diffusor idea
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figurehead
- Posts: 21
- Joined: Fri May 21, 2004 2:04 am
diffusor idea
would it work if you were to use varying sizes of pvc pipe possibly deadend to stop certain tones, as a diffusor. i was thinking of creating up to 3 different rows of varying width each about 1 to 2" apart and then leaving some space behind the last row as well. the theory i suppose is with the rounded surface on both the initial hit and the reflections it will give good diffusion, just a thoery
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figurehead
- Posts: 21
- Joined: Fri May 21, 2004 2:04 am
a pic to better describe
not much response on the idea here was hoping for some real good opinions positive or negative, i dont realy know much on diffusion and its nature, but here is a pic to clarify the proposition.
Last edited by figurehead on Mon May 24, 2004 5:41 am, edited 6 times in total.
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dymaxian
- Senior Member
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- Joined: Tue Dec 02, 2003 7:21 am
- Location: Madison, Wisconsin
This kind of idea for diffusion can only really be solved by testing it. I got the same kind of response for my diffusion ideas. We can make guesses, but they'll basically be shots in the dark. Build one, and test it against a diffusor you have specs on. It may turn out to be the best diffusion money can buy- it may not work at all.
My opinion- it's not a bad theory at all. It'd take a lot of effort to actually put it in practice, but so will many diffusion theories. How are you planning to fabricate this?
My opinion- it's not a bad theory at all. It'd take a lot of effort to actually put it in practice, but so will many diffusion theories. How are you planning to fabricate this?
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barefoot
- Moderator
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- Location: Portland Oregon
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figurehead,
Sorry, I deleted your double post and the picture attachment on the first post disappeared as well. If you can't edit the post and upload the image again, then send the file to me. I’ll put it back in.
As far as the diffusors go, they will only be effective at frequencies whose wavelengths are smaller than the pipe diameters. For example, a 3" pipe will only diffuse efficiently down to about 4 or 5kHz. Clustering them together may lower the response a little, but not much.
Building larger continuous curved surfaces out of pipes might have some beneficial diffusion properties, but it would require testing.
Thomas
Sorry, I deleted your double post and the picture attachment on the first post disappeared as well. If you can't edit the post and upload the image again, then send the file to me. I’ll put it back in.
As far as the diffusors go, they will only be effective at frequencies whose wavelengths are smaller than the pipe diameters. For example, a 3" pipe will only diffuse efficiently down to about 4 or 5kHz. Clustering them together may lower the response a little, but not much.
Building larger continuous curved surfaces out of pipes might have some beneficial diffusion properties, but it would require testing.
Thomas
Thomas Barefoot
Barefoot Sound
Barefoot Sound
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dawkab
- Posts: 1
- Joined: Sun May 23, 2004 11:44 pm
diffusors
Newbie here, looks like a great forum!
On the subject of pvc pipes as difussors, you might want to check out the "room lense", sorry can't remember the site link, but google it and you'll find it easy. They seem to be a combination of diffusion/absorbtion.
On the subject of pvc pipes as difussors, you might want to check out the "room lense", sorry can't remember the site link, but google it and you'll find it easy. They seem to be a combination of diffusion/absorbtion.