Generally, the newly produced erhu has a relatively tight leather, and the purchased erhu needs to go through the tuning process. Therefore, the newly purchased erhu usually needs to be played and run-in, not only the python skin is opened, but the strings, barrels, skins, and stems of the erhu are all in the running-in period. After a long time of playing, the whole erhu will be produced resonance resonance. The following is the specific method of opening the new erhu for everyone.

1. Because the skin of the new erhu has not been subjected to vibration, the force amplitude of the hexahedral angle is not uniform, and the sound produced is not so pure, and there will be noise. This piano skin is covered with six sides and tension after soaking, and has different tightness to the north and south, because the humidity of the climate in the north and south is different.

1. The erhu skin with a dull sound, the skin is too thin and loose, it will make a dull sound when the skin is soft on cloudy days, and it will make noise when it is tight on dry days, and the sound is impure. After playing such a piano, if the sound is still not good, you should pay attention to the change of climate. When the climate is dry, put the piano into the piano box and put a wet sponge in the piano box to preserve the humidity of the piano skin. ; The climate and humidity are too high. After playing the piano, put it into the piano box in time, and put some desiccant on the piano box.

2. The parts of a good erhu skin are well selected and symmetrical. One is the alignment of the scales and corners, and the other is the balance of tension. A good erhu master pays attention to this symmetrical workmanship. The code is installed in the center, and the pressure of the strings during the playing will apply force to the skin through the code, so that the skin is evenly stressed. This kind of piano opens quickly and has a pure timbre.

Second, it is necessary to apply pressure to the strings at ordinary times, and repeatedly press the strings appropriately for dozens of times every day, and pay attention to the up and down fluctuations of the skin. Just don't be afraid that the new erhu will not be on tone, and you should train with a full set of pressing strings. You should pay attention to loosening the strings so that they are flexible. Another is, after the new erhu is brought back, adjust the strings, put the back half of the barrel on your thigh, hold the piano rod with your right hand and press it down a few times, so that the piano rod and the piano barrel are firmly connected. This is correct. The overall resonance of the erhu is better.

Third, the new piano generally does not loosen the strings, which can help the erhu to open the sound, but it is necessary to loosen the strings in time after the sound is opened. The specific operations are as follows:

1. Adjust the strings of the new erhu, and you don't need to loosen the strings after playing. This is very helpful for the opening of the new erhu, but you should pay attention to placing the bridge in the center of the piano skin. Put a damp sponge in a slightly damp place, or put a damp sponge in the piano case, so that the strings will put pressure on the saddle, and the saddle will press on the center of the skin, and the hexahedrons of the skin will be affected by humidity and pressure. Under the circumstance, its elastic force will become uniform, and its vibration amplitude will be uniform when the elastic force is uniform.

2. Although not loosening the strings can help the erhu open, but the time should not be too long. After a few months, the strings will be loosened (depending on the effect of your own erhu opening), otherwise it will cause the center of the piano skin under the bridge If the points collapse or the column bends sideways, the skin loses its elasticity, which makes the string tension too large and loses its toughness, which has an impact on the vibration frequency. The quality of the erhu is good or bad. This resonance wave is an important part of how much the erhu produces overtones.

The sound of Erhu will be rich, mellow and transparent only after it has been turned on, so don't be impatient when the sound of Erhu is turned on, you have to play it patiently, and it will give you a pure sound after a year and a half.