  The spectral representation is an effecient tool to explore electrical
properties of material mixtures. It separates the contributions of geometrical
topology and intrinsic properties of the constituents in the system. The aim of
this paper is to derive an expression for the spectral density representation,
which favors dielectric relaxation phenomenon. This unfamiliar form is distinct
in a way that the existing dielectric relaxation models and data analysis tools
can be employed for extracting the spectral density function of a given system.
