Guitar center sells individual foam panels and "Studio Kits" for doing lager areas. The foam panels used to sell in the low $20s range but now go for around $35 (demand?).
Walk around the room clapping your hands. You are looking for areas with pronounced echoes (you’ll know when you hear them). Affix a single panel to stop the echo then repeat until all reflective junctions neutralized.
Walk around the room clapping your hands. You are looking for areas with pronounced echoes (you’ll know when you hear them). Affix a single panel to stop the echo then repeat until all reflective junctions neutralized.