Chapter 1 Discrete-Time Signals and Systems
Chapter 1 Discrete-Time Signals and Systems
O To understand the theory of digital signal processing and design of discrete-time systems we need to know how to mathematically represent discrete-time signals and systems. Such representations can be either in the time-domain or in the frequency domain
⚫ To understand the theory of digital signal processing and design of discrete-time systems, we need to know how to mathematically represent discrete-time signals and systems. Such representations can be either in the time-domain or in the frequency domain
Content Introduction a Discrete-time signals a Discrete-time systems a Time-domain characterization of lti discrete-time systems Digitalization of Analog Digital
Content ◼ Introduction ◼ Discrete-time signals ◼ Discrete-time systems ◼ Time-domain characterization of LTI discrete-time systems ◼ Digitalization of Analog Digital
1. 1 Introduction O A signal is a function of independent variables Depending on the nature of the independent variables and value of the function defining the signal, various types of signals can be defined
1.1 Introduction ⚫ A signal is a function of independent variables. Depending on the nature of the independent variables and value of the function defining the signal, various types of signals can be defined
1. 1 Introduction o Classification of signals 1. Analog signal-A continuous-time signal with a continuous amplitude 2. Digital signal-a discrete-time signal with discrete-valued amplitudes represented by a finite number of digits
1.1 Introduction ⚫ Classification of signals 1. Analog signal—A continuous-time signal with a continuous amplitude. 2. Digital signal—A discrete-time signal with discrete-valued amplitudes represented by a finite number of digits