Excuse me, what is the function of the erhu s jack line?

Qianjin is a huqin.

A part that is unique to musical instruments. It is tangent to the effective chord length of the erhu.

At one point, it makes the starting point of the erhu vocal range and the base point for determining the pitch of the erhu, and also has the role of adjusting the vocal range, timbre and volume. Qianjin is the contact body of auxiliary erhu conduction and resonance, and the pronunciation process of erhu is analyzed: after the string is pronounced by horsetail friction, it is transmitted downward through the saddle to the barrel for main resonance resonance; Upwards through the first loop of the jack to connect the stem to assist resonance resonance, and then upwards through the shaft to form the second loop auxiliary resonance resonance.

Therefore, the jack plays an important role in the pronunciation of the erhu.

There are two main functions, one is to fix the strings, and the other is to cut the strings, cut the strings into two parts, the following is the performance part, the higher the gold line, the more corresponding positions, at the same time, due to the jack line, you can adjust up and down, you can adapt to the height of different people, the general jack line to the corresponding person's forearm length + the length of a palm is appropriate.

**The cotton yarn wax thread and the nylon wax thread in the story are the most common jack threads in our daily life, these two ** are cheap and more popular, but they do not talk about one of the best jack threads: silk jack thread. These three materials are sold as a jack string yuanzhen musical instrument.

Silk jack introduction:

Product name: silk erhu jack thread.

Material: silk, tough material.

Timbre characteristics: clear.

Renderings of silk jack strapping.

Strapping method: Figure 1:

Picture 2: Picture 3: The binding method of Hu Youhou Mountain Lao Weng of China Erhu Art Network is different:

My jack bundle is different, and I tie it around under the two strings. Introduced to Hu You today.

This benefit is threefold

1. There is a gap between the two strings and the ponytail is not clipped.

2. The vibration of the two strings interferes with each other very little.

3. Long-term use of thousands of pounds does not fall.

See schematic diagram: some other new erhu jacks.

Since the reform and opening up, there are many innovations about erhu jacks, such as double jacks, pitch shifting jacks, tactile jacks, all kinds of metal jacks and wood jacks, among which there are many desirable points, its common advantages are more durable than ordinary thread jacks, and there are also some advantages, which are very recommended, such as Yuanzhen's tactile jacks, which can improve the pronunciation of empty strings, and also overcome the phenomenon that the thread jacks are loosened after a period of time. Teacher Ma in the Northeast invented the pitch change jack, which plays an auxiliary role in helping beginners change tone. Loved by beginners.

Fixing the strings, as well as cutting the strings... Fixed without explanation, the string cutting is to divide the string into two parts, the higher the daughter, the more the erhu position, but it is also more difficult to master, beginners generally wrap the daughter relatively low... In addition, the lowest position is also determined by the daughter, so because of the height, the child should also be relatively low.

Dear, hello, 1, material selection: silk thread, pure wool Heng simple line as the first choice, silk thread sound is brighter, pure wool sound softer. 2. Use:

It is better to be cautious to tie it and not loosen it, and it is advisable to touch the strings for 3-4 turns. The distance between the string and the stem should be 16-20 mm, which can be determined according to the size of my hand, the fingers are longer and wider, and the fingers are shorter and narrower, so that the strings are comfortable for the appropriate distance. The distance from the jack line to the piano yard (piano yard **) is 38-42 cm, which can be determined according to the size of the hand.

The steps of tying the erhu jack thread are as follows:

1. Wrap the jack wire around a slipknot first.

2. Wrap a circle around the stem and strings.

3. After winding to the required number of circles, then go around the pole, pass through the slipknot circle and sell Zheng with a live joint.

4. Tighten the first slipknot.

5. Tighten the second slipknot from the jack.

6. Tie a dead knot and cut the thread.

7. Finally, if you adjust it, you will become a beautiful, hidden thread head brigade.

Although the erhu jack is a small accessory, it is another thing to be able to tie a thousand gold, it is cutting the effective chord length of the erhu.

