Notes when playing the flute?The principle of flute pronunciation is: flute belongs to the edge edge vibration instrument.When the airflow blows into the sharp entrance of the pipe mouth, half of the airflow passes outward and half inward, forming a separate vortex between the upper and lower columns.Then, air suction occurs between the vortices.Because the pressure strength of the pipe port is lower than the pressure of the atmosphere, the two separated air currents attract each other, which produces the sound of collision and friction.The position of the lips and flute hole is also very important, to get a correct airflow angle must align the lower lip to the inner edge of the flute hole, and then put the plane of the flute hole flat, not outward or inward.If the flute hole is outward, it, the base frequency is suppressed and highlights the high tone, which will make a large amount of air flow blow away from the mouthpiece, and weaken the vibration and friction of the edge edge, so that the leakage sound, sound quality is not strong and more noise.If the flute hole is inward, the airflow Angle into the mouthpiece is small, then the sound is not full, not bright, dull and no luster.The correct blowing method should be the flute hole flat, the air flow feels like 90 degrees Angle into the hole, to get sufficient friction, make the sound is clear, bright, clean and mellow.When playing the flute, looking too up or down will also change the angle of the airflow.When the upper and lower lip is pressed, the lower lip overflows out, just 1 / 2 of the cover hole, (the lower lip should preferably not exceed 1 / 2 of the blow hole).When blowing, the middle vent of the lips shall be olive-shaped, in size about 5-6 mm long, and must not exceed the length of the blow hole.When playing the bass, maybe slightly larger.Due to the more airflow required of the bass, both sides of the air outlet shall be controlled.When playing the soprano, the mouth wind can not overflow, keep the breath concentrated, have the feeling of gathering at a point.The upper lip should be more than the lower lip, but not too much of the front and back of the upper lip will directly change the direction and angle of the air flow (Fig. I and 2).Special attention should be paid to the outlet part of the upper and lower lips, can not be pressed, should let the air flow blow out without obstruction.At this time, the whole lip muscle is squeezed, and should be slightly raised forward to make the air flow very concentrated into the flute hole.