Acoustic Foam panels are best for echo reduction, sound diffusion and sound absorption! The sound proof foam for wall surface area of this product is higher than egg tray due to its proper pyramid design. More the surface area better is soundproofing. Acoustic foam is a great solution for spot treating sound studios, home listening rooms, isolation booths and more room noise reducer acoustic room treatment Pyramid acoustic foam panels are a great solution for small flutter echo problem areas and when spread apart, yield beneficial sound diffusion off their exposed edges sound absorber for room. Acoustic foams are great for spot treating sound on walls. - For use in recording studios, control rooms, offices, home studios, home entertainment theaters, classrooms, YouTube video recordings, voice over studios, machine canopies , Hotels, Basements, Machine Room, Practice Rooms, Schools etc sound proof foam for wall