We are a group of people setting up a small rehearsal room for bands, mainly it will be young kids and teenagers that will use this room. We want the acoustics to be as good as we possibly can, we thought first an about covering the room with foam, but after some research online we found out it would probably be best to build our own acoustics panels with wool insulation.
Drawing of the space: Dimensions in CM. Lofthæð= Height Gluggar = Windows
There is also this small space within the bigger room where we wanna have a control room with a computer, audio interface and studio monitors.
Panorama picture of the space
What we thought about doing is:
What I would like to know, are we heading in the right direction?
there are also 2 windows in the room that we will close up and I was thinking maybe having diffusers where the windows are, Maybe that's not a good idea?
Also regarding bass traps would you put them in every corner of the room?
Looks like you are going in the right direction. Diffusion is good, especially is you are going to record live. (See Ethan's video re. his diffusors but sorry I don't have the link handy).
For practice rooms, I feel absorbers on the walls like you have them will quiet reflections and allow musicians to clearly localize the other instruments. Alternate panels on opposing walls. Ceiling clouds or other treatment will help too. This might be all you need.
Bass traps will help to tame room modes so if you have the space and $ go for it...and remember, a rectangular room has 12 corners, not just 4. You can also extend the LF performance of your wall panels (at least 4" thick) by mounting them spaced 4" away from the walls.