can vibrate and sound, thereby changing the pitch of the string, which can not only adjust the tone and simplify the difficulty of changing the key, but also enrich the performance expression and adapt to different voice lines.
[0005] The technical solution adopted by the present invention to solve the technical problem is: a chord piano and a working method, characterized in that the chord piano is mainly composed of three parts: a head, a neck, and a piano case, including in detail: a head, string knobs, a nut, frets, frets, a capo ring, a neck, a bridge, a saddle, strings, sound holes, string pegs, a piano case, etc. The head is connected to the piano case through the neck; a number of string knobs are installed on the piano, and the pitch is adjusted by rotating the string knobs to change the pressure of the strings; the role of the neck is equivalent to the fingerboard of a guitar, and is used for holding fingers to press different frets; the nut is fixed to the upper end of the neck, close to one end of the piano; the frets are embedded in the neck, and each of the frets forms the frets; the capo ring is put on the neck, and moved to the required frets to obtain the chords of the required musical mode; the bridge is fixed to the lower end of the neck, which is the The strings transmit vibration to the key structure of the instrument case; the bridge is fixed at the upper end of the instrument case and is the connection end point of the strings; the strings are parallel to the neck, pass through the headstock to the instrument case, the upper ends are wound around and connected to the pegs of the string buttons, the lower ends pass through the holes of the bridge and are connected to the string pegs; the string pegs fix the strings to the bridge; the instrument case is gourd-shaped, divided into an upper belly and a lower belly, the lower belly is closed, and the upper belly is provided with a number of long sound holes, which can pluck the strings to produce freer vibrations, form resonance, enhance the timbre, and make the sound inside the instrument transmit outside the instrument.
[0006] The working method of the chord piano: for triads, just pluck (strum) 3 adjacent strings at the same time. If you want to increase or decrease the modulation or change the key, just move the modulation pressure ring to the corresponding fret; similarly, for seventh chords, pluck 4 adjacent strings at the same time, for ninth chords, pluck 5 adjacent strings at the same time, for eleventh chords, pluck 6 adjacent strings at the same time, and for thirteenth chords, pluck 7 adjacent strings at the same time.
[0007] Preferably, the strings are at least 7 strings, and the open string notes from thin to thick are: treble E, treble C, middle A, middle F, middle D, bass B, bass G, and the corresponding simplified notations are: 3, 1, 6, 4, 2, 7, 5. If 9 strings are used, two bass strings can be added, and the open string notes from thin to thick are: treble E, treble C, middle A, middle F, middle D, bass B, bass G, bass E, bass C, and the corresponding simplified notations are: 3, 1, 6, 4, 2, 7, 5, 3, 1.
[0008] Preferably, the triad, taking the chords in C major as an example, plays three adjacent strings, and the C major chords include: C, Dm, Em, F, G, Am, Bdim, etc., first to seventh degree chords. The first degree triad is 135 (note name CEG), the second degree triad is 246 (note name DFA), the third degree triad is 357 (note name EGB), the fourth degree triad is 461 (note name FAC), the fifth degree triad is 572 (note name GBD), the sixth degree triad is 613 (note name ACE), and the seventh degree triad is 724 (note name BDF). The first, fourth, and fifth chords (the chord names are C, F, and G respectively) are major triads and sound brighter; the second, third, and sixth chords (the chord names are Dm, Em, and Am respectively) are minor triads and sound darker; the seventh chord (the chord name is Bdim respectively) is a diminished triad and sounds tense and weird.
[0009] Preferably, the triad described above only needs to move the capo pressure ring down two frets and play three adjacent strings to obtain a D-key triad, characterized in that the D major chord includes: D, E, #F, G, A, B, #Cdim, etc. chords from the first to the seventh degree. The remaining ten tonality are similar.
[0010] More preferably, the seventh chord, taking the chord in C major as an example, plays 4 adjacent strings, the first-level seventh chord 1357 (note name CEGB), the second-level seventh chord 2461 (note name DFAC), the third-level triad 3572 (note name EGBD), the fourth-level triad 4613 (note name FACE), the fifth-level triad 5724 (note name GBDF), the sixth-level triad 6135 (note name ACEG), and the seventh-level triad 7246 (note name BDFA). Similarly, by moving the modulation pressure ring down two frets, you can get the seventh chord in the key of D. In particular, the ninth chord, the eleventh chord, the thirteenth chord, and so on. If the modulation pressure ring moves to the same fret and cannot completely correspond to the chord of a certain scale, you can add corresponding operations, such as pressing adjacent notes to play the notes of the chord with rising and falling tones.
