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This tube like instrument doesn't have both ends open. The bottom of the tube is covered or blocked, so the air doesn't go through the tube freely. Once you blow into the tubes, you have to find the perfect angle to produce the right sound or note. When you blow into the tube the air vibrates in a zigzag fashion way that hits the bottom of the tube reflecting off the bottom, and floating back out in waves. They're five or more tubes on a pan Flute. Each tube has a different length that creates different pitches. The longer the tubes, the deeper the pitch. But, the smaller the tube, the higher the pitch. The frequency is determined by the dimensions of each tube. In the pan flute, it uses resonance by blowing air into the tube, with the air reflecting off the bottom and spreading out of the open end of the pan flute creating different sounds that not everyone has heard.

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14y ago

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