Likely culprits include electrical outlet and switch boxes gaps behind baseboards and hvac vents.
Soundproof grow room.
The entire room needs soundproofing.
Soundproofing a room can help block out the din of traffic sirens airplanes honking horns and other outdoor noises.
One option would be to hang up several heavy vinyl curtains.
When soundproofing walls and ceilings between rooms the first thing to look for is air channels.
Sound proof the walls and floor of the entire room.
Air is the best vehicle for sound and any gaps or openings that let air through will also usher sound directly into the room.
So i want to add some sound proofing to the walls and door.
I have a 10 x 12 x 7 1 2 grow room with like a shit load of fans and a c running it sounds like a wind tunnel outside the growroom door.
And if the noise is coming from within a room such as a loud sound system.