What's the best way to soundproof a room on budget

b_limo

What’s the best way to soundproof a room on budget

I’m starting to research ways to reduce sound transmission through a wall

If the common wall between you is "drywall’ on your side (we call it "Gyprock Sheet" in Australia).
You should remove it your side, put compressed "pink batts" (insulation) in the cavity all over, and then new "Dry Wall" nailed back over it to compress the pink batts in the cavity and paint the new wall. I held the batts in place with string thumb tacked into the wood battens while the new drywall sheets were nailed up.

Cost
"dry wall cheap as **** so are pink batts, and you don’t see anything, looks like it did.

Cheers George

I want to give you some suggestion which is very important for you. I think you can use some of noise barrier material which is most effective for you. I use insulated tarps for me and it is very nice working.

@b_limo   Appreciate your contribution. To have value the batts have to be cut just right to give a secure “press fit”. There will not be any need of support before adding drywall. Ensure the batts are slightly thicker than the studs. The you have the benefit of damping the drywall with the pressure of the batts. All this will pale in comparison to 5/8 Quietrock smply attached via green glue. No nails. If dabs of a different industrial glue are required  for strength, use one that remains resilient. This type of adhesive is readily available. 

If you want to go cheap-but effective. Use 50 year asphalt roofing shingles glued onto the drywall. Add layers as needed. An old favorite of diy speaker builders. Cheap,done right, very effective. Cheers and have fun. Use a heavy layer of plastic sheathing to contain the smell. Decorate to taste. Be creative! Cheers. Pete