Hello
I currently live in a small rental apartment, 12 feet wide and 15 feet long (3.67m x 4.65m) and the ceiling is 7.61 feet(2.32m). The kitchen is on the back wall and my studio/battlestation/home theater is on the front wall.
So far i placed some 4inch(10cm) thick acoustic panels on the first reflections on the sidewalls and in the ceiling and a combination of foam and basstrap panels in the corners that where feasible.
How can one figure out if further treatments are necessary and if so what treatments to focus on?