This new (fourth) edition contains a 36-page discussion on window functions and additional examples using the MATLAB fft and ifft functions. As in the previous (third) edition, this text contains a comprehensive discussion and numerous illustrative examples on continuous and discrete time signals and systems with many MATLAB scripts and Simulink models. Contents: Elementary Signals, Laplace transformation and its Inverse, Circuit Analysis with the Laplace transformation, State-Space, Impulse Response and Convolution, Fourier Series and Transform, Discrete-Time Signals and the Z transform, Discrete Fourier Transform and the FFT, Design of Analog and Digital Filters, and Window Functions. Ideal for self-study by students and working professionals.