A guqin musical instrument

Abstract

The application discloses a qin musical instrument and relates to the technical field of stringed instruments. The qin musical instrument comprises two-bed innovative qins, the qin comprises a qin body and strings arranged above the qin body, a resonance cavity is arranged in the qin body, a dragon pool and a phoenix marsh in communication with the resonance cavity are arranged at the bottom of the qin body, and effective string lengths of the two-bed innovative qins are 1260-1308 mm and 680-700 mm respectively. The two-bed innovative qins are bass qins and treble qins respectively, wherein the bass qin is eight degrees lower than a traditional qin, the treble qin is eight degrees higher than the traditional qin, the traditional qin is taken as a medium qin, a relationship of eight degrees of interval is formed among the three qins, and the range of the qin is widened. Complete music performance from bass to treble can be realized under the cooperation of the three qins, and the integrity and diversity of the qin in music performance are improved.

Description

Technical Field

[0001] This application relates to the field of plucked string instruments, specifically to a guqin (a seven-stringed zither). Background Technology

[0002] The guqin, a traditional plucked string instrument, boasts a long history and profound cultural heritage. The traditional guqin typically consists of a soundboard and a backboard joined together to form a long, narrow, hollow resonating body. The soundboard is arched, symbolizing the roundness of heaven; the backboard remains flat, symbolizing the earth. Seven strings span the soundboard, vibrating when plucked by the player to produce a clear, ancient, and uniquely melodious sound.

[0003] Traditional guqin is usually played as a solo instrument. The performer uses a variety of finger techniques and skills, such as delicate harmonics, expressive fingering, and agile glissando, to accurately convey inner emotions to the audience, creating a profound, ethereal, and timeless artistic conception that allows people to immerse themselves in the music and experience its charm.

[0004] However, although the traditional guqin covers a wide range of middle notes, its resonance in low and high notes is relatively weak. In particular, when playing low and high notes, it often needs to be played in ensemble with other instruments, which to some extent limits the independent expressiveness and artistic integrity of guqin music. Utility Model Content

[0005] The purpose of this application is to provide a guqin musical instrument that solves the problem that the traditional guqin needs to be played in ensemble with other instruments when playing low and high-pitched works.

[0006] The technical solution adopted by this application to solve its technical problem is: A guqin musical instrument includes three guqins, each guqin having a body and strings located above the body. The body has a resonating cavity, and the bottom of the body has a pool and a pond connected to the resonating cavity. The effective string lengths of the three guqins are 1260–1308 mm, 1120–1140 mm, and 680–700 mm, respectively.

[0007] Furthermore, the effective string lengths of the three guqins are 1280mm, 1130mm, and 690mm, respectively.

[0008] Furthermore, the resonance cavity is provided with a resonance plate, which divides the resonance cavity into an upper cavity and a lower cavity from top to bottom. The resonance plate is provided with a sound hole that connects the upper cavity and the lower cavity.

[0009] Furthermore, the resonant cavity is provided with a positioning groove, and the edge of the resonant plate is engaged in the positioning groove.

[0010] Furthermore, the instrument body includes a front panel and a back plate fitted below the front panel, with the resonance cavity formed between the front panel and the back plate, and the positioning groove disposed between the mating surfaces of the front panel and the back plate.

[0011] Furthermore, the sound hole is staggered with respect to the dragon pool and the phoenix swamp.

[0012] Furthermore, the bottom surface of the instrument body is a downward-protruding arched structure.

[0013] Furthermore, the top surface of the instrument body is provided with a bridge near its head, and the bottom surface of the instrument body is provided with a goose foot assembly and several tuning mechanisms. The number of tuning mechanisms is consistent with the number of strings and corresponds one-to-one. One end of the string passes around the tail end of the instrument body and connects to the goose foot assembly, and the other end of the string passes around the bridge and connects to its corresponding tuning mechanism.

[0014] Furthermore, the goose-foot assembly includes two goose feet connected to the bottom surface of the instrument body and a fixing rod connected between the two goose feet, and the string is connected to the fixing rod.

[0015] Furthermore, the tuning mechanism includes a fixed frame disposed on the bottom surface of the instrument body. The fixed frame is provided with a pin and an operating rod that rotate around its own axis. One end of the pin is provided with a worm gear, and one end of the operating rod is provided with a worm gear that is connected to the worm gear for transmission. The string is connected to the pin and wound around the pin.

