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Unformatted text preview: Signal and Systems Introduction to Signals and Systems February 10, 2012 Veton Këpuska 2 Introduction to Signals and Systems Introduction to Signals and Systems as related to Engineering Modeling of physical signals by mathematical functions Modeling physical systems by mathematical equations Solving mathematical equations when excited by the input functions/signals. February 10, 2012 Veton Këpuska 3 Modeling Engineers model two distinct physical phenomena: 1. Signals are modeled by mathematical functions . 2. Physical systems are modeled by mathematical equations . What are Signals? February 10, 2012 Veton Këpuska 4 Signals Signals , x(t), are typically real functions of one independent variable that typically represents time ; t . Time t can assume all real values: ∞ < t < ∞, Function x(t) is typically a real function. February 10, 2012 Veton Këpuska 5 Example of Signals: Speech February 10, 2012 Veton Këpuska 6 Example of Signals EKG: February 10, 2012 Veton Këpuska 7 Example of Signals: EEC February 10, 2012 Veton Këpuska 8 Categories of Signals Signals can be: 1. Continuous, or 2. Discrete: T – sampling rate f – sampling frequency – 1/T...
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This note was uploaded on 02/10/2012 for the course ECE 3111 taught by Professor Earles during the Fall '09 term at FIT.
 Fall '09
 EARLES

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