Some recent and stylish acoustic treatments seen on Instagram. You can make your environment sound better and look better for the same price. These products from acoustic specialists around the world might give you some ideas. From Whisperwool Akustik
If you share walls, you probably share noise. If you get a lot of unwanted noise from your neighbors, they’re probably getting some of your noise, too. Ask if they’re bothered by anything and let them know what you hear,
Vintage noise-control information Maybe you don’t have a immediate need for it, but the web offers historical references for acoustical applications. You can find some of it in the public domain at the Internet Archive. Some of the documents are