[0016] The beneficial effects of this application are: The guqin instrument provided in this application embodiment, by setting up three guqins with effective string lengths of 1260-1308mm, 1120-1140mm, and 680-700mm respectively, enables the three guqins to form bass, mid-range, and treble guqins respectively, and the three guqins are in an octave relationship with each other, thus widening the range of the guqin. With the cooperation of the three guqins, it can complete the musical expression from bass to treble without relying on other instruments to compensate for the bass and treble parts, thereby breaking through the limitations of the traditional guqin range and enhancing the independence and integrity of the guqin in musical expression.

[0017] Compared to existing technologies, this application, through the independent design of three guqin (a seven-stringed zither), allows the bass guqin to provide a deep and mellow bass foundation, the mid-range guqin to maintain the traditional serene and ancient tone of the guqin, and the treble guqin to provide a bright and lively high-pitched effect. This enables each guqin to fully express its unique tonal characteristics within its respective range. The three guqin can be flexibly combined according to the needs of different musical works, allowing for solo, ensemble, and duet performances. The coordinated use of the three guqin not only allows the performer to fully utilize their technical advantages but also better creates the profound, ethereal, and far-reaching artistic conception unique to guqin music, enabling listeners to more fully experience the unique charm of guqin music. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the guqin musical instrument provided in the embodiments of this application; Figure 2 This is a top view of the guqin (a seven-stringed zither). Figure 3 This is a bottom view of the guqin (a seven-stringed zither). Figure 4 This is a cross-sectional view of the instrument's body; Figure 5 yes Figure 4 A schematic diagram of the structure after removing the resonating plate; Figure 6 This is a schematic diagram of the structure of the goose-foot assembly; Figure 7 This is another structural schematic diagram of the goose-foot assembly; Figure 8 This is a schematic diagram of the tuning mechanism; Figure 9 yes Figure 8 A cross-sectional view along line AA.

[0020] Figure label: 1- Guqin (a seven-stringed zither); 10-The body of the instrument; 101-Face plate; 102-Bottom plate; 1021-Dragon pool; 1022-Phoenix pool; 103-Resonance plate; 1031-Sound hole; 104-Resonance cavity; 1041-Positioning groove; 105-Upper cavity; 106-Lower cavity; 107-Heaven pillar; 108-Earth pillar; 109-String eye; 11-Strings; 12-Mountain Yue; 13-Goose foot assembly; 131-Goose foot; 132-Fixing rod; 14-Tuning mechanism; 141-Fixing frame; 142-Pin; 1421-String fixing hole; 143-Operating lever; 144-Worm gear; 145-Worm. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0022] In the description of this application, the terms "upper," "lower," "left," "right," "front," "rear," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Unless otherwise specified, the above-mentioned orientational descriptions can be flexibly set in actual application, provided that the relative positional relationships shown in the accompanying drawings are satisfied.

[0023] As a classic plucked string instrument in traditional Chinese music, the guqin carries a profound historical heritage and unique cultural connotations. However, although the traditional guqin covers a wide range of middle notes, its resonance in low and high notes is relatively weak. In particular, when playing low and high notes, it often needs to be played in ensemble with other instruments, which to some extent limits the independent expressiveness and artistic integrity of guqin music.

[0024] The inventor of this application is a seasoned guqin maker who not only deeply studies the guqin instrument but is also proficient in the production and repair of violins. Through long-term practice, the inventor has thoroughly studied the sound production principles of the guqin and violins, discovering limitations in the guqin's soundbox structure, string length ratio, and soundboard design. Through years of research and experimentation, the inventor, drawing on the sound production principles of violins, designed and invented high and low registers for the guqin, thus creating a series of guqins. Like violins, the guqin now possesses high, middle, and low registers, exhibiting harmonic qualities and polyphonic musical effects, and its melodies have become richer and more diverse, thereby greatly enhancing the guqin's musical expressiveness and artistic value.

[0025] The inventor ultimately came up with the innovative concept of using three guqins in combination, assigning high, middle, and low notes to three different guqins. The three guqins are designed to be both independent and complementary, achieving harmonic and polyphonic musical effects. This not only effectively expands the guqin's range but also preserves the unique timbre and playing techniques of the traditional guqin, achieving a major breakthrough in the expressiveness and artistry of guqin music.

[0026] See Figure 1 , Figure 2 , Figure 3 This application provides a guqin musical instrument, including three guqin 1. Each guqin 1 includes a body 10 and strings 11 located above the body 10. The body 10 has a resonance cavity 104. The bottom of the body 10 has a dragon pool 1021 and a phoenix pond 1022 communicating with the resonance cavity 104. The effective string lengths of the three guqin 1 are 1260-1308mm, 1120-1140mm and 680-700mm, respectively.

