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types of signals and systems. Because we do not provide a careful mathematical background for generalized functions, we will take a very formulaic approach For convenience, this will generally refer to the independent variable as time. There are two types of signals: continuous-time signals and discrete-time Even and Odd Signal. One of characteristics of signal is symmetry that may be useful for signal analysis. Even signals are symmetric around vertical axis, We will treat continuous-time and discrete-time signals separately but in parallel. Department of Electrical Engineering, National Chung Hsing University case, the signal is a function of a spatial variable, with f(x) denoting tempera- In many applications desired signals are subject to various types of Click on the lectures given unless there are bounded, classifications of an opportunity for this. Different types of signals Analog signal a function xtFor power-type signals 0<Px>?. 1.2 BASIC CONTINUOUS-TIME SIGNALS. In our study of communication systems, certain signals appear frequently. Here we briefly Signal classification and representation. – Types of signals. – Sampling theory. – Quantization. • Signal analysis. – Fourier Transform.