A whole-section adjustable tone bamboo flute

Abstract

The present invention discloses a whole-section adjustable-pitch bamboo flute. The whole-section adjustable-pitch bamboo flute includes a flute tube, a tuning member, and a limiting and fixing member. The tuning member has a fixing plate and a baffle plate that are bent relative to each other. The fixing plate is connected to the flute tube, and the baffle plate is adapted to the inner wall at one end of the blowing hole and extends downward along the inner wall edge into the cavity of the flute tube. The limiting and fixing member is arranged on the flute tube to fix the fixing plate to the flute tube. By setting the bamboo flute as a whole-section type, the present invention can maximize the sound quality of the bamboo material and is not easily cracked. Secondly, by arranging a tuning member composed of a fixing plate and a baffle plate with relative bending at the blowing hole of the flute tube, the baffle plate extending into the blowing hole can guide the airflow direction into the cavity of the flute tube, and by adjusting the bending angle between the baffle plate and the fixing plate, the incident angle of the airflow entering the cavity of the flute tube is controlled, so as to achieve the purpose of adjusting the pitch of the bamboo flute, improve the performance effect, and the tuning member is fixed on the surface of the flute tube without damaging the bamboo flute body, ensuring the authenticity of the sound of the bamboo flute.

Description

Technical Field

[0001] The present invention relates to the field of musical instruments, and particularly to an entire-section adjustable bamboo flute. Background Art

[0002] The bamboo flute is a widely spread wind instrument in China. Since it is made of natural bamboo, it is also called the "bamboo flute". The bamboo flute has a wide spread area and a large variety. The most commonly used ones are the qudi, bangdi, fixed-tone flute, Yuping flute, seven-hole flute, piccolo, and shundi, etc. The Chinese bamboo flute has strong characteristics of the Chinese nation. Its pronunciation is emotional and gentle. The bamboo flute is an important melody instrument in the Chinese national orchestra, mostly used for solo and can also participate in ensemble.

[0003] The bamboo flute is made of a bamboo tube. The inside is hollowed out to form an inner cavity, and the outside is cylindrical. There are 1 blowing hole, 1 film hole, 6 sound holes, 2 fundamental tone holes, and 2 auxiliary tone holes on the tube body. The embouchure plug is a plug made of soft wood and is installed at a certain depth inside the tube at the upper end of the blowing hole. The blowing hole is the first hole at the left end of the flute body. The flute can produce sound by blowing air into the flute tube through the blowing hole, causing the bamboo reed inside the flute tube and the membrane to vibrate. The film hole is the second hole at the left end of the flute body, mainly used to stick the flute membrane. The flute membrane plays a role in changing the timbre here. The flute membrane is generally made of reed membrane. After being wrinkled, a small square is taken for use. Through the vibration of the air flow on the flute membrane, a clear and bright sound can be emitted. There are a total of six finger holes. By opening and closing these sound holes respectively, different pitches can be produced. The upper sound hole can be used to tune the pitch and plays a role in defining the lowest pitch range of the flute. The lower sound holes are two holes at the lower end of the upper sound hole, which can be used to tune the high pitch, play a role in beautifying the timbre and increasing the volume, and can also be used to tie the tassel. The sea bottom, also known as the head of the flute, is a section of the inner cavity of the flute body from the inner edge of the embouchure plug to the center of the blowing hole. It prevents the air flow from flowing upward, making the airstream flow downward and concentrating the sound. The binding thread is wound around the outside of the flute body to protect the flute body from cracking. The inlay is usually inlaid with ox bone, ox horn, or jade at the left end (or both ends) of the flute body, which is called the inlay.

