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Gedackt

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Gedackt

Cross-section of a wooden gedackt pipe

Gedackt (also spelled gedeckt) is the name of a family of stops in flue pipe. The name is a German word, meaning "capped" or "covered".

Contents

  • History 1
  • Construction 2
  • Sound 3
  • External links 4

History

The concept of the stopped flute pipe (of which gedackt is a prime example) is almost as old as organ construction. As early as 1600, in Germanic organs, stopped flutes were common additions to the specification. Besides giving a distinct flute-like tone (in contrast to the more open and expressive tone of the diapason, the organ's basic voice) the stopped flutes offer a perfect ensemble stop for making combinations. Stopped flutes like the gedackt are extremely versatile in an organ specification. Certain types of organ stops go in and out of fashion over the centuries, but the stopped flute ranks like the gedackt are always present on instruments of all sizes. Even the very smallest pipe organs will have some form of stopped flute in the specification.

Construction

Gedackt pipes can be made of either Diapason, needs to be eight feet long at low "C" on the keyboard, but the capped gedackt of similar pitch need be only four feet long at that point, making the stop very compact to build. As in most wood pipes, the foot, block (which contains the windway), mouthpiece and cap are hardwood. The body of the pipe is usually hardwood, but can also be built of conifer or other woods, especially in large pipes.

Sound

The gedackt produces a moderately soft, bland, flute-like tone, invaluable for basic ensemble sound in the pipe organ. The stopped design eliminates many high overtones, leaving the classic sound of the gedackt, which blends seamlessly with almost all other stops. It is similar in sound to the bourdon, but is usually softer and somewhat sweeter in tone. The bourdon's heavier construction and square-walled pipes gives it a more pronounced and weighty tone.

The gedackt's strong fundamental tone is never lost, but is absorbed into combination, making a new "whole", rather than standing alone as a distinct sound in combination with other stops. Yet, used as a solo voice, the gedackt has a contemplative and relaxing sound in its lower registers, and a singing and plaintive tone in the treble notes. Large organs will sometimes have a gedackt especially voiced for solo work, frequently labeled as a "Lieblich" ("lovely") gedackt or "Singengedackt" on the stop knob. Gedackts can be built in all pitch ranges used on the organ, but they are most common at 8′ and 4′ pitch in the manuals, and 16′ pitch in the pedals.

It is of interest that two very small gedackt pipes, fitted with bellows, are what produce the common cuckoo bird call on the striking of a traditional mechanical cuckoo clock.

External links

  • Gedackt in the "Encyclopedia of Organ Stops"
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