I am in process of treating my new studio space and I need some help with it. The acoustic diffusers(Rectangle 23″x45.5″) GIKAcoustics is providing ranges from 70hz to 20k - the only reason I am not able to buy from them because the are literally on the other side of the world for me.
I have been studying on how to DIY this thing but the only thing that I am worried on how to cover the frequency range?
Check check out this perma link, the calculations I am trying to use with this calculator or with QRDude either.
If you scroll down, jhbrant has other links and states about 2 octaves between 500 Hz to 2K or 1K to 3K.
As I recall, this is pretty much the general range Ethan suggested. Too low or too high is either not desirable or effective or something like that. Ethan's Real Traps sells diffusors that combine bass trap qualities so you should check them out too. realtraps.com/diffusor.htm
I don't know that calculator, but assuming it works you should aim for a diffusing range between 600-800 Hz up to 2.5-3.5 KHz. So that means wells about six inches deep that are 1-2 inches wide. Or just copy the dimensions of a commercial diffuser by a major vendor.
If you want to copy GIK's you'll probably need to get their help. The GIK does not look like a QRD diffusor and I don't understand how the GIK works; their website does not explain or show any detailed test results. If you go with a QRD, there are plenty of resources as opposed to the GIK, which for all I know, may not even work.
talha, you probably realize by now that diffusers are complex business. If you're really handy with a table saw then make a regular well-type diffuser. If not, just buy one. I recommend Real Traps', of course, but also because they're modeled after an industry-standard design based on verifiable research and both diffuse and absorb. Maybe those diffusers you've linked to create a true diffuse field but I've never seen any proof.
LOL, I never use this forum to promote RealTraps. Well, not too much, anyway! But I'm still active with the company as an employee. So I still care. But I've said this many times: I'd rather see someone buy treatment from a competitor, or build their own, than go without. I've linked to the QRDude site many times myself.