[0027] For details, see Figure 1 The guqin musical instrument in this application embodiment includes two innovative guqin 1 and one traditional guqin 1. The two innovative guqin 1 are guqin A and guqin C, respectively, and the one traditional guqin 1 is guqin B. See also Figure 2 , Figure 3 Each guqin 1 includes a body 10 and seven strings 11 located above the body 10. The body 10 contains a resonance chamber 104. From right to left, the bottom of the body 10 has a dragon pool 1021 and a phoenix pond 1022, both connected to the resonance chamber 104. Within the resonance chamber 104, from right to left, are a heaven pillar 107 and an earth pillar 108. When the player plucks the strings 11, the vibration of the strings 11 is transmitted through the body 10 to the resonance chamber 104. The vibration of the resonance chamber 104 is then transmitted through the dragon pool 1021 and the phoenix pond 1022 out of the body 10, creating a composite vibration that produces a melodious sound.

[0028] The effective string length of the guqin (1) refers to the length from the inside of the bridge (Yueshan) to the inside of the dragon's teeth (Longyin). This is the portion of the string (11) that actually vibrates and produces sound. Each guqin (1) has a unique effective string length. The effective string length directly affects the pitch of the guqin (1); the longer the effective string length, the lower the vibration frequency and the lower the pitch; the shorter the effective string length, the higher the vibration frequency and the higher the pitch. (Continue to see...) Figure 1The effective string lengths of guqin A are L1, L1 = 1260–1308 mm; the effective string lengths of guqin B are L2, L2 = 1120–1140 mm; and the effective string lengths of guqin C are L3, L3 = 680–700 mm. For example, the effective string lengths of the three guqin 1 can be 1280 mm, 1130 mm, and 690 mm respectively. By setting the effective string lengths of guqin A, B, and C to the aforementioned specific lengths, this specific length relationship not only makes guqin A a bass guqin, guqin B a mid-range guqin, and guqin C a soprano guqin, but also creates an octave interval relationship between guqin A, B, and C. That is, guqin A is an octave lower than guqin B, and guqin C is an octave higher than guqin B. The octave interval relationship creates a three-dimensional effect in music. When playing with guqin A, guqin B and guqin C, guqin A in the low range can provide a deep and mellow bass tone, guqin B in the middle range can provide a clear and simple middle tone, and guqin C in the high range can provide a bright and lively high tone. This sense of tonal layering can greatly enrich the expressiveness of music.

[0029] The guqin musical instrument provided in this application embodiment, by setting up three guqin 1s, and setting the effective string lengths of the three guqin 1s to 1260-1308mm, 1120-1140mm and 680-700mm respectively, enables the three guqin 1s to form a bass, middle and treble guqin respectively, and the three guqin 1s are in an octave interval relationship with each other, thus widening the range of the guqin 1s. With the cooperation of the three guqin 1s, it can complete the complete musical expression from bass to treble, without relying on other instruments to compensate for the bass and treble parts, thereby improving the integrity and diversity of the guqin in musical expression.

[0030] Compared to existing technologies, this application, through the independent design of three guqin (a seven-stringed zither), allows the bass guqin to provide a deep and mellow bass foundation, the mid-range guqin to maintain the traditional serene and ancient tone of the guqin, and the treble guqin to provide a bright and lively high-pitched effect. This enables each guqin to fully express its unique tonal characteristics within its respective range. The three guqin can be flexibly combined according to the needs of different musical works, allowing for solo, ensemble, and duet performances. The combined use of the three guqin not only allows the performer to fully utilize their technical advantages but also better creates the profound, ethereal, and far-reaching artistic conception unique to guqin music, enabling listeners to more fully experience the unique charm of guqin music.

[0031] In some embodiments, see Figure 4 , Figure 5 The resonating cavity 104 is provided with a resonating plate 103, which divides the resonating cavity 104 into an upper cavity 105 and a lower cavity 106 from top to bottom. The resonating plate 103 is provided with a tone hole 1031 that connects the upper cavity 105 and the lower cavity 106.

