I live in an apartment condo. The noise from the very loud neighbour comes through the door spaces. I wish to seal off all of her noise. My walls are brick and are good. But the door going out to the common area has a varying gap around it. At the top of the door, the gap is from 1/32" to 1/4" over a 32" length. From the top of the door to the bottom of the door (not the floor), the gap is from 1/32" to 1/4 " over a 80" length. The open space from the bottom of the door to the floor is from 3/4" to 1/2" extending 32" across the door.
As well, there is a wall air conditioner I'd like to seal. I'm thinking about putting some acoustic caulking around the outside of the air conditioner (inside the house), but thought I'd mention that as well. My main concern is soundproofing the space around the door right now.
I would like to sound proof these open areas effectively. What can you suggest? Obviously, I would like to witness the effectiveness of any materiel you suggest before purchasing it if possible.