Cloud Effects

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Cloud Effects

Postby David French » Thu Apr 27, 2006 7:08 pm

I did a little study on the effects of 4" 703 clouds on the modal resonances of my 159" x 118" x 96" room; hopefully it's useful to someone.
Attachments
cloud_effects.gif
This is an animated GIF showing the effects of the clouds on selected modes. The first slice is the empty room, the second is with one cloud completed, and the third slice is with both clouds. Gate time: 300 msec Slice time: 20 msec
(187.51 KiB) Downloaded 1037 times
setup.gif
Test setup. Clouds are 4"-8" from ceiling.
setup.gif (25.2 KiB) Viewed 15077 times
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Postby Zaphod » Thu Apr 27, 2006 8:03 pm

Interesting, they had quite an effect on modes.

What size the clouds were?
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Postby David French » Thu Apr 27, 2006 8:27 pm

Damn, I knew I forgot something.  Each cloud is three panels side-by-side, so 6' x 4'.
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Postby Eric Desart » Thu Apr 27, 2006 9:24 pm

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Postby bert stoltenborg » Thu Apr 27, 2006 9:42 pm

Could you also post a boring graph that' s not moving and stuff? Or am I becoming to old for this?

:D  :D  :D
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Postby bert stoltenborg » Thu Apr 27, 2006 9:42 pm

What's this program anyway?
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Postby Eric Desart » Thu Apr 27, 2006 9:47 pm

David French wrote:Damn, I knew I forgot something.  Each cloud is three panels side-by-side, so 6' x 4'.


:mrgreen:  I checked ALL related threads and posts.
You nowhere told how thick they where ...
So I assume 2" .....

:twisted:  let's try: 6' x 4' x 2".
Yes that works too ...... The forum also accepts 3D objects ...
.
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Postby David French » Thu Apr 27, 2006 10:08 pm

The 10th word of my first post in this thread tells how thick they are, 4 inches.

The picture on RO is old.  Those are 2 inch thick.
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Postby Eric Desart » Thu Apr 27, 2006 10:14 pm

David,

:oops:  I'm ashamed now VERY ashamed.
I was looking in that RO thread.  But I suffer the tendency to look in the wrong places.

:?  I hope you'll forgive me once .....
.
Last edited by Eric Desart on Thu Apr 27, 2006 10:15 pm, edited 1 time in total.
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Postby David French » Thu Apr 27, 2006 10:14 pm

Bert, the program is the wonderful Room EQ Wizard, the free program that's got me all kinds of excited and has caused me to pretty much forget that ETF even exists.  Damn these graphics are sweet!

Here, for the old, are static graphs.  I really think the animated GIF is the best way to communicate the informantion, but it's all good.
Attachments
0_panels.gif
(73.16 KiB) Downloaded 188 times
3_panels.gif
(63.04 KiB) Downloaded 107 times
6_panels.gif
(56.59 KiB) Downloaded 147 times
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Postby J.F.Oros » Thu Apr 27, 2006 10:17 pm

bert stoltenborg wrote:What's this program anyway?

This is one measurement program that you can't say anything bad about it be cause it's free  :mrgreen:
And it's really a good program  :D
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Postby David French » Thu Apr 27, 2006 10:21 pm

Eric, that was a rare oversight, certainly no cause for shame.   :8

So why did my most recent GIFs not display in the thread?
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Postby Eric Desart » Thu Apr 27, 2006 10:29 pm

Therefor you need to read the sticky in the forum:

Read this before entering your first post
I did Sooooooooooooooo my best in writing that hoping that someone would read it.
It, among other things, explains entering pictures.

To keep the thread intact (without needing to scroll) the limit is 660 x 660.
When you link directly from a site (then you can enter them in your text) the limit is 680 x 680.

You can go beyond that to < 800 x 800 but then the forum layout gets scrambled.
And above that it show as it did now.

Hence the rule is: as you do it 660 x 660.
Via a link elsewhere 680 x 680.
Last edited by Eric Desart on Thu Apr 27, 2006 10:32 pm, edited 1 time in total.
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Postby J.F.Oros » Thu Apr 27, 2006 10:30 pm

David, did you put those mode indexes on the graphs ?
For a moment I thought REW is that smart  :D , (but I can't find an option to set the room's dimensions in it).
As I said it in Jonathan's iRoom thread, a measurement software that would mark on the freq. curve the modes locations would kick ass !
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Postby J.F.Oros » Thu Apr 27, 2006 10:33 pm

Eric Desart wrote:Hence the rule is: as you do it 660 x 660.
Via a link elsewhere 680 x 680.

And be carefull to not use the 666 x 666 dimensions ! Double trouble  :twisted:  :twisted:
:mrgreen:
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Postby Eric Desart » Thu Apr 27, 2006 10:35 pm

J.F.Oros wrote:
bert stoltenborg wrote:What's this program anyway?

This is one measurement program that you can't say anything bad about it be cause it's free  :mrgreen:

:mrgreen:  Are we speaking about the SAME Bert ????

Should there be something he trusts AFTER ALL?

NAAAAAAAAAAAAAAAAH
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Postby J.F.Oros » Thu Apr 27, 2006 10:39 pm

Eric Desart wrote:Should there be something he trusts AFTER ALL?

I think he trusts YOUR guts (not his)  :mrgreen:
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Postby David French » Thu Apr 27, 2006 11:08 pm

Flav, yes I put the mode IDs in the graphic.  Good God it would be awesome if a program could do that.
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Postby Bob » Thu Apr 27, 2006 11:54 pm

David French

I did a little study on the effects of 4" 703 clouds on the modal resonances of my 159" x 118" x 96" room; hopefully it's useful to someone.

I looked at your animation gif -- it looks to me that the modes were not affected at all, but rather it simply made the room quieter and kept the modes. Is that your read too?
Regards
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Postby bert stoltenborg » Fri Apr 28, 2006 12:26 am

J.F.Oros wrote:
Eric Desart wrote:Should there be something he trusts AFTER ALL?

I think he trusts YOUR guts (not his)  :mrgreen:


When Eric guides me, i'll go blindfolded throug the alligator trap
:mrgreen:
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