Hulusi is a very fragile musical instrument, so you must pay attention to its maintenance during use. Its maintenance is as long as the maintenance of the pronunciation reed, especially the maintenance of the main reed.

1. The maintenance of cucurbit silk

The cucurbit silk produces sound through the vibration of its own reeds and the resonance of the bamboo pipe, so the root of the reeds of the cucurbit is thin and the vibration it can withstand is limited. To have some control, just play at a normal volume. Many students who are just learning cucurbit flute, some can play very lightly and cannot make a normal sound, while others are too hard, resulting in distortion of the sound range, unable to pronounce in the middle and high range, especially the bass 567 everyone will play very hard. , Yes, the bass area is more forceful than the middle and high tone area, but if the breath strength exceeds the strength required by the normal tone, the bass 5 (also known as the barrel tone) will become lower in a short period of time, and the treble 6 will be difficult to pronounce.

Why is there such a phenomenon that the tone of the barrel becomes lower? When playing the drum tone, the whole reed tongue is vibrating, and when playing other sounds, the reed tongue is only partially vibrated. The lower the tone, the longer the reed tongue vibrates, and the lower the frequency. The root of the film will quickly become soft, and the vibration frequency will also decrease, so the pronunciation of the drum tone will also decrease. If it's seriously low, it's time to replace the reed. If it is slightly lower, it can be adjusted, which will be discussed in the following chapters. To sum up, the maintenance of cucurbit silk ultimately depends on scientific playing and use to maintain the life of the reed.

2. Handling of common problems

1. When the cucurbit silk is played in a cooling state, the barrel tone will generally be high, and the mid-high range will be low, and there will generally be a deviation of about 10 cents. The main reason for such a situation is that when the reed is in a cooling state, the vibration of the base of the reed tongue will be very rigid, and even when the vibrating part rises, the length of the vibrating reed tongue will be shortened objectively, so the vibration frequency will increase, and the drum sound will also be reduced. It increases with it, but as long as it is played for a little time, as the temperature rises, the vibration of the entire reed becomes active and the sound is normal.

At this time, due to the low temperature, the vibration frequency of the vibrating reed tongue is not enough, so the rest of the sounds except the drum sound are low. In order to avoid this phenomenon and ensure that you can play normally at the beginning, you can press down the upper six sound holes before playing, and breathe a few hot air into the seventh sound hole on the back to preheat the reed and reach the normal tone. The required temperature, so that the playing state of the hulusi can be adjusted to normal without making a sound.

2. Sofa in the mid-range, harsh shaking, bright treble, and low bass. These three problems appear at the same time, indicating that the angle of the reed is too high. You can use a sharp object to try to press the base of the tongue of the reed. Repeatedly adjust the height until you find the angle of normal pronunciation. If you can't adjust it, that's the reason.

Bass is the adjustment of the low-pitched tone. The low level referred to here is generally not more than 30 to 40 cents, and if it exceeds, the reed may need to be replaced. It is best to be handled by a professional manufacturer. If you do find a professional manufacturer to repair it, you must be careful when you operate it yourself, so as not to deform the reed.

The method is like this, if it is cucurbit silk, carefully pull out the main pipe from the gourd, try to thin the tip of the spring tongue on the main pipe with a sharp tool, pay attention to the direction and location of grinding, don't be impatient, every 2-3 strokes. After the knife, try to see if the sound of the barrel is accurate. After the adjustment, check whether there are burrs on the reed tongue. If there are burrs, remove them, and then put the main tube into the gourd and fix it.

The above is about the maintenance method of cucurbit silk and how to deal with the general problems encountered during the use of cucurbit silk. Hope it will be helpful to you all.