[0032] Correspondingly, a resonance plate 103 is installed inside the resonance cavity 104, dividing the resonance cavity 104 into an upper cavity 105 and a lower cavity 106. A sound hole 1031 is provided on the resonance plate 103 to connect the upper cavity 105 and the lower cavity 106. When the string 11 vibrates and produces sound, the sound first resonates in the upper cavity 105, then is transmitted to the lower cavity 106 to form a secondary resonance, and then is transmitted out of the body 10 from the dragon pool 1021 and the phoenix pond 1022. This dual-cavity resonance method makes the sound travel a longer path within the resonance cavity, the vibration more complete, and enhances the depth and thickness of the sound, making the guqin's tone more mellow, full, and layered, while also making the guqin's volume louder.

[0033] In some embodiments, see Figure 4 , Figure 5 The resonant cavity 104 is provided with a positioning groove 1041, and the edge of the resonant plate 103 is engaged in the positioning groove 1041.

[0034] Correspondingly, by setting a positioning groove 1041 in the resonance cavity 104 and locking the edge of the resonance plate 103 in the positioning groove 1041, it is not only possible to ensure that the installation of the resonance plate 103 in the resonance cavity 104 is more stable and precise, but also to ensure that the resonance plate 103 will not shift or shake during vibration, thereby ensuring the stable propagation and uniform distribution of sound in the resonance cavity 104.

[0035] In some embodiments, see Figure 4 , Figure 5 The body 10 includes a top plate 101 and a back plate 102 fitted below the top plate 101. A resonance cavity 104 is formed between the top plate 101 and the back plate 102, and a positioning groove 1041 is provided between the mating surfaces of the top plate 101 and the back plate 102. The top plate 101 is responsible for vibrating and producing sound, and is usually made of softer wood, such as paulownia or cedar. The strings 11 are located above the top plate 101, and an upper cavity 105 is formed between the top plate 101 and the resonance plate 103. The back plate 102 is responsible for vibrating and reflecting sound, and is usually made of wood slightly harder than the top plate 101, such as catalpa. A soundhole 1021 and a soundboard 1022 are located on the back plate 102, and a lower cavity 106 is formed between the back plate 102 and the resonance plate 103. A top post 107 and a bottom post 108 are supported between the top plate 101 and the back plate 102.

[0036] Correspondingly, by placing the positioning groove 1041 between the mating surfaces of the panel 101 and the base plate 102, not only can the installation position of the resonating plate 103 be more precise and secure, but the spatial structure of the resonating cavity 104 can also be fully utilized, making the resonating plate 103 tightly bonded to the inner wall of the resonating cavity 104. This reduces energy loss caused by structural loosening or gaps during sound propagation, enhances the resonance effect, simplifies the installation and disassembly process of the resonating plate 103, facilitates the maintenance and replacement of the resonating plate 103, and improves the maintainability of the guqin 1.

[0037] In some embodiments, the tone hole 1031 is staggered from the pool 1021 and the phoenix pond 1022. Correspondingly, by staggering the tone hole 1031 from the pool 1021 and the phoenix pond 1022, sound propagating within the resonance cavity 104 does not escape directly from the pool 1021 or the phoenix pond 1022, but rather undergoes multiple reflections and diffusions. This further enhances the sound wave vibration and energy accumulation within the resonance cavity 104, improving the resonance effect and resulting in a richer and fuller timbre. The staggered arrangement also effectively reduces the standing wave effect within the resonance cavity 104, avoiding timbre distortion or excessive intensity at certain frequencies caused by standing waves. This further improves the purity and stability of the guqin's sound quality, making the guqin's timbre more beautiful and harmonious.

[0038] In some embodiments, see Figure 4 , Figure 5 The bottom surface of the body 10 is a downward-protruding arched structure. Specifically, the bottom surface of the base plate 102 is also a downward-protruding arched structure. Correspondingly, the arched structure alters the vibration mode and resonance characteristics of the base plate 102, allowing it to form multiple distinct vibration zones during vibration, thus generating richer harmonic components. This richness of harmonics makes the guqin's tone more three-dimensional, delicate, and layered, enhancing the expressiveness and emotional impact of the music. Furthermore, the arched structure optimizes the internal spatial distribution of the resonance cavity 104, making the sound propagation path within the resonance cavity 104 more complex and diverse, further improving the resonance effect. Simultaneously, the arched structure enhances the overall structural stability of the body 10, making it more robust and durable when subjected to the tension of the strings 11 and external forces during performance.

[0039] In some embodiments, see Figure 2 , Figure 3 The top surface of the body 10 is provided with a bridge 12 near its head. The bottom surface of the body 10 is provided with a goose foot assembly 13 and several tuning mechanisms 14. The number of tuning mechanisms 14 is consistent with the number of strings 11 and corresponds one-to-one. One end of the string 11 passes around the tail end of the body 10 and is connected to the goose foot assembly 13. The other end of the string 11 passes around the bridge 12 and is connected to its corresponding tuning mechanism 14.

