They may appear to be solid but they are not, and thus can absorb sound. The other approach is a surface that is patterned ...

Mineral wool tiles can be more expensive, but do a great job of dampening sound; foam panels, on the other hand, aren't quite as effective but are very affordable. There are many possibilities ...

Cellular cast aluminum foam, sound absorbing properties, strong yet lightweight panels, versatile material, contains up to 100% recycled content, corrosion resistant. Alusion™ Small Cell ...

It is lightweight and easy to install and is 100% recyclable. The aluminum foam panels can be resin coated, laser-cut, and water jet cut with a specialized WJ process only by Cymat Technologies ...