In fact, the new erhuzhi has not been used since it was produced. The hexagonal surface of the piano skin is not uniformly stressed, and the amplitude of the piano skin is affected, so the pronunciation will be somewhat affected. The period during which the new erhu is in use is called "open tone".

The following will explain the principle of erhu pronunciation and the method of opening the new erhu.

1. Erhu piano skin

The most critical sounding body of the erhu is the piano skin, which is like the horn in the radio. The sound, sound quality and resonance of the horn depend on the flexibility of the cone and the apron, the strength of the magnetic core, and the voice coil. The movement of the device determines the sound effect. The sound quality and volume of the erhu depends on the skin. A good skin needs to be processed by an experienced master so that the six sides of the skin can be evenly stressed and have good resonance.

The fibers of the piano skin cannot be arranged in the same way, so just try to choose a good part to eliminate some deficiencies, which is why the price of good erhu is on the high side. A high-quality erhu is not only of fine wood, but also very particular about the selection of leather. For the selection of skins, the skin on the spine and back within one meter forward of the anus of the python should be selected, because the texture of the skin in this part is uniform, mainly because the skin of the python has not been torn when the python is swallowing larger food. Therefore, the skin of this part is an ideal material, and the erhu produced with it has a relatively uniform pronunciation.

2. the production process of erhu

In the process of making the erhu, the skin of the erhu was soaked with water to soften it before skinning. Now, when the erhu is pulled by a screw, the skin is much tighter, which greatly increases the resonance frequency. The skin is also very important. A little carelessness will cause uneven force on the hexahedral corners of the piano skin, which will affect the pronunciation in the future. The sound quality of the erhu depends on the skin of the piano. The sound quality of the new erhu will be a little unpleasant to the ear. The problem is that the shrinking and pulling of the piano skin after drying is not uniform. And resonance, as long as the resonance wave is blocked, its overtones are few and impure, so the new erhu must go through the opening tone.

3. The method of opening the new erhu

The newly bought erhu does not need to take off the saddle or loosen the strings after playing, because the skin of the new erhu is stressed on six sides, and the balanced resonance generated by its uniform force is still not enough. Pressure, this pressure comes from the pressure on the piano skin by the bridge, so that the piano skin is slowly and evenly stressed, so as to achieve resonance resonance, which is called open sound. By pulling often and having kung fu on the hands, if the child has no strength on the hands, please ask the teacher to use it for a while and the voice will start earlier. In fact, it is the chord pressure effect. So try not to loosen the strings and take off the bridge when the new erhu is on the strings. It is best to place the piano saddle in the center of the piano so that the six sides of the piano skin are evenly stressed. It's okay to play dora often. Insist on centering the saddle before playing the piano every day, hold the strings moderately with your left hand for dozens of times, so that the skin of the piano fluctuates with the saddle. After about three months of pulling, the fibers of the skin will be evenly arranged radially to the saddle. , which is also the principle of the speaker. The other is that before buying a new piano and trying it out, place the back half of the piano barrel on your thigh, and hold the piano rod with your left hand and press it down a few times. The reason for this is to make the inlay of the piano rod and the piano barrel more solid, and fully achieve the effect of resonance resonance and resonance resonance.

When buying an erhu, try to choose a high-quality erhu. No matter how much you turn on the erhu, the sound quality will not be good. Thank you all for reading!