In this chapter, we go back to the study of discrete-time signals, this time focusing on the frequency domain. We will see that periodic discrete-time signals can be expanded in a finite Fourier sum ...

we notice that such a characterization in the frequency domain depends on the continuous variable ?. This implies that the Fourier transform, as it is, is not suitable for the processing of ...

Our next problem is to convert the coordinate sequence into a parametric function that generates the same sequence. The simplest way of doing this is to use the Discrete Fourier Transform function ...

A key algorithm that quietly empowers and simplifies our electronics is the Fourier transform, which turns the graph of a signal varying in time into a graph that describes it in terms of its ...