Implementation and visualization of edge diffraction with image-source method

摘要

Traditional image-source method for room acoustic modeling neglects both diffraction and diffusion. In this studythe image-source method is evolved to also include edge diffraction as diffractive image sources. Methods to finddiffracting edges from a geometric model of a room, and to visualize diffracted image sources are presented. Issues tolimit computational complexity and memory usage in image-source method are reviewed and implemented. Diffractiveimage sources are visualized for two test cases, and impulse responses are calculated and compared with measuredones.