This thoroughly revised and updated edition provides a comprehensive treatment of continuous and discrete-time signals and linear-time invariant systems. Salient Features New Chapter on Sampling. Latest computational algorithms of FFT presented in a simple style. Separate chapter on assorted topics includes frequency response, Bode plots, block diagram, and signal flow graphs. Includes a chapter on MATLAB tools detailing its application to various design and analysis examples of digital filters. Pedagogy includes: 175 Solved examples 220 Exercises problems