[0040] Correspondingly, the bridge 12 provides a stable support point for the string 11, ensuring that the string 11 maintains accurate tension and position during vibration, thereby guaranteeing the stability of pitch. The goose-foot assembly 13 is located on the bottom surface of the body 10, providing a firm fixing point for one end of the string 11. The tuning mechanism 14 is located on the bottom surface of the body 10, connecting to the other end of the string 11 to adjust the tension of the string 11. By matching the number of tuning mechanisms 14 with the number of strings 11, each string 11 can be independently adjusted for tension, allowing the player to quickly and accurately adjust the pitch as needed, ensuring that the guqin maintains optimal pitch during performance.

[0041] In some embodiments, see Figure 6 The goose-foot assembly 13 may include two goose-foot 131s, which are fixed to the bottom of the base plate 102 and located between the dragon pool 1021 and the phoenix pond 1022. The two goose-foot 131s are spaced apart along the width direction of the base plate 102. One end of four strings 11 is overlapped and wrapped around one of the goose-foot 131, and one end of the other three strings 11 is overlapped and wrapped around the other goose-foot 131.

[0042] Although the goose-foot assembly 13 of the above embodiment has a simple structure, when a certain string 11 needs to be replaced, it is necessary to remove the other related strings 11 wrapped on the same goose-foot 131 together, which is time-consuming, laborious and complicated in operation.

[0043] To facilitate the replacement of the string 11, in some embodiments, see [link to relevant documentation]. Figure 7 The goose-foot assembly 13 includes two goose-foot 131 connected to the bottom surface of the instrument body 10 and a fixing rod 132 connected between the two goose-foot 131. The string 11 is connected to the fixing rod 132. Specifically, both ends of the fixing rod 132 are fixedly connected to the two goose-foot 131 respectively.

[0044] Correspondingly, by setting the fixing rod 132, one end of each of the seven strings 11 can be connected at intervals along the axial direction of the fixing rod 132, avoiding the situation where multiple strings 11 are tangled together. Each string 11 can be fixed independently and orderly on the fixing rod 132, so that adjacent strings 11 do not interfere with each other. When it is necessary to replace a certain string 11, there is no need to disassemble the other strings 11; only the string 11 needs to be replaced. This structure greatly reduces the steps and time required for replacing strings 11, reduces the risk of damage to other strings 11 caused by replacing a string 11, and also reduces the workload of the performer or maintenance personnel, making the maintenance of the guqin more efficient, time-saving, and labor-saving.

[0045] In some embodiments, the tuning mechanism 14 may include tuning pegs and a loop connected to the tuning pegs. The tuning pegs contact the bottom surface of the instrument body 10, and the loop passes through the string eye 109 on the instrument body 10 and connects to the string 11 that passes around the bridge. When tuning, the length of the loop is adjusted by rotating the tuning pegs to tighten or loosen the string.

[0046] The tuning mechanism 14 in the above embodiment fixes the tuning pegs by the friction between the end face of the tuning peg and the bottom face of the instrument body. However, as the number of uses increases, the two become increasingly smooth. In addition, the reaction force generated when twisting the cord can easily cause slippage and string slippage.

[0047] To prevent slippage and string misalignment, in some embodiments, see [link to relevant documentation]. Figure 8 , Figure 9 The tuning mechanism 14 includes a mounting frame 141 on the bottom surface of the instrument body 10. The mounting frame 141 has a pin 142 that rotates around its own axis and an operating lever 143. One end of the pin 142 has a worm gear 144, and one end of the operating lever 143 has a worm 145 that is connected to the worm gear 144. The string 11 is connected to the pin 142 and wound around it. For example, the mounting frame 141 of the seven tuning mechanisms 14 can be a single-piece structure. The pin 142 can have a string fixing hole 1421. One end of the string 11 passes over the bridge 12, through the string eye 109, and is inserted into the string fixing hole 1421, thus achieving a fixed connection between the string 11 and the pin 142. Of course, other connection methods can also be used between the string 11 and the pin 142, which are not specifically limited here.

[0048] When tuning is required, simply control the operation lever 143 to rotate. The operation lever 143 drives the worm gear 145 to rotate, the worm gear 145 drives the worm wheel 144 to rotate, and the worm wheel 144 drives the pin 142 to rotate, thereby winding the string 11 onto the pin 142 or releasing the string 11 from the pin 142, thus adjusting the tension of the string 11.

