What happen when we close the more holes of flute
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A flute is a tube which oscillates making the longitudinal waves we call sound.
Any tube has a fundamental pitch related to a wave vibrating over its length. The principle is the same whether the sound is introduced as a transverse mouthpiece, a reed, or a brass mouthpiece. It is determined by the length of the tube.
A simple tube will have a single pitch (and harmonics) as illustrated in the other answer with the pan pipe.
A way of introducing additional notes is to have holes along the length that can be uncovered. Once uncovered, they constrain the waves to have a node at the point of the opening. That’s a little like what is done on stringed instruments, where a long string is held at a point along it, and a shorter length vibrated.
The number of holes are determined by the number of notes you wish to play. Some holes help refine the node, and therefore the pitch, of the note wished to be played. Some holes enable flat and sharp notes be added to the pitch.
Any tube has a fundamental pitch related to a wave vibrating over its length. The principle is the same whether the sound is introduced as a transverse mouthpiece, a reed, or a brass mouthpiece. It is determined by the length of the tube.
A simple tube will have a single pitch (and harmonics) as illustrated in the other answer with the pan pipe.
A way of introducing additional notes is to have holes along the length that can be uncovered. Once uncovered, they constrain the waves to have a node at the point of the opening. That’s a little like what is done on stringed instruments, where a long string is held at a point along it, and a shorter length vibrated.
The number of holes are determined by the number of notes you wish to play. Some holes help refine the node, and therefore the pitch, of the note wished to be played. Some holes enable flat and sharp notes be added to the pitch.
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