Materials
Materials are properties that get assigned to the various triangles in the 3D Scene. These work in the same sense of how one applies materials to objects in a 3D editor or game engine, but instead of the materials looking visually different, they cause the rendered IRs or real-time simulation to sound different.
Impulse materials contain the following information: - Absorption: Nine values that correspond to how much sound energy gets absorbed when reflecting off a surface with the given material assigned. Increasing these values make the sound dampen the audio more, and decreasing it reduces this dampening. - Diffusion: A single value which adjusts the randomness of the reflected sound energy. - Viewport Color: The color of the material when it's assigned to geometry in the 3D scene.