Digital Signal ProcessingA significant revision of a bestselling text for the introductory digital signal processing course. This book presents the fundamentals of discretetime signals, systems, and modern digital processing and applications for students in electrical engineering, computer engineering, and computer science.The book is suitable for either a onesemester or a twosemester undergraduate level course in discrete systems and digital signal processing. It is also intended for use in a onesemester firstyear graduatelevel course in digital signal processing. 
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an excelle nt book for signal processing specially designed for extended view of digital signals and to explain there properties.
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nice
Contents
Analysis of DiscreteTime Linear TimeInvariant Systems  69 
Response  88 
The zTransform and Its Application to the Analysis of LTI  147 
Copyright  
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addition algorithm analysis applications basic called causal Chapter characteristics coefficients complex components computation Consequently Consider contains continuoustime converter convolution corresponding defined delay Determine difference equation direct discretetime signal domain effect energy equivalent error evaluating EXAMPLE exponential expressed factor Figure filter finite formula Fourier series Fourier transform frequency response given Hence ideal illustrated illustrated in Fig important impulse response input signal integral inverse linear timeinvariant system LTI system method multiplications observe obtain operation output pair performed periodic periodic signal plot poles positive practical problem processing provides quantization range realization recursive relation relationship representation represented requires result sampling sequence x(n shift Show shown in Fig signal x(n simply sinusoidal sketch Solution spectral spectrum stable structure system function unit circle values xa(t yields ztransform zero