Hi everyone! just want to seek your expertise and knowledge regarding building a control room. I want to seperate the musical instruments from the my recorder so i want to build a control room.. The problem is sound proofing, i can't make a concrete divider so im planning to make a room out of wood. What ways can i make sound proofing possible or if not limit the sound of band instruments from entering the control room. I have something on my mind I dont know if it will work. Im planning to put inside the plywood divider sandstone place in small bags to compress the space. outer portion il put rubber , fiber glass etc. also im planning to put a window. thanks.