[0011] Preferably, the strings are of different colors for quick identification, and the strings (9 strings) are 0.012, 0.016, 0.020, 0.025, 0.032, 0.042, 0.046, 0.054, and 0.059 inches (corresponding to 0.3, 0.4, 0.5, 0.6, 0.8, 1.0, 1.2, 1.4, and 1.5 mm) in specifications from thin to thick.
[0012] Preferably, a piano support is provided at the bottom of the piano case, and the piano is assembled on the piano seat through bearings.
[0013] More preferably, the bottom of the piano case is provided with the ball-hinged piano support, and the ball-hinged piano is assembled on the ball-hinged piano seat via bearings.
[0014] More preferably, the bottom of the piano case is provided with the piano support, which is assembled on the ball-hinged piano seat through the bearing of the ball-hinged shaft. The structure facilitates the rotation and swinging of the piano body during playing, and piano feet can be installed at the bottom of the piano case to replace the piano support and piano seat.
[0015] More preferably, the tuning ring is composed of one adjusting ring and several adaptive pressure wheels, the number of which is determined by the number of the strings, and the strings are adaptively pressed onto a certain fret of the neck to meet the tonality requirements.
[0016] The adaptive pressure wheel includes a pressure wheel, a pressure column, a pressure spring, a screw, etc., and can move radially on the adjustment ring. The pressure wheel is assembled in the pressure column, and the pressure spring is installed above the pressure column. The screw passes through the pressure spring and is connected to the pressure column, and is connected through the hole on the adjustment ring to form an integral component.
[0017] The beneficial effects of the present invention are
[0018] The present invention improves the arrangement of strings and reasonably tunes open strings, so as to easily and conveniently realize the playing of chords such as triads and seventh chords.
[0019] The ingenious arrangement of the strings of the present invention is conducive to chord changes, simplifies the difficulty of key changes, reduces the playing threshold, and makes it easy to master without memorizing a large number of complicated fingerings.
[0020] The present invention can obtain triads, seventh chords, etc. of different tonality (twelve tonality of major and minor keys, twenty-four in total) by moving the modulation ring on different frets. For example: C major triad C, Dm, Em, F, G, Am, Bdim. It is rich in expression, flexible in playing, concise and practical.
[0021] The present invention is flexible and convenient in setting chord tonality, exquisite and practical, can play melodies like a guitar, enrich performance expression, and adapt to different voices.
[0022] The arrangement of the tuning pitch of the strings of the present invention is also applicable to the guitar structure of the prior art. The guitar handle is replaced with cardboard, the capo pressure ring is replaced with a capo (a special adaptive capo can also be used), the strings are changed from a cylindrical arrangement to a flat arrangement, and the starting and ending strings of the right hand plucking or strumming the chords are identified by color. However, the hand-holding comfort of the large fingerboard is slightly weaker than that of the cylindrical fingerboard. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] FIG. 1 is an axonometric view of the harp of the present invention.
[0024] FIG. 2 is an axonometric view of the bottom of the harp of the present invention.
[0025] FIG. 3 is a cross-sectional view of the bottom bracket bearing structure of the chord harp of the present invention.
[0026] FIG. 4 is a cross-sectional view of the ball joint structure of the bottom bracket of the chord harp of the present invention.
[0027] FIG. 5 is a cross-sectional view of the bearing ball joint structure of the bottom bracket of the chord harp of the present invention.
[0028] FIG. 6 is a cross-sectional view of the pressure regulating ring of the chord instrument of the present invention.
[0029] FIG. 7 is an enlarged cross-sectional view of the adaptive pressure wheel of the chord harp of the present invention. FIG. 8 is a diagram showing the arrangement of strings in the form of a guitar fingerboard according to the present invention.
