1 Edges effect
The blow hole caused by a specific angle side edges, cutting through the
air flow when the flute edges, leaving a portion of the airflow flute,
a part of theairflow into the flute, resulting in a certain frequency of vibration and sound.
2 Resonance effect
When the flute, flute airflow into the spin spiral way forward,
until you leave the flute so far in this process in accordance with
the air column tube lumen diameter and length,
resulting in different resonance frequencies, resulting in pitch.
Because bamboo is natural product, pure hand-made products,
the size and bamboo pattern on each product will be a little different,
But it does not affect the use of flute and sound, please do not worry