I built a media room and started looking at some of the acoustic companies but was totally turned off by them. Many quoted a high fee just to tell me what they were going to sell me. When I started talking to acoustical engineers I found that most of the prepackaged material sold by these companies were no better than off the shelf products at 5 to 10 times the price. Acoustic caulk at 30 to 50 bucks a tube.
There are many techniques I used. Double drywall on ceiling and walls. Angled ceiling for sound reflection. Rubber strips on furring strips in the ceiling to separate the ceiling from the drywall. On the floor a layer of cork covered by second subfloor. Fiber commercial pad under carpet. Between studs glue in sheets of thin insulation board and use blown in insulation. Where wood meets wood use a concrete synthetic caulk. Good luck
There are many techniques I used. Double drywall on ceiling and walls. Angled ceiling for sound reflection. Rubber strips on furring strips in the ceiling to separate the ceiling from the drywall. On the floor a layer of cork covered by second subfloor. Fiber commercial pad under carpet. Between studs glue in sheets of thin insulation board and use blown in insulation. Where wood meets wood use a concrete synthetic caulk. Good luck