Organ Pipe Research: Is 16ft Open-Top Flue Open at Bottom?

In summary, the conversation is about researching organ pipes, specifically a 16ft long flue organ pipe that is open at the top. The person is unsure if the pipe is also open at the bottom where the air flow enters. They are looking for definitive answers and a link to help with their research. Another person mentions that they have seen organ pipes that are open at the bottom and provides a link to a website that explains the basics of pipe organs. The conversation also mentions the pitch of different sized pipes and how it corresponds to the length and type of opening of the pipe.
  • #1
curlyman
1
0
Hi can anyone help me? I am researching into organ pipes, and dealing with a flue organ pipe that is 16ft long and open at the top, my conundrum is: is the organ pipe open at the bottom where the air flow enters? i can find no definitive answers, can anyone help/send me a link?
thanks
 
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  • #2
I can't really say between the different types. Admittedly I thought there was one basic design and slight variations from that. The ones I have seen were open on the bottom. They taper down in diameter and then basically plug into the air manifold. There is a Dirty Jobs episode where they clean a pipe organ and every single pipe. Here's a link that may help:

http://www.lawrencephelps.com/Documents/Articles/Beginner/pipeorgans101.html
 
  • #3
Fletcher and Rossing (http://books.google.com/books?id=9CRSRYQlRLkC, p557) state that the lowest note of an 8 ft rank produces 65 Hz pitch. If use http://hyperphysics.phy-astr.gsu.edu/hbase/waves/opecol.html, I find that a 65 Hz fundamental is produced by an ~8 ft (2.4 m) open or closed conical end.

http://www.nazard.co.uk/organ.html#pitch states that a 2 ft flue produces middle C. They state this to be 512 Hz, but most pianists think it's 260 Hz. If I use 260 Hz in the hyperphysics calculator, I find that it corresponds to an ~2 ft (0.6 m) open or closed conical end.

Nazard also says that a stopped 8' Diapson is only 4' long.
 
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FAQ: Organ Pipe Research: Is 16ft Open-Top Flue Open at Bottom?

What is an open-top flue?

An open-top flue is a type of pipe or channel that is open at the top, allowing air to flow freely through it.

What is the purpose of the open-top flue in organ pipes?

The open-top flue is an essential component in organ pipes as it helps to produce a specific tone or pitch by controlling the airflow and creating sound waves.

How does the open-top flue affect the sound of an organ pipe?

The open-top flue affects the sound of an organ pipe by determining the pitch or tone of the sound produced. The size and shape of the flue can also influence the quality and character of the sound.

Is it necessary for the open-top flue to be open at the bottom?

Yes, the open-top flue must be open at the bottom to allow air to flow freely through the pipe and produce sound. If the bottom of the flue is blocked, the sound produced will be muffled or non-existent.

What is the significance of the 16ft measurement in "Organ Pipe Research: Is 16ft Open-Top Flue Open at Bottom?"

The 16ft measurement refers to the length of the pipe, which is a standard measurement used in organ pipes. This specific length produces a low C note on a standard musical scale.

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