It was like this when I first started learning erhu. There will always be some mistakes, so what should I do? Next, I will introduce you to the misunderstandings in the use of erhu strings?

Misunderstandings in the use of erhu strings and their correction methods

One of the misunderstandings in the use of erhu strings is that the erhu strings will not be changed continuously. This view is wrong. The wrong basis is actually said before. The reason is that the erhu strings are worn out, the erhu strings are fatigued, the diameter of the erhu strings has become thinner, and the erhu strings have become thinner. The rhythm and sound effects of the strings are destroyed, so the erhu strings have to be changed constantly at some point.

The second misunderstanding in the use of erhu strings is that which one is broken and which one should be replaced. This view is also unscientific. There are strict regulations on the performance and thickness of new strings. Changing one without changing one is more damaging to the fifth.

Therefore, for the use of erhu strings, it is necessary to emphasize a word that everyone has turned a blind eye to. This is the phrase "the lifespan of erhu strings is 2-3 months" written on the erhu string packaging bag, and even "The erhu strings that are pulled hard" are added. Change frequently."

Summarize

1. The erhu string is the protagonist of the erhu sound. The manipulation ability of the erhu string determines the level of the erhu.

2. Erhu strings have strict requirements on the relationship between thickness, performance and rhythm. If you want to play erhu well, you must first choose a pair of good quality erhu strings. We recommend Honglong and Yuanzhen's erhu strings, which are the best in erhu strings. The performance of erhu strings will change due to wear and repeated tuning, the intensity, rhythm relationship and sound effect will deteriorate, the effect of erhu playing will become worse, and the difficulty of erhu control will increase. To master the life of erhu strings Period and replacement frequency, timely replacement of erhu strings, to maintain good performance of erhu strings. Some professors of music colleges suggest that professionals should generally replace them in three months, and the tension of the erhu strings will be greatly reduced in three months. affect the sound performance.

3. It is necessary to overcome the misunderstanding of irregular replacement of erhu strings or unpaired replacement.

How to use the inner and outer strings of the erhu

According to the usual force habit analysis, the outer string should be thick, because the outer string is tightened tightly, and the force is large, but if the vibration and acoustics are taken into account, the result is the opposite, because the thick inner string vibrates slowly and the sound is low, so the erhu The thickness of the outer and inner strings is not determined by the size of the force, but by the principles of vibration and acoustics. There should also be strict regulations on the thickness of the inner and outer strings of erhu strings, which should be determined according to the characteristics of erhu tuning (perhaps considering the characteristics of general DA tuning), which also determines that erhu strings and strings of other musical instruments generally cannot be used interchangeably (There are also comprehensive considerations in terms of erhu string length, etc.). In addition, the inner and outer strings of the erhu should also be designed according to the relationship of fifths. We have also discussed the issue of the span of the inner and outer strings of the erhu, such as the 4th or 7th degree. I think that if we tune the erhu not according to the fifth, maybe It is necessary to use different erhu inner and outer strings (this is just an assumption, not verified).

Regarding the performance of erhu strings, there should be many requirements for indicators, such as tensile strength, elongation, section shrinkage, fatigue strength, internal stress, rust prevention, wear resistance, etc. Although these performance requirements are the design and manufacture of erhu strings Things that must be controlled in the process, but those of us who play erhu also need to know that these properties will change during the use of erhu strings. In particular, we must know that the destruction of erhu strings will have a direct and important impact on the performance of erhu.

First of all, the erhu strings will wear out. The essence of the erhu sound is the friction between the bow hair and the erhu string. Therefore, the wear of the erhu string is inevitable. After the erhu string is worn, it will change the cross-sectional area of the erhu string, and also change the erhu and bow hair. The contact surface, further reasoning, the wear of the inner and outer strings of the erhu is unbalanced (there are reasons for the frequency of pulling the inner strings, and there are also reasons for the thickness of the strings, etc.), this kind of wear or unbalanced wear and tear will cause two consequences, one is Destroy the original design of the erhu tuning or the rhythm relationship between the inner and outer strings of pure fifths. Second, the change of the friction surface between the bow and the string makes the sound effect worse (wear makes the friction between the bow hair and the string extremely unbalanced).

Secondly, erhu strings will become thinner or broken. The design of erhu strings has requirements for tensile strength and fatigue strength, as well as elongation indicators. However, wear and repeated tuning of erhu strings will change these performance indicators. There are two results. , One is broken strings. When you participate in a very grand and grand solo performance, you must check whether your strings have been used for a long time. The strings that have reached the limit of tensile strength or fatigue may be broken during your regular performance. This is very Embarrassing if you don't pay attention to this, but also your own fault. On the other hand, the strings will extend and thin after repeated debugging, which is the most difficult to notice and easy to overlook. There is a phenomenon: the inner and outer strings are coordinated but the pitch is inaccurate, and the intonation but the inner and outer strings are not coordinated), because the thinner strings will affect your tuning and tuning, and even affect your finger-pressing habits. In one sentence, That is, the pitch of your erhu will be difficult to control.