Written by the renowned authors in the field, this volume provides coherent treatment of the theory of discrete-time linear systems, filtering, sampling and discrete-time Fourier analysis and provides the knowledge necessary for an appreciation of the wide scope of applications for discrete- time signal processing. After the classic-text Digital signal processing written in 1975 they have come out with this book with a completely up to date and thorough treatment of fundamentals of this field. Suitable for undergraduate/postgraduate courses in digital signal processing, this text is accessible to students with a background in advanced calculus, complex variables and linear systems theory for continuous- time signals. However it requires no prior knowledge of discrete-time signals, Z-transforms or discrete Fourier transforms.