Office Room Soundproof

https://www.goodreads.com/topic/show/20054689-stc-soundproofing---making-use-of-rubber-soundproofing-noise-insulation

You have a rock band, as well as no location to practice. Well, you might exercise in your cellar, garage, or room yet you live in a condominium, or a detached home with next-door neighbors crowding you on both