No cloth-like material on walls is used to absorb reflections of sound, it's not needed, usually a modest amount of furniture, wooden flooring and perhaps some

No cloth-like material on walls is used to absorb reflections of sound, it's not needed, usually a modest amount of furniture, wooden flooring and perhaps some curtains on the windows are enough. I think when we speak about residential buildings, the rooms are not that big and there are not a lot of people in a room at a time, so it's not really an issue. When you have a pub full of people and the owners didn't think about acoustic treatment, it's a different story of course. Rugs are not 100% coverage but the rugs that were used here in the past were maybe 90% coverage? Like not glued to the floor but covering most of it. So these are not popular anymore.