[0030] In the figure: 0, guitar head; 1, string knobs; 2, string nut; 3, frets; 4, frets; 5, capo ring; 6, guitar handle; 7, bridge; 8, nut; 9, strings; 10, sound holes; 11, string pegs; 12, guitar case; 13, guitar rest; 14, guitar seat; 15, ball-hinged guitar rest; 16, ball-hinged guitar seat; 17, guitar rest; 18, ball-hinged shaft; 19, ball-hinged guitar seat; 20, adaptive pressure wheel; 21, adjusting ring; 200, pressure wheel; 201, pressure post; 202, compression spring; 203, screw. DETAILED DESCRIPTION
[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the relevant technologies in the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0032] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "left", "right", "head", "tail", "horizontal", "top", "bottom", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0033] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or can communicate with each other; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0034] Embodiment 1
[0035] As shown in FIG1 , a chord piano and a working method are characterized in that the chord piano is mainly composed of three parts: a headstock, a neck, and a piano case, which include in detail: a headstock 0, a string knob 1, a string nut 2, a fret 3, a fret 4, a capo ring 5, a neck 6, a string bridge 7, a saddle 8, a string 9, a sound hole 10, a string peg 11, a piano case 12, etc.
[0036] The headstock 0 is connected to the instrument case 12 via the handle 6; a plurality of string knobs 1 are mounted on the headstock 0, and the pitch is adjusted by rotating the string knobs to change the pressure of the strings 9.
[0037] The function of the neck 6 is equivalent to the fingerboard of a guitar, and is used for holding fingers to press different frets; the nut 2 is fixed to the upper end of the neck 6, close to one end of the headstock 0; the frets 3 are embedded in the neck 6, and each fret 3 forms a fret 4; the capo ring 5 is put on the neck 6, and moved to the required fret 4, so as to obtain the chord of the required musical mode.
[0038] The bridge 7 is fixed to the lower end of the neck 6 and is the key structure for the string 9 to transmit vibration to the instrument case 12; the saddle 8 is fixed to the upper end of the instrument case 12 and is the connection end point of the string 9; the string 9 is parallel to the neck 6, passes through the headstock 0 to the instrument case 12, and its upper end is wound around the peg of the string knob 1, and its lower end passes through the hole of the saddle 8 and is connected to the string peg 11; the string peg 11 fixes the string 9 to the saddle 8.
[0039] The instrument case 12 is in the shape of a treasure gourd, and is divided into an upper part and a lower part. The lower part is closed, and the upper part has a plurality of sound holes 10 in a long strip shape. Plucking the strings produces freer vibrations, forms resonance, strengthens the timbre, and allows the sound inside the instrument to be transmitted outside the instrument.
[0040] Embodiment 2
[0041] The working method of the chord piano: for triads, just pluck the three adjacent strings at the same time. If you want to increase or decrease the modulation or change the key, just move the modulation ring 5 to the corresponding fret; similarly, for seventh chords, pluck the four adjacent strings at the same time, for ninth chords, pluck the five adjacent strings at the same time, for eleventh chords, pluck the six adjacent strings at the same time, and for thirteenth chords, pluck the seven adjacent strings at the same time.
[0042] Furthermore, the strings 9 of the chord guitar use at least 7 strings, and the names of the open strings from thin to thick are: treble E, treble C, middle A, middle F, middle D, bass B, bass G, and the corresponding simplified notations are: 3, 1, 6, 4, 2, 7, 5.
[0043] Embodiment 3
[0044] A chord guitar uses 9 strings, so two bass strings can be added to the basis of 7 strings. The names of the open strings from thin to thick are: treble E, treble C, middle A, middle F, middle D, bass B, bass G, bass E, bass C. The corresponding simplified notations are: 3, 1, 6, 4, 2, 7, 5, 3, 1, and the corresponding singing names are: mi, do, la, fa, re, si, sol, mi, do.
[0045] Furthermore, triads, taking the chords in C major as an example, play three adjacent strings. C major chords include: C, Dm, Em, F, G, Am, Bdim, etc. First to seventh degree triads. First degree triad 135 (note name CEG), second degree triad 246 (note name DFA), third degree triad 357 (note name EGB), fourth degree triad 461 (note name FAC), fifth degree triad 572 (note name GBD), sixth degree triad 613 (note name ACE), seventh degree triad 724 (note name BDF). The first, fourth, and fifth chords (the chord names are C, F, and G respectively) are major triads and sound brighter; the second, third, and sixth chords (the chord names are Dm, Em, and Am respectively) are minor triads and sound darker; the seventh chord (the chord name is Bdim respectively) is a diminished triad and sounds tense and weird.
