API reference

MaterialProperty Enum

The properties for audio materials. All properties are frequency dependent.

Enumeration Constants

MemberValueDescription
ABSORPTION
0
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.
TRANSMISSION
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.
SCATTERING
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.
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