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A reed pipe (also referred to as a lingual pipe) is an organ pipe that is sounded by a vibrating brass strip known as a reed. Air under pressure (referred to as wind ) is directed towards the reed, which vibrates at a specific pitch .
In a rank of stopped pipes, the lowest pipe is 4 feet in length but sounds at unison pitch—that is, at the same pitch as an 8 ′ open pipe—so it is known as an 8 ′ stop. Reed pipes are also labeled the same as that of an open pipe with the same pitch, regardless of the actual length of the pipe.
Reed A reed stop at 8 ft pitch on the manuals with a tone similar to that of a bassoon. Dulciana Dulziana String An 8 ft pitch metal string stop. Usually the softest stop on an organ. Fagotto (Italian) Fagot (Dutch) Fagott (German) Bassoon (English) Basson (French) Reed: A 16 ft or 8 ft pitch chorus reed.
On a slotted metal pipe, some or all of the metal cut out to make the slot is rolled up so the slot can effectively be shortened or lengthened, thus changing the pitch of the pipe. On a slotted wooden pipe, a wooden slider is provided to shorten or lengthen the slot. A stopped pipe (wood or metal) is usually tuned by moving its stopper up or down.
Ophicleide (/ ˈ ɒ f ɪ k l aɪ d / OFF-ih-klyde) and Contra Ophicleide are powerful pipe organ reed pipes used as organ stops. The name comes from the early brass instrument, the ophicleide, forerunner of the euphonium. The Ophicleide is generally at 16 ft pitch, and the Contra Ophicleide at 32 ft.
The pipe organ is a musical instrument that produces sound by driving pressurised air (called wind) through the organ pipes selected from a keyboard.Because each pipe produces a single pitch, the pipes are provided in sets called ranks, each of which has a common timbre, volume, and construction throughout the keyboard compass.
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Historically the ancestor of pump organs began as the types of pipe organs (positive, portative) using the resonance-pipes powered by the bellows (i.e. pumped pipe organs). In the 17th century on the small reed-pipe organs called regal , these reed-pipes were replaced by the beating- reeds , and its form is closer to the later rocking melodeon ...