Reddit reviews 3"x12"x12" Egg Crate Foam Acoustic Foam Tiles Soundproofing Foam High Peak/Thick, 12 Pack
We found 6 Reddit comments about 3"x12"x12" Egg Crate Foam Acoustic Foam Tiles Soundproofing Foam High Peak/Thick, 12 Pack. Here are the top ones, ranked by their Reddit score.
I don't have this problem, but you could go to a hardware/crafts store, buy some cheap foam, cover it with fabric (so it doesn't look like crap), then hang it on your walls. Should do well to dampen the sound your neighbors are hearing.
If you don't want to spend the time making them, you could spend the money
You could try acoustic panels on the shared wall.
Yes it is feasible, but I think you're overthinking it. A single sheet of plywood slightly larger than the window opening with weatherstripping around its perimeter will do just as well at making an airtight seal, then you can cover the plywood with some egg carton style acoustic foam. Basically you're making one of these acoustic panels, then sealing it over the window opening. To get the most out of it you'll need to hold the panel tight against the wall, which means screws or glue. Depending on the wall material screw holes are very easy to patch when the time comes.
https://www.amazon.com/Soundproofing-Acoustic-Eggcrate-Studio-Wedges/dp/B01EIHFOTM/ref=sr_1_4?ie=UTF8&qid=1499445396&sr=8-4&keywords=acoustic+tile
You'd need to buy enough foam and broadband absorbers, and don't forget the corners to cover everything but the prices seem ok.
To cancel all the noise you'd need a much more expensive professional solution but you're not going to be playing music, are you?
You don't need a completely silent PC for music production. Don't keep the extra hardware in the same room you're recording in and the mic simply won't pick it up.
When I did production in home honestly I just kept my pc 6 feet away from my recording "booth" and my booth was insulated drywall framed with 2*4's that were reinforced in wall with screws.
Out some of these (https://www.amazon.com/dp/B01EIHFOTM/ref=cm_sw_r_other_apa_AaJwxbPEQVYX1) in the booth and on the outside of the booth
Hope that helps
www.flagz.net for samples.. Anything post 2014 is in an even worse embodiment with no sound proofing sitting right next to my gaming pc.