| The fraction of sound arriving at a surface that is absorbed by the material. This value is in the range 0 to 1, where 0 indicates a perfectly reflective material, and 1 indicates a perfectly absorptive material. Absorption is inversely related to the reverberation time, and has the strongest impact on the acoustics of an environment. The default absorption is 0.1. |
| The fraction of sound arriving at a surface that is transmitted through the material. This value is in the range 0 to 1, where 0 indicates a material that is acoustically opaque, and 1 indicates a material that is acoustically transparent. To preserve energy in the simulation, the following condition must hold: (1 - absorption + transmission) <= 1 If this condition is not met, the transmission and absorption coefficients will be modified to enforce energy conservation. The default transmission is 0. |
| The fraction of sound arriving at a surface that is scattered. This property in the range 0 to 1 controls how diffuse the reflections are from a surface, where 0 indicates a perfectly specular reflection and 1 indicates a perfectly diffuse reflection. The default scattering is 0.5. |