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
DiscreteTime Signals and Systems  41 
Problems  129 
The zTransform and Its Application to the Analysis of LTI  147 
Copyright  
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adaptive addition algorithm analog analysis applications autocorrelation band basic bits called causal Chapter characteristics coefficients complex components computation condition Consequently consider converter convolution corresponding defined described desired Determine difference equation direct domain effect equal equation equivalent error estimate example expressed factor Figure FIR filter Fourier transform frequency response given Hence illustrated in Fig implementation impulse response input input signal integral interpolation inverse lattice length linear lowpass magnitude method multiplications noise observe obtain operations output parameters performed periodic phase points poles positive practical problem provides quantization random range realization recursive relation relationship represents requires result sampling sampling rate sequence x(n Show shown in Fig signal signal x(n simply sinusoidal Solution specifications spectrum structure system function unit circle values window yields ztransform zero