[0046] Embodiment 4
[0047] Furthermore, the chord piano only needs to move the capo pressure ring (5) down two frets and play three adjacent strings to obtain a D-key triad, which is characterized in that the D major chord includes: D, E, #F, G, A, B, #Cdim, etc., first to seventh chords. The remaining ten tonality can be deduced in the same way.
[0048] Furthermore, for the seventh chord, take the chord in C major as an example, play the four adjacent strings, the first-level seventh chord is 1357 (note name CEGB), the second-level seventh chord is 2461 (note name DFAC), the third-level triad is 3572 (note name EGBD), the fourth-level triad is 4613 (note name FACE), the fifth-level triad is 5724 (note name GBDF), the sixth-level triad is 6135 (note name ACEG), and the seventh-level triad is 7246 (note name BDFA). Similarly, by moving the modulation ring 5 down two frets, you can get the seventh chord in the key of D. In particular, the ninth chord, the eleventh chord, the thirteenth chord, and so on. If the modulation ring 5 is moved to the same fret and cannot completely correspond to the chord of a certain scale, you can add corresponding operations, such as pressing adjacent notes to play the notes of the chord with rising and falling tones.
[0049] Embodiment 5
[0050] Furthermore, the strings 9 are colored in different colors for quick identification. If the strings 9 are 9 strings, the specifications from thin to thick are 0.012, 0.016, 0.020, 0.025, 0.032, 0.042, 0.046, 0.054, 0.059 inches (corresponding to 0.3, 0.4, 0.5, 0.6, 0.8, 1.0, 1.2, 1.4, 1.5 mm). Of course, strings of different thicknesses can be used, or some adjacent strings can be of the same thickness, and the tension of the strings can be adjusted to achieve the same effect. The above is just a recommendation for a better match.
[0051] Embodiment 6
[0052] Furthermore, as shown in FIG. 2 and FIG. 3 , a piano support 13 is mounted at the bottom of the piano case 12 , and the piano support 13 is assembled on the piano seat 14 through a bearing.
[0053] Embodiment 7
[0054] Furthermore, as shown in FIG. 4 , a ball-hinged piano holder 15 is mounted at the bottom of the piano case 12 , and the ball-hinged piano holder 15 is assembled on a ball-hinged piano seat 16 through a bearing.
[0055] Embodiment 8
[0056] Furthermore, as shown in FIG. 5 , a piano support 17 is mounted at the bottom of the piano case 12 , and the piano support 17 is assembled on a ball-hinged piano seat 19 through a bearing of a ball-hinged shaft 18 .
[0057] Embodiment 9
[0058] Furthermore, the structure facilitates the rotation and swinging of the piano body during playing, and piano legs can be installed at the bottom of the piano box to replace the piano support 13 and the piano seat 14.
[0059] Embodiment 10
[0060] Furthermore, the tuning ring 5 of the chord instrument is composed of an adjustment ring 21 and a plurality of adaptive pressure wheels 20. The number of adaptive pressure wheels 20 is determined by the number of strings 9, and the strings 9 are adaptively pressed on a certain fret 3 of the neck 6 to meet the tonality requirements, as shown in FIG6.
[0061] Furthermore, as shown in FIG. 7 , the adaptable pressing wheel 20 includes a pressing wheel 200, a pressing column 201, a compression spring 202, a screw 203, etc., which can move radially on the adjusting ring 21. The pressing wheel 200 is assembled in the pressing column 201, a compression spring 202 is installed above the pressing column 201, and the screw 203 passes through the compression spring 202 and is connected to the pressing column 201, and is connected through the hole on the adjusting ring 21 to form an integral component.
[0062] Embodiment eleven.
[0063] In this embodiment, by improving the arrangement of the strings and reasonably tuning the open strings, the playing of chords such as triads and seventh chords can be easily and conveniently achieved. This arrangement of strings is conducive to chord changes, simplifies the difficulty of key changes, reduces the threshold for playing, and does not require the memorization of a large number of cumbersome fingerings, and is easily and skillfully mastered. By moving the modulation pressure ring on different frets, triads, seventh chords, ninth chords, eleventh chords, thirteenth chords, etc. of different tonality (twelve tonality in major and minor modes, twenty-four in mind, namely C, ♭D, D, ♭E, E, F, ♯F / ♭G, G, ♭A, A, ♭B, B and other major keys, a, ♭b, b, c, ♯c, d, ♯d / ♭e, e, f, ♯f, g, ♯g and other minor keys) can be obtained, such as: C major triad C, Dm, Em, F, G, Am, Bdim. It is expressive, flexible to play, concise and practical.
