Request for assistance please room treatment


I do have it treated now, but I don't think it's correct. I need to treat it properly. I've tried a multitude of different positions, absorption, diffusion, trapping, etc. and my walls are starting to look like swiss cheese. I'm at the point now where I need to strip the room, putty, sand, and paint. But when I re-install the room treatments, they have to go in the correct position the first time. This is where your assistance comes in. I've tried many different web sites and so on, but it all seems best guess. I'm hoping to lean upon your "experience".
My room is 22'long, 11'wide, and 7'4" high, and is in a finished concrete basement. I look forward to reading your suggestions.
Thank You.
128x128shawnlh

Showing 1 response by ohlala

I have gone so far as to reading Master Handbook of Acoustics, watching lectures and doing room measurements. For the novice, like you and me, it takes trial and error. The initial big deal seems like speaker positioning, then addition of acoustic treatments. Its important to keep in mind that acoustics behavior changes a lot depending on frequency. Simplified, treating high frequencies, which behave more like rays reflecting off boundaries is easier and very different from low frequencies which are subject to room modes, while "middle" frequencies act like waves. Acoustic management also has to be split up in both frequency and time domains, which are interrelated.

I'm with Richz (of course he is an expert and I am not) and also somewhat disagree about the SPL meter alone. Acoustic software like Room EQ wizard with microphone, and usb audio interface yields more precise, more accurate and more user-friendly results along with reverberation time information. IMO well worth the relatively modest extra cost.

You can look at bobgolds (online) room acoustic calculator to get some idea what you are dealing with but its not going to be perfectly accurate.