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EE3TP4_1_SystemsOverview_Lecture 3

# EE3TP4_1_SystemsOverview_Lecture 3 - Signals and Systems A...

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A Signal is a time-varying function (e.g., voltage or other quantity) that generally carries some information The role of the System is often to extract, modify, transform, or manipulate that carried information. Signals and Systems uses abstracted mathematical models to predict what a system does to a signal. Signals and Systems Audio Amplifier v in (t) v out (t) Physical System Electronics Voltage System Input x ( t ) Output y ( t ) System Model Math “Model” Math Function e.g., linear system These overheads were originally developed by Mark Fowler at Binghamton University, State University of New York. abstraction

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Forward System Feedback speed: v ( t ) control forces: f c ( t ) The Car Cruise Control t t t external forces Example System and Signal Scenarios 1. Given a system, determine a signal that will pass through it well e.g., Communication Transmitter 2. Given a type of signal, design a system that will pass it well e.g., Audio Amplifier 3.
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