The Pulsed Electro Acoustic (PEA) method is very common to study the transport of space charges inside dielectric. Unfortunately, the current calibration of the transfer matrix does not take into account some phenomenon as reflections, attenuation and dispersion of the pressure wave going through the sample. Analytical models of the PEA help to bring this lack of information to the matrix transfer. In this study, we first introduce an electrical PSpice model, based on analytical ones, to define a new transfer matrix of the PEA. Second, we present a new method for the deconvolution of an experimental PEA signal.