2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/149746We consider the dynamic evolution of a coupled array of N multiplicative random variables. The magnitude of each is constrained by a lower bound w_0 and their sum is conserved. Analytical calculation shows that the simplest case, N=2 and w_0=0, exhibits a Lorentzian spectrum which gradually becomes fractal as w_0 increases. Simulation results for larger $N$ reveal fractal spectra for moderate to high values of w_0 and power-law amplitude fluctuations at all values. The results are applied to estimating the fractal exponents for cochlear-nerve-fiber action-potential sequences with remarkable success, using only two parameters.15 pages Latex, 1 PS figure, submitted to Phys. Rev. EAdaptation and Self-Organizing SystemsChaotic Dynamicstext