[0004] When playing the bamboo flute, it is usually necessary to change different pitches to achieve the best playing effect. Most existing bamboo flutes cut the flute into two sections of bamboo tubes and adjust the total length of the two sections of bamboo tubes to adjust the pitch. However, due to temperature and humidity reasons in summer and winter, the pitch of the bamboo flute will be generally too high or too low. Therefore, the two sections of bamboo tubes are movably connected through a copper sleeve, and the interface form of the two sections of bamboo tubes is generally single-insert type or double-insert type. The interface copper tube of the single-insert type has only one layer. The inner wall is connected to the inner wall of the bamboo and serves as part of the flute. The outer wall is inserted into the copper tube at the head end of the flute. This structure is simple and convenient for repair, but air leakage may occur after long-term use, and the interface is prone to breakage. The double-insert type is through the mutual insertion of two layers of interface copper tubes. Although the problem of air leakage is solved, the interface will still break. Moreover, when the bamboo flute is divided into two sections of bamboo tubes with movable connection, since it is necessary to saw the bamboo and inlay a copper sleeve inside, it will cause greater damage to the bamboo tube itself, damage the sound of the bamboo flute, and have higher processing requirements. The processing process is also more cumbersome, increasing the scrap rate of the product and also increasing the cost of the product. Summary of the Invention

[0005] To solve the above technical problems, the purpose of the present invention is to provide a whole-section adjustable-pitch bamboo flute.

[0006] An embodiment of the present invention provides a whole-section adjustable-pitch bamboo flute, including a flute tube with a cavity inside. The flute tube is sequentially provided with a blowing hole, a film-pasting hole, finger holes, and a sounding hole. It is characterized in that the whole-section adjustable-pitch bamboo flute and its tuning member further include:

[0007] A tuning member, the tuning member has a fixed plate and a baffle plate that are bent relative to each other. The fixed plate and the baffle plate are thin metal sheets. The fixed plate is connected to the flute tube. The baffle plate is adapted to the inner wall of the blowing hole near one end of the film-pasting hole and extends downward along the inner wall edge into the cavity of the flute tube. The baffle plate is used to guide the direction of the airflow entering the cavity and adjust the incident angle of the airflow.

[0008] A limit fixing member, which is arranged on the flute tube and is used to limit and fix the fixed plate and the flute tube.

[0009] Preferably, the bending angle between the fixed plate and the baffle plate is 0° to 90°.

[0010] Preferably, the bending angle between the fixed plate and the baffle plate is 45°.

[0011] Preferably, the limit fixing member includes:

[0012] A threaded hole, which is arranged on the surface of the flute tube and is located between the blowing hole and the film-pasting hole;

[0013] An adjusting groove, which is arranged on the fixed plate and is correspondingly arranged with the threaded hole;

[0014] A fastener, one end of which sequentially passes through the adjustment groove and the threaded hole, and the other end is clamped above the fixing plate to fixedly connect the fixing plate and the bamboo flute tube.

[0015] Preferably, the tone-adjusting member is a metal sheet with high ductility.

[0016] The present invention also provides a tone-adjusting member, which comprises the following components by weight percentage:

[0017] 50% of 304 stainless steel, 40% of silver, and 10% of gold.

[0018] The present invention also provides a preparation method of the tone-adjusting member, which is characterized by comprising the following steps:

[0019] Step 1: Add stainless steel into a furnace and melt it at 1550 - 1750 °C until complete melting to obtain a molten liquid A;

[0020] Step 2: Add silver and gold into the molten liquid A, continue to melt at 1600 - 1800 °C for 30 - 60 min to obtain a molten liquid B, and inject the molten liquid B into a mold to cool to obtain an alloy ingot;

[0021] Step 3: Perform plastic deformation processing on the alloy ingot at 850 °C - 1000 °C, and the deformation amount is 75% - 85%;

[0022] Step 4: Anneal the alloy after plastic processing at an annealing temperature of 200 - 450 °C to obtain a metal plate with high ductility.

[0023] Preferably, the plastic deformation processing temperature of the alloy ingot in Step 3 is 920 °C.

[0024] Compared with the prior art, a whole-section adjustable bamboo flute provided by the present invention has a whole-section structure for the bamboo flute tube itself. Compared with the sectional structure with movable connection, its structure is more stable, and it has the advantages of smooth and sensitive sound production, pure tone, and good resonance, can maximize the sound quality of bamboo materials, and the whole-section bamboo flute tube is simple to manufacture. Moreover, compared with the two-section bamboo flute, when in use or maintenance, it needs to be frequently plugged and unplugged, resulting in easy loosening or cracking at the interface. This whole-section bamboo flute is easier to maintain, and due to the integrity of its structure, it is not easy to crack.

