Signal processing is the field that is concerned with the analysis, modification and synthesis of signals that represent information about the behavior or characteristics of some phenomenon. It is a subfield of information engineering, electrical engineering, and mathematics. Signal processing techniques serve to improve signal transmission fidelity, subjective quality, storage efficiency, and detect or emphasize signal characteristics that are of particular interest. Signal processing can be of different kinds based on its application, such as analog signal processing, discrete-time signal processing, continuous-time signal processing, digital signal processing, etc. Such techniques are useful in image and video processing, wireless communication, process control and audio signal processing, besides several other important applications. Different approaches, evaluations, methodologies and advanced studies on signal processing have been included in this book. There has been rapid progress in this field and its applications are finding their way across multiple industries. With state-of-the-art inputs by acclaimed experts of this field, this book targets students and professionals.