Traditionally, it is mostly oval, but now there are many kinds, such as gourd, handle, mandarin duck, mother and son, etc., with beautiful style and fine technology.
1. Gourd bed: equipped with throat device, shaped like a gourd. It needs to be made twice in production, and the process is complicated. The place near the waist is the thinnest, and when the airflow passes, it can cause edge sound effect again, so that the high-pitched range of the trap can be appropriately expanded. Because the piano body is longer, it is more convenient and labor-saving to play, and the timbre is softer than the traditional oval.
Characteristics of gourd awn:
A. The range above the pitch (starting from full flat blowing) extends for three degrees; But the downward flow part below the pitch is reduced by three degrees;
B, save effort when playing high notes;
C due to the throat device, the timbre of the bass area is affected.
2. Grip method: Hold the violin and control the sound hole with ten fingers and the root of thumb.
3. Yuanyang spectrum: refers to the binary spectrum with different pitches, opposite directions and connected bases. The two ends of this urn have a blowing hole, and the sound holes of the upper and lower urns are exactly the same as those of ordinary urns. You can quickly change when you play.
Yuanyang tune is characterized by rich timbre and wide range. But the shape is not beautiful (compared with the original shape), and Yuanyang is not used correctly when playing.
Shit. Moreover, the sound quality changes greatly, so the sound quality is uneven.
4. Mother and child: refers to two conjoined urns with different sizes and the same direction. The interval between the big urn and the small urn is generally pure five degrees. For example, the big one is G, and the small one is D. You can also combine them as you like.
5. Tau-head ring: According to the improvement of Ningxia Hui musical instrument, it has a hole of 10, ranging from bass 5 to treble 2, and has a sound insulation board inside, which is round and thick and easy to blow the treble. The disadvantage is that the hole is slightly larger and the scope is not easy to expand.
6. Bullet pad: the latest patented product of Feng's ceramic pad. The inner gourd-like pad adopts double-cavity structure, which is easy for beginners to master at will and easy to play high notes; The disadvantage is that it is not easy to blow down.
7. Lady's urn [5]: The urn of Empty Valley Musical Instrument is designed with the theme of ancient lady image, and its urn is mostly made of Ni Xingtao, one of the four famous pottery in China, without glaze kiln.
Become a must, showing elegance and generosity. When the leaves fall, the lead is washed away with the sad song of Gu Xun, and you recall the distant dream and turn back to the beautiful and melancholy historical picture of the Millennium. During the feast, the ladies wore elegant skirts and sang and danced. ...
8. Pen container: named after the appearance of the pen container. The common ones are gourd, bull's head, bullet, pen container and oval. Others are rare.
Judging from the materials:
Yan is a musical instrument with great personality. Yan's various materials and shapes have their own characteristics in timbre, and their expressive force in works is also different.
1. Low-temperature pottery: The common black pottery in Xi 'an is generally low-temperature pottery, which has good water absorption, avoids bumping and cannot be washed.
2. Medium-temperature pottery: Red pottery generally adopts medium-temperature pottery, which has moderate hardness, good water absorption and stable pronunciation when played for a long time at low temperature.
3. High temperature ceramics: high hardness and washability. The disadvantage is that it does not absorb water at all, and it will accumulate water in low-temperature concerts, which will easily affect pronunciation.
4. Semi-porcelain: that is, porcelain that is not completely fired. Generally, the surface is glazed for easy cleaning. It has the characteristics of moderate temperature pottery, moderate hardness, washability, good water absorption, no water accumulation after playing for a long time at low temperature, and stable pronunciation.
5. Porcelain: fired at high temperature, similar to high-temperature pottery, generally glazed on the surface. It doesn't absorb water at all, and the concert will accumulate water at low temperature, which will easily affect pronunciation.
6. Wood: light weight, not easy to break. Does not absorb water.
7. Bamboo: Bamboo, bamboo. Not easy to break, not absorbent.
8. Others: resin, resin mixed clay, plastic. . . etc