For this build I wanted to make something that would break up my white walls and add a bit of texture. My room is really long so to get some control of the reflection I made over 20 of these. The plans I have below were just the basic concept. As I started making these I did a bit of customizing to the design to make sense in my space.
So, here’s a bit of some basic concepts to understand when making absorber panels. An absorber panel is real simple in design. All it really is is a porous bat material that a sound transverses into. Part of that energy gets trapped and transformed into heat. The remainder of the sound energy moves through, bounces off the wall and either carries on away from the absorption material or gets absorbed even further. The more panels you have the more absorption occurs.
The frequencies absorbed have to do with the thickness of the panels. If you just hang rugs and blankets high frequencies are absorbed but not much else. If you want to treat lower frequencies, double up or even triple on your absorption material. The material I recommend is insulation like rock wool. It is nicer to work with then pink stuff (pink stuff will work too).
Corner absorbers or sometimes known as bass traps (but they are just absorbers) act a bit differently but it’s still the same principle. Corners tend to have low frequency build up and can throw off the balance of low response in the rest of the space. To counter it, using like 3 or 4 bats of rock wool will absorb and break up that low energy (like throwing a pillow in a kick drum). That’s why they say treat your corners first, it makes a huge difference.
I’n no expert on acoustic treatment but here is some who is. Check out Acoustics Insider, I learned a ton and he explains the math brilliantly. A little math can really change how your room sounds. https://www.youtube.com/channel/UC57auUfJlTvIvW79pom_i1g
Anyways, here is what you will need for your build.
5. Stapler with staples.
If you want to cover the entire absorber then just make sure you compensate for the extra width. A good rule of them is you want to have about 3 inches extra per side. so if you have to wrap around a 6 inch board make sure you have 9 - 12 inches extra.
Note that the design I uploaded is a basic concept. Like I said earlier I did a bit of customizing to make it work with my space. For example, the corners are actually 16 inches instead of 24. That is so I have extra room for my other panels going up. I made gobos based on this concept that are two panels that are 36 inches sooooo...72 inches width and 48 inches in height.
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