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How
do Bagpipes Work?
Air passing over a "reed" (a thin strip of metal or wood) will cause the reed to vibrate, and produce a musical note. This is the principle on which all reed instruments are founded, from the simple mouth organ to some of the mighty pipes of a classical organ. Within this family of instruments, the bagpipe is one of the oldest in recorded history, the earliest references dating back to around 1000 BC. Better known modern examples include Clarinet, Saxophone and Bassoon. Other wind instruments, such as Flute, Recorder and the "Brass Band" family do not employ reeds, and work on an entirely different principle. The bagpipe is so called because the air to power the reeds is stored at light pressure in a bag (frequently of animal skin) which is normally pressurised by tucking the bag under the player's arm and gently squeezing. The bag is re-supplied with air either though a mouth tube or from a bellows operated by the player's other arm. When a reed is placed within a tube, the note produced can be varied by changing the length pf the tube, a phenomenon known as "resonance". The length, width and thickness of the reed also affects the note produced. Part of the art of successful instrument making is to match carefully the dimensions of the reed to the length of the tube. Drones, Chanters and other bits:
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