A signal s(t) may be classified by identifying certain characteristics that serve to predict its behavior or appearance, to verify computational results and in many cases, to greatly simplify the mathematics involved in signal analysis. This chapter defines several important categories of signals, each of which describes some significant characteristic, which, in turn, may dictate the mathematical approach one might take in signals analysis. Related computations and practical MATLAB examples are presented for each signal type.
The list of categories shown below summarizes the kind of characteristics that could be identified for a signal s(t). These classifications are not all mutually exclusive, and it is expected that every signal s