Buy High End Diffusors from Advanced Acoustics, manufactured and built in the UK. Call today on 01623 643609 for more information. While absorption is vital for any room an area that can’t be ignored is diffusion. Diffusion is the even spreading of sound waves from a direct source. So if you have a small space diffusion can give the idea of a room being larger than it actually is by providing increased natural ambience. By having no absorption or diffusion installed in a space speech intelligibility is reduced and sound quality is degraded and while absorbent materials will help a great deal in solving that dedicated well designed diffusion such as our QRD Diffuser will be much more effective.