Szukana fraza: [Abstract = "A signal being a model of white noise in the time domain is proposed. It has the form of an infinite sequence of Dirac's impulses with random, Poisson\-distributed distances between them. Then, the influence of two parameters, existing during a realization, on the form of the two\-sided power spectral density is discussed. These quantities are the length of impulses and the average distance between them. Finally, the form of the power spectral density for a signal being a realization of white noise in the time domain, performed on the basis of the presented definition, is shown."]