[0064] Embodiment 12
[0065] As shown in FIG. 8 , the arrangement of the strings can also be applied to the guitar fingerboard, but it is more compact, effectively controlling the width of the fingerboard, and the open string tuning is the same as the present invention to achieve the same chord playing function and effect.
[0066] Embodiment 13
[0067] The shape of the guitar case 12 is designed to be a desired shape, and the strings are arranged as an electric guitar, mainly by setting one or two pickups at the end of the neck 6, or replacing the neck with a fingerboard, but by properly tuning the open strings as mentioned above, the customized electric guitar can achieve the same chord playing function and effect.
[0068] In summary, the present invention provides a chord piano and a working method. The chord piano can easily and conveniently play and change the key of chords by setting multiple strings and moving the key-changing pressure ring, including triads, seventh chords, ninth chords, eleventh chords, thirteenth chords, etc. The chord piano can play melodies like the existing guitar. On the basis of fixed-tuned chords, it has rich expressiveness, flexible playing, and is concise and practical. It is worth noting that the chord piano eliminates cumbersome fingering, does not require a lot of skilled memory, is quick and easy to master, and simplifies the difficulty of key change. Therefore, the present invention has analogous and equivalent application scenarios.
[0069] It should be emphasized that the above is only a preferred embodiment of the present invention and does not impose any form of limitation on the present invention. Any simple modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention, directly or indirectly applied to other related technical fields, are still included in the protection scope of the technical solution of the present invention.
Claims
1. A chord instrument and a working method, characterized in that: The chord instrument mainly consists of three parts: a headstock, a neck and a case, and includes in detail: a headstock (0), string knobs (1), a string saddle (2), frets (3), frets (4), a capo ring (5), a neck (6), a string bridge (7), a bridge (8), strings (9), sound holes (10), string pegs (11), a case (12), etc.; the headstock (0) is connected to the case (12) through the neck (6); a plurality of string knobs (1) are mounted on the headstock (0), and the pitch is adjusted by rotating the string knobs to change the pressure of the strings (9); The function of the guitar handle (6) is equivalent to the fingerboard of a guitar, and is used for holding fingers to press different frets; the string nut (2) is fixed to the upper end of the guitar handle (6), close to one end of the guitar head (0); The frets (3) are inlaid on the neck (6), and each of the frets (3) forms the frets (4); The modulation pressure ring (5) is sleeved on the neck (6) and moved to the required fret (4) to obtain the chord of the required musical mode; The string bridge (7) is fixed to the lower end of the handle (6) and is a key structure for the strings (9) to transmit vibrations to the instrument box (12); The bridge (8) is fixed to the upper end of the piano case (12) and is the connection end point of the strings (9); The strings (9) are parallel to the handle (6), extending from the headstock (0) to the instrument case (12), with the upper ends of the strings being wound around and connected to the pegs of the string knobs (1), and the lower ends of the strings passing through the holes of the bridge (8) and connected to the string pegs (11); The string pegs (11) fix the strings (9) on the bridge (8); The instrument case (12) is in the shape of a treasure gourd, and is divided into an upper part and a lower part. The lower part is closed, and the upper part is provided with a plurality of sound holes (10) in a long strip shape. When the strings are plucked, freer vibrations are generated, resonance is formed, the timbre is enhanced, and the sound inside the instrument is enhanced. Out of the instrument; Working method of the chord piano: for triads, pluck (strum) three adjacent strings at the same time. If you want to change the key or change the key, move the modulation ring (5) to the corresponding fret; similarly, for seventh chords, pluck four adjacent strings at the same time, and for ninth chords, For an eleventh chord, pluck five adjacent strings at the same time. For an eleventh chord, pluck six adjacent strings at the same time. For a thirteenth chord, pluck seven adjacent strings at the same time.