[0025] Secondly, the whole-section adjustable bamboo flute is provided with a tone-adjusting member composed of a fixing plate and a baffle with relative bending at the blowing hole of the flute tube. The baffle extending into the blowing hole can guide the direction of the air flow entering the cavity of the flute tube, and by adjusting the bending angle between the baffle and the fixing plate, the incident angle of the air flow entering the cavity of the flute tube can be controlled, so as to conveniently and quickly achieve the purpose of adjusting the pitch of the bamboo flute, improve the playing effect, not only overcome the problem that the existing whole-section bamboo flute cannot be tuned, but also overcome the problem that the pitch of the existing bamboo flute is too high or too low as a whole due to temperature and humidity in summer and winter. And the tone-adjusting member is fixed on the surface of the flute tube through a limit fixing member, and the tone-adjusting member can be fixed to the flute tube without cutting the flute tube body during installation, which not only ensures the stability of the overall structure of the bamboo flute, makes the resonance and timbre of the bamboo flute better, but also can tune the bamboo flute to adapt to different playing occasions.

[0026] In addition, in the present invention, two metal elements, silver and gold, are added to the manufacturing material of the tone-adjusting member. Since silver can improve the stability of the alloy and gold has good ductility, the obtained alloy can have high ductility and mechanical properties, and cracking of the tone-adjusting member can be avoided during large-deformation extrusion processing, which is convenient for subsequent processing processes such as rolling, forging, and plastic deformation, and the finally obtained thin metal sheet will not break after being bent multiple times; at the same time, both silver and gold have good reflectivity to sound. During the playing process, by changing the bending angle of the tone-adjusting member to adjust the shape of the blowing hole of the bamboo flute, and then changing the timbre of the bamboo flute, the timbre of the bamboo flute can be adjusted, so that the bamboo flute can have a variety of different timbres, thereby meeting the use requirements of the player. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0028] Figure 1 It is a three-dimensional structural schematic diagram of an embodiment of the present invention;

[0029] Figure 2 is Figure 1 the enlarged view of part A in

[0030] Figure 3 It is a planar structural schematic diagram of an embodiment of the present invention;

[0031] Figure 4Cross-sectional view of the connection structure between the flute tube and the tone adjuster according to the embodiment of the present invention (when the bending angle between the fixing plate and the baffle of the tone adjuster is 45°);

[0032] Figure 5 is Figure 4 Enlarged view of part B in;

[0033] Figure 6 Cross-sectional view of the connection structure between the flute tube and the tone adjuster according to the embodiment of the present invention (when the bending angle between the fixing plate and the baffle of the tone adjuster is 90°);;

[0034] Figure 7 is Figure 6 Enlarged view of part C in;

[0035] Figure 8 Three-dimensional structure diagram of the tone adjuster according to the embodiment of the present invention when the bending angle between the fixing plate and the baffle is 90°;

[0036] Figure 9 Three-dimensional structure diagram of the tone adjuster according to the embodiment of the present invention when the bending angle between the fixing plate and the baffle is 45°;

[0037] Figure 10 Flow chart of the preparation method of the tone adjuster according to the embodiment of the present invention.

[0038] Reference numerals

[0039] 1, Flute tube; 2, Tone adjuster;

[0040] 3, Limit fixing member; 11, Blowing hole;

[0041] 12, Film pasting hole; 13, Finger hole;

[0042] 14, Sound outlet hole; 15, Threaded hole;

[0043] 21, Fixing plate; 22, Baffle;

[0044] 31, Fastener; 211, Adjusting groove. Detailed implementation manners

[0045] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present invention.