At a point, the starting point of the erhu vocal range and the base point for determining the erhu pitch also have the role of adjusting the vocal range, the color of the reed, and the volume.

The binding method of the erhu jack thread is as follows:

Cut the appropriate length of the string and fold it in half evenly on the erhu string that has been fitted with strings.

Select one of them (inside and outside) as the line to sell to the short as the upside, and here the outside line is selected as the upward line.

The first step of the selected upward line is to wrap it around the stem and tighten it.

Wrap the upward line around the stem for one more week around the string, always tightening. Tease.

Repeat the previous action, the upward line first circles the stem, and then circles the strings, and the strings circle by rod, and repeats the cross mechanically.

Qianjin, also known as Qianjin, is a fixed and slippery shredding function of the erhu, and it will also have an impact on the accuracy of the sound. It is made of cotton thread, silk thread, plexiglass, plastic and other materials. It has a variety of forms, including a thousand catties of fixation, a thousand catties of wire, a thousand catties of metal, and the more common one is a kind of rope that winds a thousand catties.

The so-called erhu "thousand jin" is to wrap a piece of silk crack string or cotton thread around the stem and tie the strings together, and the position of the thousand jin is about 1 3 places between the upper string shaft and the barrel. The jack can be pushed up and down, and its biggest role is to adjust the effective length of the string, so that the limited length of the string is limited to the jack and the horse. Adjusting the height of the jack can adjust the pitch of the tone, which is very convenient for temporary pitch change during the performance.

In the development and evolution of the erhu, there are also many improvements in the thousand catties: 1. Fixed the thousand catties; 2. Adjustable fixed jack; 3. Double jacks, in addition to a fixed jack, this kind of jack also installs a movable jack under the fixed jack. This reform caused the erhu's vocal range to expand downward by four to five degrees.

At present, the erhu is usually tied with silk strings or cotton threads, which form the effective chord length of the erhu.

The upper tangent point. That is to say, the length of the string above the jack to the pinshaft is the invalid string length.

The string distance from the jack end to the end of the saddle is the effective string length of the erhu, according to the erhu art practice and the ergonomics of the sock chain.

and the structure and size characteristics of the human hand, the effective chord length of the standard erhu is: 38

42 cm, median is: 40 cm. The distance from the end of the jack to the stem and the width of the tie of the jack is: about centimeters. They are determined from person to person, mainly based on the length, size and distance of the fingers.

Depending on the characteristics, the key is to be able to play freely in the correct hand shape of the strings.

The change of the position of the jack will cause a change in the effective chord length, such as a change in the tension of the string under a certain standard pitch requirement; The vibrational pronunciation of the erhu will change accordingly.

When the effective chord length is: 40 cm, the timpani inner chord: ; Outer strings: At 440Hz (A1), the total tension of the two strings of the erhu: kg; (The tension of the inner chord is slightly greater than that of the outer chord).

If the saddle is 8 mm high, the angle of string pressure is about 168-170 degrees.

The total pressure of the strings through the saddle on the epithelial membrane is about: kg. (Excluding tuning pad micropressure).

The adjustment method of erhu jack is as follows:

1. First find the jack line, and then wrap the jack thread around a slipknot.

2. Make the slipknot with your hands, and then put the jack.

The rope is wound around the bar chord.

3. The jack wire is wound around the piano rod, and it needs to be wound several times. Then you need to make a few turns, then go around the pole, pass through the slipknot loop and make a slipknot by hand.

4. After that, the first slipknot is tightened.

5. Tighten the first slipknot and then tighten the second one from the jack gap.

6. After both knots are tightened, you can tie another knot.

7. Cut off the excess thread afterwards.

8. Then after adjustment, it becomes a jack with a hidden thread.

Answer: The distance between the erhu jack wire and the piano shaft is about 10cm.

The position of the kilogram is related to the average size of the Chinese hand. The average height is 40 cm. The adjustment of the material balance of the string, the diameter, the specific gravity, and the film are all based on the height of the jack of 40 cm.

