Skyline Diffusor

[mrspis]

" There are several major types of diffusers, each with their own strengths and weaknesses. I decided on the diffraction grating design, based on their efficiency over a broad frequency range and because they looked fairly straight forward to build. The idea is that by creating a set of grooves at various depths you can alter the phases of the scattered sound so that it can be constructively scattered in many different directions, essentially making the intensity of the reflected sound equal in the plane perpendicular to the grooves. There is an additional benefit from the fact that reflection phase grating diffusers also provide low-frequency absorption at frequencies below their useful diffusion limit. While commercially available grating diffusers are readily available (most notably from RPG Systems), they are quite expensive, running $700 or more per element for the root-19 design I'd settled on. It was late January of 2003 and I was already out of money, so I was resigned to the task of building them myself, something that became a recurring theme."


ovi bas fino nahvalise te "Phase grating" difuzore..