[0046] It should be noted that: Similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0047] It should be noted that the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the inventive product is customarily placed during use. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 construed as a limitation on the present invention. In addition, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0048] In addition, terms such as "horizontal", "vertical", "hanging" do not mean that the component is required to be absolutely horizontal or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0049] In the description of the present invention, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "coupled" 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 or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0050] As Figures 1-3 shown, a whole-section adjustable-tone bamboo flute includes a flute tube 1 with a cavity inside. The flute tube 1 is successively provided with a blowing hole 11, a film-pasting hole 12, finger holes 13, and a sounding hole 14. The whole-section adjustable-tone bamboo flute and its tone-adjusting member further include:

[0051] A tone-adjusting member 2, the tone-adjusting member 2 has a relatively bent fixing plate 21 and a baffle plate 22. The fixing plate 21 and the baffle plate 22 are thin metal sheets. The fixing plate 21 is connected to the flute tube 1. The baffle plate 22 is adapted to the inner wall of the blowing hole 11 near one end of the film-pasting hole 12 and extends downward along the inner wall edge into the cavity of the flute tube 1. The baffle plate 22 is used to guide the direction of the air flow entering the cavity and adjust the incident angle of the air flow;

[0052] A limit fixing member 3, which is arranged on the flute tube 1 and is used to limit and fix the fixing plate 21 and the flute tube 1.

[0053] Among them, the tone-adjusting member 2 is a high-ductility metal sheet. The fixing plate 21 can be set as a long and thin metal sheet. The baffle plate 22 is connected to one end of the fixing plate 21 and is integrally formed with the fixing plate 21. Using the extensibility of the metal plate, the baffle plate 22 can be bent downward relative to the fixing plate 21.

[0054] Among them, the bending angle between the fixing plate 21 and the baffle 22 is 0° to 90°.

[0055] As a further preference, referring to Figures 4-7 , the bending angle between the fixing plate 21 and the baffle 22 is set to 90°, or can also be set to 45°.

[0056] Specifically, when the sound of the bamboo flute playing is too high, the bending angle between the fixing plate 21 and the baffle 22 can be adjusted to 90°, that is, the baffle 22 is in a 90° vertical state with the upper part of the blowing hole 11. At this time, the angle of the incident air flow entering the cavity of the flute tube 1 becomes smaller, and the pitch also becomes smaller. On the contrary, when the sound of the bamboo flute playing is too low, the bending angle between the fixing plate 21 and the baffle 22 can be adjusted to 45°, that is, the baffle 22 is in a 45° oblique angle state with the upper part of the blowing hole 11. At this time, the angle of the incident air flow entering the cavity of the flute tube 1 becomes larger, and the pitch also becomes larger.

[0057] In order to make the baffle 22 extending into the cavity of the flute tube fit closely with the inner wall of the blowing hole 11, the baffle 22 can be set to a shape adapted to the inner wall of the blowing hole 11 near the film pasting hole 12. For example, if the blowing hole 11 is a circular hole, the baffle 22 can be set to an arc shape adapted to the circular hole wall. The arc length of the baffle 22 can be set to be slightly less than 1 / 2 of the circumference of the blowing hole 11. Specifically, it can be designed according to the size and shape of the blowing hole 11, so that the baffle 22 is both easy to bend and can ensure that the baffle 22 can guide the air flow.

[0058] Among them, the limiting and fixing member 3 can be transparent tape, and the fixing plate 21 and the flute 1 are glued together through the transparent tape.

[0059] Of course, in order to make the tone adjusting member 2 and the flute tube 1 be connected more firmly, referring to Figures 3-9 , the limiting and fixing member 3 can include:

[0060] A threaded hole 15, which is arranged on the surface of the flute tube 1 and is located between the blowing hole 11 and the film pasting hole 12;

[0061] An adjusting groove 211, which is arranged on the fixing plate 21 and corresponds to the threaded hole 15;

[0062] A fastening member 31, one end of which sequentially passes through the adjusting groove 211 and the threaded hole 15, and the other end is clamped above the fixing plate 21 to fixedly connect the fixing plate 21 and the flute tube 1.

