# Chapter2_st_2.pdf

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CHAPTER 2: CHAPTER 2: DISCRETE DISCRETE - - TIME SIGNALS & SYSTEMS TIME SIGNALS & SYSTEMS Lesson #4: DT signals Lesson #5: DT systems Lesson #6: DT convolution Lesson #7: Difference equation models Lesson #8: Block diagram for DT LTI systems Duration: 9 hrs Lecture #4 Lecture #4 DT signals DT signals 1. Representations of DT signals 2. Some elementary DT signals 3. Simple manipulations of DT signals 4. Characteristics of DT signals Converting a CT signal into a DT signal by sampling: given x a
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CHAPTER 2:CHAPTER 2: DISCRETEDISCRETE--TIME SIGNALS & SYSTEMSTIME SIGNALS & SYSTEMS Lesson #4: DT signals Lesson #5: DT systems Lesson #6: DT convolution Lesson #7: Difference equation models Lesson #8: Block diagram for DT LTI systems Duration: 9 hrs  Lecture #4Lecture #4DT signalsDT signals 1. Representations of DT signals 2. Some elementary DT signals3. Simple manipulations of DT signals 4. Characteristics of DT signals  Converting a CT signal into a DT signal by sampling: given x a (t)to be a CT signal, x a (nT)is the value of x a (t)at t = nT  DT signal is defined only for nan integer   n),n(x)nT(x)t(x anTta -2T -T 0 T 2T 3T 4T 5T 6T 7T . . .nTt Sampled signalsSampled signals  n …-1 0 1 2 3 4 …x[n] …0 0 1 4 1 0 … 1.Functional representation  n,02n,4 3,1n,1 ]n[x Representations of DT signalsRepresentations of DT signals 2.Tabular representation

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