Specular early reflection intensity falls off with the square of distance

Evidence

From Equation 7.1, which is Equation 1.18 with the addition of the effect of surface absorption, it is clear that the intensity reduction of a specular early reflection is inversely proportional to the distance squared. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 2317

Categorization

• DEFINE: Clarifies the specular reflection distance law, modifying the inverse-square law with a surface-absorption term.