Signal Processing and Linear Systems-B.P.Lathi copy

Signal Processing and Linear Systems-B.P.Lathi copy - S...

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Signal Processing and Linear Systems 002110242 E.T.S.I.I. e I.T.lI.T.I.G.E.T. BIBLIOTECA UN / EHU UBURUTEGIA N2 Registro . . :~~.Zl. ... fecho .~;;.\;;Q:L ... N2 Entrada . .. ~."!lJ.& .... Dplo .. ~.'"t.f.d .. I ') I ~r; ( " '...! L Ii T S19 . .1:2.'<0.[: . .... ; •• ':':.: •• :; •••• ; ••• • .. ••••• . ... ··• . . ··•·•• . .
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- Signal Processing and Linear Systems B. P. Lathi ij[] Berkeley Cambridge Press Carmichael, California
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SIGNAL PROCESSING AND LINEAR SYSTEMS Copyright @1998 by Berkeley-Cambridge Press. All rights reserved. Printed in the United States of America. No part of this book may be used or reproduced in any form or by any means without written permission, except in the case of brief quotations embodied in critical articles and reviews. For information address: Berkeley-Cambridge Press P.O. Box 947, Carmichael, CA. 95609-0947 10 9 8 7 6 5 4 3 2 Library of congress cataloging in pUblication data Lathi, B. P. (Bhagawandas Pannalal) Signal Processing and Linear Systems Includes bibliographical references and index. 1. Signal processing--Mathematics. 2. System analysis 3. Linear time-invariant systems. 4. Digital filters (Mathematics) I. Title. TK5102.9.L38 1998 ISBN 0-941413-35-7 621.382'2-dc21 Cover and graphic design by Jeff Clinton. Printed in the United States of America iv 98-10609 CIP - Preface This book presents a comprehensive treatment of signals and linear systems suitable for juniors and seniors in electrical engineering. The book contains most of the material from my earlier popular book Linear Systems and Signals (1992) with added chapters on analog and digital filters and digital signal processing. There are also additional applications to communications and controls. The sequence of topics in this book is somewhat different from the earlier book. Here, the Laplace transform follows Fourier, whereas in the 1992 book, the sequence was the exact opposite. Moreover, the continuous-time and the discrete-time are treated sequen- tially, whereas in the 1992 book, both approaches were interwoven. The book contains enough material in discrete-time systems so that it can be used not only for a traditional course in Signals and Systems, but also for an introductory course in Digital Signal processing. A perceptive author has said: "The function of a teacher is not so much to cover the topics of study as to uncover them for the students." The same can be said of a textbook. This book, as all my previous books, emphasizes the physical appreciation of concepts rather than mere mathematical manipulation of symbols. There is a temptation to treat an engineering subject, such as this, as a branch of applied mathematics. This view ignores the physical meaning behind various results and derivations, which deprives a student of intuitive understanding of the subject. I have used mathematics not so much to prove an axiomatic theory as to enhance the physical and intuitive understanding. Wherever possible, theoretical results are interpreted heuristicallyt and are supported by carefully chosen examples and analogies.j: Notable Features The notable features of the book include the following: 1. Emphasis on intuitive and heuristic understanding of the concepts and physi-
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