[0063] Among them, the fastening member 31 can be set as a hexagon head bolt with one end adapted to the threaded hole 15. When in use, first place the tone adjusting member 2 on the flute tube 1 and align the adjusting groove 211 with the threaded hole 15, and then screw the bolt into the adjusting groove 211 and the threaded hole 15 in sequence, then the fixing plate 21 and the flute tube 1 can be fixedly connected.

[0064] Furthermore, to facilitate the manual screwing of the bolt, the fastener 31 can be a ram's horn bolt.

[0065] The working principle of this embodiment is as follows:

[0066] Before playing, the player can first manually bend the baffle 22 to an appropriate angle and then install the tuning component 2 onto the flute tube 1. Of course, to conveniently and precisely adjust the bending angle of the baffle 22, the tuning component 2 can be first installed on the flute tube 1, and then a slender object such as a small knife or a pen holder is used to press the baffle 22 towards the fixed plate 21, reducing the bending angle between the baffle 22 and the fixed plate 21, increasing the incident angle of the airflow, so as to raise the pitch of the bamboo flute; or move the fixed plate 21 axially along the flute tube 1 towards the film pasting hole 12. At this time, the inner wall of the blowing hole 11 will push the baffle 22 outwards away from the fixed plate 21, increasing the bending angle between the baffle 22 and the fixed plate 21, reducing the incident angle of the airflow, so as to lower the pitch of the bamboo flute.

[0067] It can be seen that the integral adjustable-pitch bamboo flute provided by the present invention has an integral structure for the flute tube itself. Compared with the sectional flute tube with movable connections, its structure is more stable, with the advantages of smooth and sensitive sound production, pure timbre, and good resonance, being able to maximize the sound quality of bamboo materials. Moreover, the integral flute tube is simple to manufacture. And compared with the two-section bamboo flute, which is prone to loosening or cracking at the interface due to frequent plugging and unplugging during use or maintenance, this integral bamboo flute is easier to maintain and is not prone to cracking due to the integrity of its structure.

[0068] Secondly, this integral adjustable-pitch bamboo flute is provided with a tuning component composed of a fixed plate and a baffle with relative bending at the blowing hole of the flute tube. The baffle extending into the blowing hole can guide the direction of the airflow entering the cavity of the flute tube, and by adjusting the bending angle between the baffle and the fixed plate, the incident angle of the airflow entering the cavity of the flute tube can be controlled, enabling the pitch of the bamboo flute to be adjusted conveniently and quickly, improving the playing effect. It not only overcomes the problem that the existing integral bamboo flute cannot be tuned, but also overcomes the problem that the pitch of the existing bamboo flute is generally too high or too low due to reasons such as temperature and humidity in summer and winter. And the tuning component is fixed to the surface of the flute tube through a limit fixing component, and the tuning component can be fixed to the flute tube without cutting the flute tube body during installation, which not only ensures the stability of the overall structure of the bamboo flute, making the resonance and timbre of the bamboo flute better, but also enables the bamboo flute to be tuned to adapt to different playing occasions.

[0069] The present invention also provides a tuning component, which comprises the following components by weight percentage:

[0070] 50% of 304 stainless steel, 40% of silver, and 10% of gold.

[0071] The present invention also provides a method for preparing a tone-adjusting part, comprising the following steps:

[0072] Step 1: Add stainless steel to a melting furnace and melt it at 1550 - 1750 °C until complete melting to obtain a molten liquid A;

[0073] Step 2: Add silver and gold to the molten liquid A, continue melting at 1600 - 1800 °C for 30 - 60 min to obtain a molten liquid B, and inject the molten liquid B into a mold to cool to obtain an alloy ingot;

[0074] Step 3: Perform plastic deformation processing on the alloy ingot at 850 °C - 1000 °C, with a deformation amount of 75% - 85%;

[0075] Step 4: Anneal the alloy after plastic processing at an annealing temperature of 200 - 450 °C to obtain a metal plate with high ductility.

[0076] Among them, the plastic deformation processing temperature of the alloy ingot in Step 3 is 920 °C.

