Flicker noise in the Laplace space

The problem is analyzed of the description of flicker noise in the Laplace space, using the white noise filtration by an electrochemical cell whose im pedance is determined by a generalized Warburg impedance. The spectral dens ity of a flicker-noise process in the Laplace space is not only inversely p roportional to the operational frequency, but is also directly proportional to the logarithm of operational frequency related to the characteristic fr equency of the process. As the flicker noise is widespread in engineering d evices, technological processes, and natural phenomena, the result obtained may find wide practical applications, because a combined analysis of flick er noises in the Fourier and Laplace spaces provides an in-principle possib ility for eliciting an important of flicker noise, namely, the effective di ffusion relaxation time (or characteristic frequency of the process).