What is the pronunciation principle of playing flute? The principle of flute hole pronunciation is: flute belongs to the instrument of edge sound vibration. When the airflow blows into the sharp entrance of the nozzle, the airflow passes half outward and half inward, forming a separate vortex in the upper and lower columns. At this time, there is an empty suction phenomenon between the vortex. Because the pressure intensity of the nozzle is lower than the pressure of the atmosphere, the two separated airflow vortices attract each other, resulting in the sound of vibration caused by collision and friction. The position of the lip and the flute hole is also very important. In order to get a correct air flow angle, the lip edge of the lower lip must be aligned with the inner edge of the flute hole, and then the plane of the flute hole should not be turned out or tilted inward. If the flute hole goes out, it suppresses the fundamental frequency and highlights the high frequency overtone, which will make a large amount of air flow blow away from the blow mouth, and weaken the vibration and friction of the edge sound, so that it appears air leakage, sound quality is not strong, noise becomes more. If the flute hole is inward, the angle of the air flow into the mouth is small, then the timbre is not full, bright, the sound is stuffy, and there is no luster.