If your home is covered with flat walls, hard floors, and bare ceilings, chances are you have dealt with terrible acoustics in your house making it hard to hear your television, have a conversation, or even making the screams of children ear piercing. Luckily the addition of sound panels in your home can help alleviate these issues.
Unfortunately if you try and find some sound/acoustic panels online, they are terribly expensive; but building them yourself can be pretty affordable and importantly, customizable.
Now to construct a sound panel is very simple. You just need to: frame it, cover it, stuff it, hang it, and optionally paint it. First just determine where and how big your panel is going to be. The more surface area of the wall it covers, the better the sound treatment will be.
Construct a basic square with your lumber matching the size you wish to create, and don't forget to adjust your sizes and measurements to account for the thickness of your lumber. You can get creative with your joints when connecting the lumber. You can join them at 45 degree angle cuts, use a simple butt joint, or you can even get fancy and use some pocket holes. For some added rigidity, be sure to also use some wood glue on your joints as well.
Lay your frame on top of your laid out fabric. Then make your way around the frame folding and stapling the fabric to the back of the frame. Be sure to pull the fabric tight and snug as you don't want it loose or to have wrinkles as it won't look very good from the front.
Now gently lay strips of your rock wool to fill the entirety of the inside cavity of your covered frame. If you need to cut strips of your rock wool insulation, use a long bread knife or other serrated blade and it will make super easy work of trimming the insulation. Just be sure to go slow and make smooth cuts as you wont want to damage or compress the insulation.
Hammer in your picture hangers onto the top back of your frame by using at least two of them, one on each corner. And attach 4 of your rubber feet to each corner of your frame as you want to have an air gap between you wall and your sound panel to increase the effectiveness of sound treatment.
Find a good place on the wall and use a level to make sure your anchors are parallel with your floor and ceiling. Then simply hang your panel using the previously attached picture hangers you mounted to the back of the panel. If you are mounting directly onto drywall, be sure to use adequately size dry wall anchors.
Now if you have some artistic skills, you can easily paint or draw a design onto your newly created sound panel as it is essentially a giant canvas. It has been thought that if you cover the entire canvas in paint, it will substantially decrease its effectiveness, but I have not seen any definitive tests results.