Put your left elbow on the barrel and straighten your hand and carry your arm like a question, your arm is against the stem, open your palm, and the root of your little finger is the third stripe of your little finger, and the position of the stem is the position of the jack.

Material Required: Thousands of gold threads.

1. Cut the appropriate length of the line, and divide it into two on the erhu string that has been equipped with strings.

2. Select one of them as the upward line, and select the outer one here as the upward line.

3. The first step of the selected upward line is to wrap it around the stem and tighten it.

4. Wrap the strings around the upward line of the stem for another week, always tightening.

5. Repeat the previous action, the upward line first goes around the stem, then around the strings, around the rod and strings, and repeats mechanically.

6. Then the remaining appropriate length of the upward line, and the end of the line is inserted downward between the pole and line.

7. Then tighten the upward line below the head.

8. The effect after tensioning is shown in the following figure:

9. Finally, tie the two long threads in a knot, and the erhu Qianjin binding line is completed.

Place your forearm on the stem, your elbow on the barrel, and the first joint of your little finger is the position of the jack.

Wide and narrow fixation: one thumb width is guaranteed between the string and the stem.

Then tie it with a jack thread! It's about the same for ten or twenty laps. If you are very knowledgeable, you can go to the piano shop to learn from the masters. They are tied in a variety of ways, which are beautiful and practical.

If the material is used, it is good to use a rope. Wait for some more attention to go to the piano shop to buy that kind of professional jack wire.

Then use a tuner to compare the tone. The outer string is an a, and the inner string is d.

The adjustment of erhu thousand catties can be adjusted according to the size and level of the hand, and the position of the thousand catties of people with large hands is correspondingly higher.

Summary. The thickness of the erhu's jack strings (referring to the strings) is generally chosen according to personal preference and playing style. The thick strings are loud and rich, making them suitable for playing atmospheric, bold tracks, but they require a certain amount of strength and skill control.

The thin strings have a low volume and crisp tone, making them suitable for playing delicate, soft repertoire that requires greater skill and precision. Therefore, the thickness of the erhu jack should be decided according to your playing needs and skill level. Beginners can opt for relatively thin strings because they are soft to the touch and easy to control; More experienced players can choose strings of different thicknesses according to their personal preferences and needs to achieve better results.

The thickness of the erhu's jack strings (referring to the strings) is generally chosen according to personal preference and playing style. The thick strings of the stool bucket are loud and rich, and they are suitable for playing atmospheric and bold repertoire, but they require a certain amount of strength and skill control. Thin strings with low volume and crisp notes or polishes are suitable for playing delicate, feminine pieces that require greater skill and precision.

Therefore, the thickness of the erhu jack should be decided according to your playing needs and skill level. Beginners can choose relatively thin strings, because the relatively thin tuanjube strings feel soft and easy to control; More experienced players can choose strings of different thicknesses according to their personal preferences and needs to achieve better results.

1.The thickness of the jack wire affects the timbre of the instrument. The thinner the string, the softer the timbre, and the easier it is for the strings to be pulled out of tone; The thicker the string, the thicker the timbre, and the less likely the string is to be pulled out of tune.

2.Therefore, the thickness of the jack wire should be chosen according to the individual's needs and the performance of the instrument. If you are looking for a soft and delicate timbre, you can choose a thinner jack line; If you're looking for a deep tone and a hail difference, you can opt for a thicker jack line.

3.At the same time, it should be noted that a jack wire that is too thin or too thick may affect the sound quality and quality of the instrument, so you need to make a proper trade-off when purchasing. 4.

Finally, you should choose a jack wire that suits your skill level and erhu model to ensure smooth performance and excellent sound quality. Precautions: When purchasing erhu thread, don't only pay attention to the thickness of the thread, but also consider its material, strength, elasticity and other factors.

At the same time, there are also differences in quality and performance between different brands of jack threads, which need to be carefully selected. In addition, when correcting tonal problems, it is advisable to check the tuning of the erhu first, as the tonal problems may not be caused by the thickness of the jack wire.