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Pyramid shaped room?

ppataki

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A pyramid has zero pair of parallel sides so theoretically there shall be no standing waves in it
But I am happy to stand corrected

Theoretically the fewer parallel sides you have the fewer room modes will form
 

Andysu

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A pyramid has zero pair of parallel sides so theoretically there shall be no standing waves in it
But I am happy to stand corrected

Theoretically the fewer parallel sides you have the fewer room modes will form
guess make the loft pyramid so the bass going up though the plasterboard , curious or maybe open the roof so bass sound goes upwards to , be just the side walls , floor well tested outside a speaker and then indoors it all changes and got do a lot to make it work well indoors due to boundary wall ceiling surfaces
 

janbth

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A pyramid has zero pair of parallel sides so theoretically there shall be no standing waves in it
But I am happy to stand corrected

Theoretically the fewer parallel sides you have the fewer room modes will form
No, this is not correct. Even rooms with non-parallel walls have room modes, but you can't use the "standard" room mode calculators to compute the modes. Here's a link to a discussion of Floys Toole's Sound Reproduction: https://community.klipsch.com/index...book-third-ed/&do=findComment&comment=2570381

Whether the pattern of modal frequencies are better or worse for a pyramid, I don't know.
 
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Pareto Pragmatic

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It depends. As most things do.

Is it a square pyramid at the base, or is it stretched out in one dimension? I assume the top is flat, not a point? Be cooler if it was a point. It would also make it more like a horn for ceiling reflections.

It seems like you will end up with more issues from ceiling reflections, and fewer from wall reflections. Chances are you would want to pay extra attention to the floor in such a room since all reflections lead to the floor, sooner rather than later.
 

NTK

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Room modes of a pyramid calculated using @ylio's calculator

The pyramid has a base of 6 m X 5 m. The tip is 5 m high and is at 1/3 of the room length and 1/2 of the room width (coordinate = [2, 2.5, 5]). Below is a screen capture that shows the 75.6 Hz mode (the 6th mode by mode frequencies, first mode is 35.7 Hz).
pyramid_room_mode.png


Attached is a ZIP file containing the clear text version of the pyramid STL file, and a picture showing how the (first 2) facets are described in the STL file. Interested readers can modified the STL file to create different shape pyramids if they don't have other means of creating STL files.
 

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egellings

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A pyramid has zero pair of parallel sides so theoretically there shall be no standing waves in it
But I am happy to stand corrected

Theoretically the fewer parallel sides you have the fewer room modes will form
Remember 'pyramid power'? A little clear plastic pyramid made to resemble that of Kin Tut supposedly had magical powers. Place a dull razor blade in there and next day the blade would be as sharp as new. The pyramid did a bunch of other magic, too. Imagine what a room shaped like that could do for audio! The sonics would be unbelievably good and they would cure what ails ya to boot.
 

fpitas

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Remember 'pyramid power'? A little clear plastic pyramid made to resemble that of Kin Tut supposedly had magical powers. Place a dull razor blade in there and next day the blade would be as sharp as new. The pyramid did a bunch of other magic, too. Imagine what a room shaped like that could do for audio! The sonics would be unbelievably good and they would cure what ails ya to boot.
It would be a handy tomb when it comes time to die, too!

/Already been done
 

egellings

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Remember 'pyramid power'? A little clear plastic pyramid made to resemble that of Kin Tut supposedly had magical powers. Place a dull razor blade in there and next day the blade would be as sharp as new. The pyramid did a bunch of other magic, too. Imagine what a room shaped like that could do for audio! The sonics would be unbelievably good and they would cure what ails ya to boot.
"King", not "Kin". A typo.
 

fpitas

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AudioJester

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It would be a handy tomb when it comes time to die, too!

/Already been done

No one told you?
There are hidden accoustic chambers in the pyramids. Ancient audio science was a thing - read the hieroglyphs on SINAD.
:p
 

fpitas

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No one told you?
There are hidden accoustic chambers in the pyramids. Ancient audio science was a thing - read the hieroglyphs on SINAD.
:p
Those non-parallel walls give the best listening experience, too.
 
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