Signals and systemsThis volume provides a firm foundation in the most important methods of modern signal and systems analysis. Develops in parallel the methods of analysis for continuoustime and discretetime signals and systems. 
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Review: Signals and Systems
User Review  Barry  GoodreadsOppenheim gives a thorough treatment of Fourier analysis in both discrete and continuous fields, but sometimes does it in a unnecessarily verbose manner. Still possible to learn most important concepts from this book. Read full review
Contents
Signals and Systems  7 
Linear TimeInvariant Systems  69 
Fourier Analysis for ContinuousTime  161 
Copyright  
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amplitude modulation approximation Bode plot Butterworth filter cascade causal LTI system Chapter closedloop poles closedloop system complex exponentials continuoustime signal continuoustime system corresponding demodulation depicted in Figure difference equation differential equation discrete discretetime Fourier transform discretetime LTI system discretetime signals discretetime system example expression feedback system finite firstorder system Fourier analysis Fourier series coefficients Fourier series representation frequency response given in eq H(co H(Sl illustrated in Figure impulse response impulse train input x(t integral interval Laplace transform linear combination lowpass filter LTI system described magnitude modulating signal multiplied Nyquist obtain partial fraction expansion periodic convolution periodic signal periodic with period phase polezero plot problem root locus splane secondorder system Show shown in Figure signal x(t signal x[n signals and systems sinusoidal Specifically spectrum stable step response system function system of Figure system with impulse unit circle unit impulse values X(co X(Sl ztransform zero