二胡的结构（The structure of Erhu）
The structure of.Txt36 love is a ray of sunshine, let your mind even in the cold winter can feel the warmth of spring; love is a clear spring, let your emotions over the years even if the dust is still clear net. A piano, drum is sound box of the erhu, piano strings, support rod is connected to an important pillar of operation.
The erhu fiddle tube and piano, piano bar, headstock, shaft, Jack, bridge, and bow strings and other components, in addition to rosin appendages.
Piano cylinder is a resonance tube of the erhu, with mahogany, rowood or ebony, rowood or bamboo is also uful, in 70s and began to u low foaming molding materials (ABS). The shape of the main six square, 13 cm long, the hole diameter (8.8 cm on the edge). Round or square of eight is made in some areas. Tube slightly thin waist, tube mouth after open or open device have various styles of flower holes sound window. Jean cone to expand and render the role of string vibration.
Jean cone before mouth skin, called the harp, also called Qin film, it is an important device for Erhu sound. Universal type of Erhu skin, high-grade erhu is a python. Snake scales lines, lines arranged regularly, and full of toughness, but the texture is thin. The sound quality is easily affected by climate, t
emperature and other factors. Python stripe is thick and smooth, color contrast and coordination, proper thickness and elastic, not easy damage, with better development. The most ideal for Python and to anal area, the local ednic adaptability, stable performance and rich mellow pronunciation. Whether it
is to buy a new erhu or snake python, often empty with sand and pronunciation, and hold the upper and lower the volume of large difference. This is Jean vibration is not enough coordination becau of the need to go through a period of play after the vibration of piano is likely to gradually become the norm.
The bar is also called the "Piano column", is an important pillar for supporting the strings, according to string operation, a total length of 81 cm, the diameter is about 0.55 inches. The top of head, the upper part is provided with a two pin, the lower end is inrted into the canister. Qin head was bent neck, there are carved into the tap or other shapes. A pure measure of the erhu pronunciation and not have a great relationship with the bar material lection, usually regarded as top grade mahogany, ebony is also good, the other is inferior to a wood. Except when the choice material to carefully identify the bar outside, but also to clo texture. Wood ray fine and uniform, no day, no scar, no obvious cracks, there is a certain brightness.
Two, to adjust the pitch axis of Qin Erhu
The erhu has a pitch depends mainly on the shaft to adjust the piano.
The piano with the bar axis is perpendicular to the two cone like parts, wood, a small front, wearing a string hole, the middle back gradually, the largest. After the appearance of some axis engraved with straight petals, the shaft must be added, with multilayer bone and wood adhesive. With the canister relative, above a call Neiqin axis, tie string, down a call to
Qin axis, wherein. Inside and outside the shaft is about 0.26 feet away from the piano. Outside the wheelba is generally 1.45 piano piano cylinder feet, this is one of the significant signs of Erhu different from Hu, Hu, Gaohu, Banhu, Jinghu "Kin" instruments.
The traditional scroll is a whole, nano outer shaft are respectively inrted in the round hole horizontal piano bar above the specified in the corresponding string directly around the "exit" at the end of the end. This scroll tuning range, and can store the extra strings of gments, for fully utilizing the strings. But this scroll on the choice of materials is more elegant, more boxwood or yellow sandalwood is made, with the bar of the contact surface is necessary to maintain tight commissure, loo, or not hiding pole chord sound running risks, the operation is not natural.
At the beginning of 60s, the erhu device (also called straight screw pin, copper axis) can maintain the original appearance of the national form, but also overcome the twisting laborious, easy to run long strings and piano bar the shortcomings of crack damage. Now, on the sale of high-grade erhu, the piano for mechanical screw shaft axis.
Three, a buckle for Strings
The bar of the device on the strings is the daughter, daughter is generally made of copper or lead wire: "S" shaped hook, then Sixian or other end of the hook and rope caught in the bar, but also uful Sixian, nylon cloth, leather or directly tied to the strings on the piano bar. Behind this form the daughter of
the sound quality not very ideal, becau inside and outside the string is extrusion too clo to the full is by moving strings contain a certain degree, do not pay attention to but also prone to "touch the string" phenomenon.
The daughter can not is too long, nor is it too much, right depends on the extent of playing finger length and the thickness of the bar. That is to say, long fingers, the bar can be a fine appropriate to relax; short, thick finger bar on a tight action. Generally speaking, the width of the bar from the string
s to 0.7 inch or so more appropriate. In the bar the daughter position should obtain a generally fixed, not always move to move.
Some beginners love to pull the treble, daughter of a strength to move down. This "Treble" sound quality is poor, not only not conducive to the comprehensive training of transport means, but also detrimental to the normal pitch of the concept of culture. In general, the daughter should be fixed at about 1.3 feet from the bridge position is appropriate.
The bridge is four, connecting harp strings hub
The bridge is small, but it is the connection of piano strings hub. It is the function of the string vibration transmitted to the python skin. Therefore, the material, shape and position in the piano on the skin, has a great influence on the quality of erhu.
In order to improve the sound of the erhu, erhu pronunciation by Husky (i.e. with kraft paper or other paper hard roll into
a cylinder tightly, will em soft voice): pronunciation dull erhu to childhood, can make the sound more suitable for playing loud, lively light tunes, monotonous metal erhu pronunciation spring hor, can make the pronunciation become more sympathetic.
In addition, like sorghum straw, matches, sign (the best pencil refill removed) and other materials of the bridge can also improve some erhu sound quality, but in high-grade erhu or be with special Trojan, trojan is ud for wood, and small distortion soft tone. In addition to the wire hor, but rarely ud.
If you are making the bridge, should pay attention to the unique shape. It should not be too long, too short, too high, too low, becau this is not conducive to the performance of piano vibration. Although some hoar pronunciation erhu, appropriate growth qinma, quality can be improved to a certain extent, but the volume has been greatly weakened. In general, Qin Ma Long about 0.4 inches high, about 0.25 inches more appropriate. If the bamboo or wooden bridge, hollowed out into the best shape of arch bridge.
Five, to play the erhu bow
Bow by bow and bow hair, a total length of 76 cm, bow rod is supporting the bow hair, 2.4 feet in length, with Jiang Weizhu (also known as bamboo production, baking) at both ends of the corner, tied ponytail, bamboo thick tail end of the bow, Masson clip placed between two strings, with friction string pronunciation.
