Signals and Systems

This textbook offers a comprehensive survey of continuous and discrete time linear systems. It introduces and treats the topics separately to aid students' understanding and to allow the discrete time material to build naturally on the continuous time topics.;It discusses zero-rated response and zero-input response and relates these concepts to classical forced/transient response analysis. Routh array is discussed introducing stability and providing a clear test for it. A state variables treatment is used to introduce discrete time topics for easy transition from continuous time to discrete time treatment.;The new edition includes many more design problems and examples and takes a practical approach to Fourier methods. More design applications illustrate textual material and aim to provide insight into the application of tools and techniques for solving practical engineering problems.;The material on modelling is expanded in an appendix and more attention is paid to signal processing applications of the FFT. New sections on "Energy and Power Spectral Densities" and "System Simulation" are included and network theorems in terms of Laplace transforms are reviewed in a new chapter.