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PHYS103/DHC161

PHYS103/DHC161. The Pipe Organ. Overview. The organ is a wind instrument. each pipe corresponds to one note (like a panflute). mechanical air source design of pipe determines timbre console keys activate valves that let air into a given pipe

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PHYS103/DHC161

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  1. PHYS103/DHC161 The Pipe Organ

  2. Overview The organ is a wind instrument • each pipe corresponds to one note (like a panflute) • mechanical air source • design of pipe determines timbre • console keys activate valves that let air into a given pipe • the console may be some distance away from the pipes “Most complex machine prior to the Industrial Revolution”

  3. organization A set of pipes that produce a particular timbre is called a rank

  4. operation each stop controls the air supply to a rank

  5. operation

  6. the console the pedals control low-pitched divisions each stop controls a rank each row of keys is called a manual each manual controls a division

  7. the air supply

  8. types of pipes flue reed

  9. flue pipes Like a recorder Can be open or closed on top Can be cylindrical or conical pitch determined by pipe length timbre determined by bore shape and diameter

  10. reed pipes pitch determined by reed only resonator affects timbre (reed) “vox humana” pipes (from the Weingarten Basilica) air flow

  11. pipe pitches pitch range of rank indicated by length of lowest pipe 16 ‘ is usually controlled by pedals 8’ is the “principal” rank 4’ is often called the “octave” rank 2’ and 1’ are very high registers

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