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Author Topic: Reverb Chamber  (Read 5892 times)

compasspnt

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Re: Reverb Chamber
« Reply #15 on: February 23, 2009, 01:09:05 am »

Theoretically, the larger the room, the loner the delay time.


Download GIMP, a great and free "photoshop" programme.
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Adam The Truck Driver

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Re: Reverb Chamber
« Reply #16 on: February 23, 2009, 08:23:17 pm »

Thanks Terry

So if it is a big dense sounding reverb I want a bigger room like the 8'x32' space with let's say a 16' high ceiling would be the way for me to go...what I am concerned of is the thing(s) sounding muddled due to being either too big or small. If that isn't an issue to worry over then I'll proceed onto other details in the planning process.

Terry, do you use your chambers on a lot of stuff regularly, or do you use the plates or digital ones most?

TYVM
AB
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Dominick

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Re: Reverb Chamber
« Reply #17 on: February 24, 2009, 07:12:04 am »

Since all dimensions are multiples of 8, an 8' x 32' x 16' room would have some serious resonance issues.
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Dominick Costanzo

Adam The Truck Driver

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Re: Reverb Chamber
« Reply #18 on: February 24, 2009, 08:23:58 am »

Alright Dominick

That is the kind of info I am wanting and needing to know. I can make it 8'x31' with a 15' ceiling. Would that settle bad resonance issues? I don't know why I was thinking all I had to do was avoid multiples of 10. I think I understand now though. I need to avoid any multiples in width depth and height? My spaces dimensions aren't too big. They're just wrong...lol...how typical...luckily it's just a plan and can be adjusted.

thanks again
AB
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Thomas Jouanjean

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Re: Reverb Chamber
« Reply #19 on: February 24, 2009, 09:09:24 am »

For a reverb room I'd go straight for a "golden" ratio, no question - so the reverb is not too colored by modal response of the room. Of course it matters less what the orientation of the ratios are, look at it like a rectangle and place it on which ever side you prefer so you don't loose too much space.

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Thomas Jouanjean
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Adam The Truck Driver

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Re: Reverb Chamber
« Reply #20 on: February 24, 2009, 09:36:32 am »

Thanks Thomas

That sounds cool. Now let me find out what the "golden ratio" is and I'm set. I am aware of the rectangles are best scenario, but is this "golden" rule something special within or of said rectangle?

TYVM
AB
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Thomas Jouanjean

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Re: Reverb Chamber
« Reply #21 on: February 24, 2009, 10:00:59 am »

Good pages about it:

http://www.acoustics.salford.ac.uk/acoustics_info/room_sizin g/
http://www.acoustics.salford.ac.uk/acoustics_info/room_sizin g/?content=methods

And what you are looking for to solve your size problem:

http://www.acoustics.salford.ac.uk/acoustics_info/room_sizin g/?content=best

Pick any that fits you the best Smile
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Thomas Jouanjean
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Adam The Truck Driver

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Re: Reverb Chamber
« Reply #22 on: February 24, 2009, 11:27:38 am »

Without a doubt, this is over my head. Ratios? Does 1:1.4:1.9 mean...well...I need things to be in feet and inches, or even meters, cm, and mm...that I can figure out...maybe.

1'x1.4'x1.9'=12"x15"x18.4" and if I can stay within increments of 1/16th of an inch I won't need a special tape measures that uses 10ths.

So I have an 8' wide space. It should be 10' long and 10.13' high? I would wager that I am very wrong.

I foresee much confusion on my part if I want to follow certain standards which aren't in feet and inches.

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Thomas Jouanjean

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Re: Reverb Chamber
« Reply #23 on: February 24, 2009, 11:55:32 am »

If we work in the meter scale, if your room is 8' so roughly 2.43m the rest of the room dimensions need to be: 2.43m x 1.4=3.40m and 2.43x1.9=4.56m

So roughly 8' / 11.15' / 14.96'

For a reverb room, this box can sit on any of it's sides, doesn't matter. Just make it practical for it to work right.
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Thomas Jouanjean
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Adam The Truck Driver

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Re: Reverb Chamber
« Reply #24 on: February 25, 2009, 10:06:55 am »

Thanks again Thomas

Which measurement would be the height if 8' is the width? 11.15' or 14.96'?

Also I can only guess the reverb tail in this room would be very dependent on the surfaces within to a degree, and if I wanted a bigger/longer reverb I would need to quadruple it first?
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Thomas Jouanjean

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Re: Reverb Chamber
« Reply #25 on: February 25, 2009, 10:36:24 am »

Yup, the materials matter a lot.

Be very careful with size or you may end up with slap echo like phenomenon... You don't want that.

Have a look at the Haas theory.
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Thomas Jouanjean
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franman

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Re: Reverb Chamber
« Reply #26 on: March 01, 2009, 11:07:52 pm »

Guys,

I want to point out that the finish material(s) for ALL surfaces is very important for chambers. We are working on one for one project under construction right now and it makes a big difference once you cover the surfaces with smooth hard plaster..... really brightens things up. We have also done some experimenting with baffles (deflectors is probably a better description) inside the room. These helped as well.

I will try to make a post with some more specifics when I have a minute (at work) as all the details are there... it's been interesting.
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Adam The Truck Driver

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Re: Reverb Chamber
« Reply #27 on: March 02, 2009, 05:16:18 pm »

That would be great.

TYVM
AB
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Adam The Truck Driver

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Re: Reverb Chamber
« Reply #28 on: April 27, 2009, 11:16:45 pm »

franman wrote on Sun, 01 March 2009 22:07

Guys,

I want to point out that the finish material(s) for ALL surfaces is very important for chambers. We are working on one for one project under construction right now and it makes a big difference once you cover the surfaces with smooth hard plaster..... really brightens things up. We have also done some experimenting with baffles (deflectors is probably a better description) inside the room. These helped as well.

I will try to make a post with some more specifics when I have a minute (at work) as all the details are there... it's been interesting.


Ahem
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Adam Brown

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rankus

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Re: Reverb Chamber
« Reply #29 on: April 28, 2009, 12:41:47 am »



Adam,  I think that when you want longer reverb you simply feed back some of the returned reverb back into the chamber.  No need to increase the size of the room to get longer tails. (this used to be known as "foldback" ... or on some older reverb units it is labeled "feedback")

If your returning the verb into a channel strip on your console then you can do this by increasing the (reverb) aux send on that channel which will send some of the wet signal back to the chamber.

Would love to see some of those photos Fran was mentioning too.

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