2. A chord instrument and working method according to claim 1, characterized in that: The strings (9) are composed of at least 7 strings, and the open strings are named from thin to thick: treble E, treble C, middle A, middle F, middle D, bass B, Bass G, the corresponding simple notation is: 3, 1, 6, 4, 2, 7, 5. If 9 strings are used, two bass strings can be added. The names of the open strings from thin to thick are: high E, high C, middle A, middle F, middle D, bass B, bass G, The corresponding simplified notations for bass E and bass C are: 3, 1, 6, 4, 2, 7, 5, 3, 1.
3. A chord instrument and working method according to claim 2, characterized in that: The triad described above takes the chords in C major as an example, and plays three adjacent strings. The C major chords include: C, Dm, Em, F, G, Am, Bdim, etc. First to seventh chords. First triad 135 (note name CEG), second triad 246 (note name DFA), third triad 357 (note name EGB), fourth triad 461 (note name FAC), fifth triad 572 (note name GBD), sixth triad 613 (note name ACE), seventh triad 724 (note name BDF). First, fourth, fifth, etc. chords (chord names are C, F, G respectively) are major triads and sound brighter; second, third, sixth, etc. chords (chord names are Dm, Em, Am) are minor triads and sound darker; the seventh chord (the chord names are Bdim) are diminished triads and sound tense and weird.
4. The chord instrument and the working method according to claim 1 and claim 3, characterized in that: It is only necessary to move the modulation ring (5) down two frets to obtain a D-key triad, which is characterized in that the D major chord includes: D, E, #F, G, A, B, #Cdim, etc. chords from level 1 to level 7. The same goes for the remaining ten keys.
5. The chord instrument and the working method according to claim 1 and claim 2, characterized in that: The seventh chord, taking the chord in C major as an example, the first-degree seventh chord is 1357 (note name CEGB), the second-degree seventh chord is 2461 (note name DFAC), the third-degree triad is 3572 (note name EGBD), the fourth-degree triad is 4613 (note name FACE), the fifth-degree triad is 5724 (note name GBDF), the sixth-degree triad is 6135 (note name ACEG), and the seventh-degree triad is 7246 (note name BDFA). Similarly, by moving the modulation ring (5) down two frets, the seventh chord in the key of D can be obtained. In particular, the ninth chord, the eleventh chord, the thirteenth chord, and so on are analogous. If the modulation ring (5) is moved to the same fret and cannot completely correspond to the chord of a certain scale, a corresponding operation can be added, such as pressing adjacent notes to play the notes of the chord with rising and falling tones.
6. The chord instrument and the working method according to claim 1 and claim 2, characterized in that: The strings (9) are in different colors for easy identification, and the strings (9) (9 strings) are 0.012, 0.016, 0.020, 0.025, 0.032, 0.042, 0.046, 0.054, 0.059 inches (corresponding to 0.3, 0.4, 0.5, 0.6, 0.8, 1.0, 1.2, 1.4, 1.5 mm) specifications.
7. The chord instrument and the working method according to claim 1, characterized in that: A piano support (13) is arranged at the bottom of the piano case (12), and the piano support (13) is assembled on the piano seat (14) through a bearing.
8. The chord instrument and the working method according to claim 1 and claim 7, characterized in that: The bottom of the piano case (12) is provided with the ball-hinged piano holder (15), and the ball-hinged piano holder (15) is assembled on the ball-hinged piano seat through a bearing. (16) Above.
9. The chord instrument and the working method according to claim 1 and claim 7, characterized in that: The bottom of the piano case (12) is provided with the piano support (17), and the piano support (17) is assembled on the piano case (12) through the bearing of the ball hinge shaft (18). The structure is convenient for the piano body to rotate and swing flexibly during playing, and the piano foot can be installed at the bottom of the piano box instead.
10. The chord instrument and the working method according to claim 1, characterized in that: The variable pressure ring (5) is composed of an adjustment ring (21) and a plurality of adaptive pressure wheels (20), wherein the number of the adaptive pressure wheels (20) is determined by the The number of strings (9) is determined, and the strings (9) are adaptively pressed onto a certain fret (3) of the handle (6) to meet the tonality requirements; The adaptable pressing wheel (20) comprises a pressing wheel (200), a pressing column (201), a pressing spring (202), a screw (203), etc., and can move radially on the adjusting ring (21). The pressing wheel (200) is assembled in the pressing column (201). The compression spring (202) is installed above the compression column (201), and the screw (203) passes through the compression spring (202) and is connected to the compression column (201), and is connected through the hole on the adjustment ring (21) to form an integral component.