For many friends who like cucurbit silk, how to adjust the tone of the drum is often low-key. Today I will chat with you, I hope it will be helpful to you!

Friends who study or make cucurbit flute and bawu know that the pitch of cucurbit and bawu is impossible to be as accurate as that of piano and keyboard instruments. Its pitch changes with temperature, climate, breath, and seasons. It will also be worn out by playing the reeds for a long time, resulting in inaccurate drum tone or other inaccuracy. Therefore, there is also a standard for tuning, which cannot be debugged blindly. The pitch of the barrel tone is 10 cents up and down without tuning; other tones are 20-25 cents up and down without debugging; except for the barrel tone, the overall tone is 40 cents lower in winter or when the temperature is very low, and there is no need to debug; here I will focus on the debugging method of the inaccurate tube tone; the inaccurate tube tone has two types: high and low. When talking about the pitch of Hulusi and Bawu, the pitch must be determined with a tuner, also called a tuner, and cannot be judged by feeling or ears. Of course, it doesn't matter if you don't have a tuner. You can download an electronic tuner on the Internet with your mobile phone. However, after all, electronic tuners are not professional, and there are differences in pitch. You can only make a rough reference. Adjust the pitch of the electronic tuner.

Debugging method for high pitch of cucurbit tube

The reasons for the high drum tone are that the temperature is too low, the breath is too light, the reed is too low, the root of the reed is stained, and the root of the reed is too thick.

The tone of the barrel is too high. First, the base of the reed tongue can be thinned with a sharp tool. Be careful to try to shave a little, so as not to shave too much. The second is to "move (excavate, fill)" the sound hole toward the end of the main pipe. Pay attention to this sound hole is also the sound hole of the bass, you must be careful, excavate (fill) a little bit, and test the sound.

If the barrel sound is high due to the oxidation of the reed caused by long-term placement, the reed can be disinfected with alcohol to remove the oxide in the gap between the reed and the reed.

When playing the cucurbit flute at a relatively high temperature, the drum tone will be high and the mid-high range will be low at the beginning. The reason is that when the reed is cooled, the base of the tongue is relatively rigid, just like "shortening" the length of the tongue, and the frequency of vibration increases. At this time, hold down the upper six sound holes, and breathe a few hot air into the seventh hole on the back, so that the reed reaches the normal temperature, and the normal pitch can be restored.

If the temperature is too low, just blow it for five minutes;

The breath is too light to increase the breath;

If the reed is low, first blow the two tones of the midrange 6 and 5. If these two tones are relatively bright, it means that the reed is not low and needs to scrape the reed. For example, the volume of these two tones is small and the barrel tone is If it is on the high side, it means that the reed is too low, and the reed needs to be lifted slightly. When debugging, it is better to adjust the reed several times than to lift the reed very high at one time, so as to avoid sand noise or breakage of the reed. .

The root of the reed is stained or thick. Use a very thin razor blade to cut it into a triangle and place it under the reed. Use a sharper knife to shave twice at the center of the root. Scratching.

Debugging method for low sound of cucurbit flute

The reasons for the low drum sound are that the temperature is too high, the breath is too heavy, the reed is too high, the tip of the reed is stained, and the tip of the reed is thick.

When the drum is played, the entire reed participates in the vibration. If the breath is too strong and the time is long, the root of the reed tongue will be fatigued, the vibration frequency will be reduced, and the tone of the drum will be low. Another reason is that the material of the copper sheet is not ideal. When I first bought it, the pitch was good. After a period of time, the reed tongue became soft and the tone of the barrel decreased. It can be solved by thickening the root of the spring tongue. The easiest way is to cut a small piece of double-sided tape and stick it to the base of the reed tongue. The thicker the double-sided tape, the greater the pitch rise. In this way, it will have a slight effect on the sound, but it is convenient and quick.

Mr. Li Chunhua's experience is: if the tone of the barrel is not more than 30 to 40 cents, you can use a sharp tool to carefully thin the tip of the reed tongue. When thinning, pay attention to the direction and location, remove burrs, and do not be too hasty.

If the temperature of the reeds of the cucurbit flute is too high for a long time, the tone of the drum will be low, that is, it is best to play a cucurbit flute for no more than 1 hour;

The breath is too heavy to lighten the breath;

If the reed is too high, it will be very laborious and hoarse when playing the scale. As long as the reed is gently pressed down, the root of the reed should be pressed and the strength should be small, which requires multiple debugging.

The tip of the reed is stained and thick. Use a very thin razor blade to cut it into a triangle and place it under the reed. Sand the tip of the reed with sandpaper, or you can scrape it with a very sharp knife.