Dizi lovers always want to have a good flute. How can it be considered a good one? Some people think that the price is high and the appearance is beautiful, but it is not the case. A good flute should first be good to play, including accurate intervals and scales, crisp pronunciation, solid quality, and meticulous production. So how to check?

(1) First check the pitch. In the absence of a fixed instrument comparison, the inspection method is to first blow the three octaves of the flute "5.5`5" (the third hole is "1"), and listen to whether the relationship between the octaves is accurate; Play each note to check the relationship between degrees and intervals, such as "`25", "`36", "`14", "73", "6 2", "5 1", etc.; play the scale again (with the third hole Make "1" as the basic tone), whether the sound is accurate; finally blow each overtone to see how the pronunciation is, and it is ideal to emit the overtone smoothly.

(2) Bamboo should be firm, dry and old, round and without cracks. If the color of the bamboo turns blue, it means that the bamboo is not old or uneven. Such a flute will not be played for a long time, the bamboo skin will shrink and the sound will change, which will not only affect the intonation, but also the timbre is unpleasant.

(3) The requirements for production are that the inside of the bobbin is flat and round, without knot marks: the size of the blow hole, membrane hole and sound hole is moderate, and the hole is smooth and clean without bamboo hair. The general standard is to blow or form a round "O", the membrane hole can be slightly elliptical, the sound hole is elliptical, and all the holes are dug in obliquely from the outside to the inside.