AD-001
If a specular reflection from a hard flat surface is giving a problematic echo then an acoustic diffuser may be applied to the surface.
It will scatter sound in all directions. This is effective to eliminate pockets of noise in a room.
AD-002
Compared to a reflective surface, which will cause most of the energy to be reflected off at an angle equal to the angle of incidence.
A diffuser will cause the sound energy to be radiated in many directions, hence leading to a more diffusive acoustic space.
AD-003
Diffusers are used to treat sound aberrations in rooms such as echoes. They are an excellent alternative or complement to sound absorption because they do not remove sound energy, but can be used to effectively reduce distinct echoes and reflections while still leaving a live sounding space.