Sound Dispersal and Insulation are difficult to achieve. These, definitely, help.
You should check out some vids about Sound Dispersal. (There are some good ones.) Then, You can make realistic plans about Your Space and what is needed.
I am going to use These as a layer inside home made insulation panels (using Rock Wool, Plywood and covering, too.
The Melamine can break, easily. So, careful handling is needed.