Frekvenčně-časová analýza signálů v prostředí Scilab a Xcos

Abstract

The aim of this thesis is to describe functions for frequency and time-frequency analysis of digital signals in Scilab/Xcos and MATLAB/Simulink. Each function is expressed by an example. These functions are used to display a frequency spectrum of a digital signal using Fourier transforms. Next, a function spectrogram was created in Scilab, equivalent to the same function in MATLAB. Spectrogram shows us the course of the frequency component of a signal in time. Results in both enviroments are compared.