Acoustic door blanket panels overlap the door and extend beyond the frame to prevent acoustical leaks.
Soundproof door panel.
Soundproofing doors is easier when you understand the acoustics involved.
If adding many soundproofing elements to your door seems like too much work try adding an acoustic door panel.
They have a cut out for the door handle slits to fit around the hinges and velcro sewn onto the back for quick and easy installation.
To soundproof a door install a curtain rod over the back of the door and get a heavy fabric drape to hang from the rod.
To soundproof a door make it structurally strong enough to block noise by replacing it with a solid core door or by adding mass loaded vinyl soundproof blankets and panels to the existing door.
You can also coat the door with sound absorbing paint which can reduce external noise by nearly 30.
Magnetic door gaskets only work on doors which are built into metal frames so they aren t a suitable method of soundproofing for most doors.
Then seal the gaps with a door gasket door sweep or spray foam to prevent air leaks.