Abstract:

In the description of the acoustic fluctuation phenomena (AFP), for example, sonocavitation noise, the signals of the acoustic emission, scattering on the heterogeneity, reverberation, and others, the model of shot noise is often applied and the principle of distribution is considered to be Gaussian. This model of AFP is proposed and proven with the conjecture that the shape of the impulse depends on the time of its generation, and amplitude of the impulse is subjected to the inhomogeneous Poisson process. It was shown that the characteristic function of the linear process is an unlimited dividend and, therefore, the function of the distribution or the probability density cannot be obtained in the evident mode, even through the mixed function. The spectral function of shocks (SFS) was proposed for the investigation of the principle of distribution and for the determination of the characteristic function. The algorithm was obtained that permits finding the SFS. Komologov, Levin, and some properties of SFS as well and the results of the calculation of SFS of the different AFPs are shown.