I have this front door that I want to seal off. I've attached a couple images.
Currently, there's some sort of black seal around the left, right, and top edges, but I don't think it helps much to keep the sound away. The bottom has a horizontal gap about half an inch high.
I thought about using a door sweep, but those are mostly for containing weather, not noise.
Does anyone here have experience with such sound proofing or perhaps know what recording studios use for doors that could perhaps be applied to an apartment front door?