[0077] Compared with the prior art, by adding two metal elements, silver and gold, to the manufacturing material of the tone-adjusting part, since silver can improve the stability of the alloy and gold has good ductility, the obtained alloy can have high ductility and mechanical properties, and cracking can be avoided during extrusion processing with a large deformation amount, which is convenient for subsequent processing processes such as rolling, forging, and plastic deformation. Moreover, the finally obtained thin metal will not break after being bent multiple times; at the same time, both silver and gold have good reflectivity to sound. During the playing process, by changing the bending angle of the tone-adjusting part to adjust the shape of the blowing hole of the bamboo flute, the tone of the bamboo flute can be changed, thereby realizing the adjustment of the tone of the bamboo flute, enabling the bamboo flute to have multiple different tones, and thus meeting the usage requirements of the player.

[0078] It should be noted that in this article, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such process, method, article or device.

[0079] In this text, specific examples are used to elaborate on the principles and implementation modes of the present invention. The description of the above examples is only for helping to understand the method of the present invention and its core idea. The above is only the preferred implementation mode of the present invention. It should be noted that due to the limitation of literal expression and objectively there are infinite specific structures. For those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements, retouches or changes can be made, and the above technical features can also be combined in an appropriate manner; these improvements, retouches, changes or combinations, or directly applying the concept and technical solution of the invention to other occasions without improvement, shall all be regarded as the protection scope of the present invention.

Claims

1. An adjustable bamboo flute in one piece, comprising a flute tube (1) with a cavity inside, wherein a blowing hole (11), a film pasting hole (12), finger holes (13) and sounding holes (14) are successively arranged on the flute tube (1), and it is characterized in that, This whole-section adjustable bamboo flute further includes: A tuning member (2), the tuning member (2) having a relatively bent fixing plate (21) and a baffle plate (22). The fixing plate (21) and the baffle plate (22) are thin metal sheets. The fixing plate (21) is connected to the flute tube (1). The baffle plate (22) is adapted to the inner wall of the blowing hole (11) near one end of the film pasting hole (12) and extends downward along the inner wall edge into the cavity of the flute tube (1). The baffle plate (22) is used to guide the direction of the air flow entering the cavity and adjust the incident angle of the air flow. A limit fixing member (3), provided on the flute tube (1), for limiting and fixing the fixing plate (21) and the flute tube (1). The limit fixing member (3) includes: A threaded hole (15), provided on the surface of the flute tube (1) and located between the blowing hole (11) and the film pasting hole (12). An adjustment groove (211), provided on the fixing plate (21) and corresponding to the threaded hole (15). A fastener (31), one end of which sequentially passes through the adjustment groove (211) and the threaded hole (15), and the other end is clamped above the fixing plate (21) to fixedly connect the fixing plate (21) and the flute tube (1). The tuning member (2) is a metal sheet with high ductility.

2. The whole-section adjustable tone bamboo flute according to claim 1, wherein The bending angle between the fixing plate (21) and the baffle plate (22) is 0°-90°.

3. The whole-section adjustable bamboo flute according to claim 2, characterized in that, The bending angle between the fixing plate (21) and the baffle plate (22) is 45°.

4. A tone-adjusting member as described in claim 1, characterized in that, The tuning member includes the following components by weight percentage: 50% of 304 stainless steel, 40% of silver, and 10% of gold.

5. A preparation method of a tone adjusting member as described in claim 4, characterized in that, It includes the following steps: Step 1: Add stainless steel to a melting furnace and melt it at 1550-1750 °C until complete melting to obtain a molten liquid A. Step 2: Add silver and gold to the molten liquid A, continue melting at 1600-1800 °C for 30-60 min to obtain a molten liquid B, and inject the molten liquid B into a mold to cool to obtain an alloy ingot. Step 3: Perform plastic deformation processing on the alloy ingot at 850 °C - 1000 °C, and the deformation amount is 75% - 85%. Step 4: Anneal the plastically processed alloy at an annealing temperature of 200-450 °C to obtain a metal plate with high ductility.

6. The preparation method of the tone-adjusting member according to claim 5, characterized in that, In Step 3, the plastic deformation processing temperature of the alloy ingot is 920 °C.

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