[0049] Correspondingly, the transmission structure consisting of a worm gear 144 and a worm 145 makes the tuning operation more precise and stable. When the operating lever 143 rotates, it can precisely control the rotation angle of the pin 142, thereby achieving fine-tuning of the string tension. This helps the player quickly and accurately adjust the pitch of each string, ensuring the stability of the intonation. Because the worm gear transmission has self-locking properties, it can prevent the strings from loosening or slipping during use, reducing intonation deviations and tone quality degradation caused by loose strings.

[0050] See Figure 8Two adjacent operating levers 143 are respectively arranged on both sides of the fixed frame 141. Accordingly, by arranging two adjacent operating levers 143 on both sides of the fixed frame 141, the layout of the tuning mechanism 14 is made more compact, avoiding mutual interference and wasted space between the operating levers 143, and providing more space for the installation of other components.

[0051] Driven by a deep love and unwavering pursuit of guqin music, the inventors of this application, through years of dedicated research and tireless exploration, successfully invented the aforementioned two innovative guqin. This innovation significantly expands the guqin's tonal range, particularly the bass guqin, whose lowest note can reach the bass range of a violin and even the last note of the second octave of a piano. Its rich and deep tone not only fills the long-standing gap in the field of folk music lacking bass support but also opens up entirely new artistic spaces for folk music composition and performance. With the addition of the bass guqin, the harmonic layers of folk music become richer, the melodic expression more three-dimensional, and the overall musical expressiveness and artistic appeal are greatly enhanced.

[0052] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A guqin musical instrument, characterized in that, The invention includes three guqin (1), each guqin (1) including a body (10) and strings (11) located above the body (10). The body (10) has a resonating cavity (104), and the bottom of the body (10) has a dragon pool (1021) and a phoenix pond (1022) connected to the resonating cavity (104). The effective string lengths of the three guqin (1) are 1260-1308mm, 1120-1140mm and 680-700mm respectively. The resonating cavity (104) is provided with a resonating plate (103), which divides the resonating cavity (104) into an upper cavity (105) and a lower cavity (106) from top to bottom. The resonating plate (103) is provided with a sound hole (1031) that connects the upper cavity (105) and the lower cavity (106).

2. The guqin musical instrument according to claim 1, characterized in that, The effective string lengths of the three guqin (1) are 1280mm, 1130mm and 690mm respectively.

3. The guqin musical instrument according to claim 1, characterized in that, The resonance cavity (104) is provided with a positioning groove (1041), and the edge of the resonance plate (103) is engaged in the positioning groove (1041).

4. The guqin musical instrument according to claim 3, characterized in that, The body (10) includes a front panel (101) and a back plate (102) fitted below the front panel (101). The resonance cavity (104) is formed between the front panel (101) and the back plate (102). The positioning groove (1041) is located between the mating surfaces of the front panel (101) and the back plate (102).

5. The guqin musical instrument according to claim 3 or 4, characterized in that, The sound hole (1031) is staggered with the dragon pool (1021) and the phoenix pond (1022).

6. The guqin musical instrument according to claim 1, 2, 3 or 4, characterized in that, The bottom surface of the body (10) is a downward-protruding arch-shaped structure.

7. The guqin musical instrument according to claim 1, 2, 3 or 4, characterized in that, The top surface of the body (10) is provided with a bridge (12) near its head end. The bottom surface of the body (10) is provided with a goose foot assembly (13) and a number of tuning mechanisms (14). The number of tuning mechanisms (14) is consistent with the number of strings (11) and corresponds one-to-one. One end of the string (11) passes around the tail end of the body (10) and is connected to the goose foot assembly (13). The other end of the string (11) passes around the bridge (12) and is connected to its corresponding tuning mechanism (14).

8. The guqin musical instrument according to claim 7, characterized in that, The goose foot assembly (13) includes two goose feet (131) connected to the bottom surface of the body (10) and a fixing rod (132) connected between the two goose feet (131), and the string (11) is connected to the fixing rod (132).

9. The guqin musical instrument according to claim 7, characterized in that, The tuning mechanism (14) includes a fixed frame (141) on the bottom surface of the body (10). The fixed frame (141) is provided with a pin (142) that rotates around its own axis and an operating lever (143). One end of the pin (142) is provided with a worm gear (144), and one end of the operating lever (143) is provided with a worm (145) that is connected to the worm gear (144) for transmission. The string (11) is connected to the pin (142) and wound around the pin (142).

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