Just to be clear so everyone understand,I only use the room's regular decor when I work with "Room-Tunning".
I also want it to look like a normal room.
The reason that these acoustic "Soundpanel" was used (see previous post),was that they were available.
In addition,they were small and worked perfectly in the ceiling,..as they were white, they also disappeared against the white roof.
These have also been tested in the corners of the room,but the best result was when they were used in the ceiling.