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SOUND PRODUCTION To produce sound with the woodwind instruments, the air in the hollow tube of the instruments must be made to vibrate with the force of the player's breath. The pitch of the note depends on the length of the columns. Longer columns cause slower vibrations and in turn, produce a lower pitch while shorter columns produce a higher pitch. Most woodwinds use reeds to produce sound. Reeds are generators which produce vibrations, and in turn, produce sound. There are 2 types of reeds used in woodwind instruments -- the free air-reed and the cane-reed. In free air-reed woodwinds, the player blows a stream of air against the edge of the mouth-hole. There are 2 types of cane-reeds - the single and double reeds.
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