The entire range of elementary and advanced topics in digital signal processing is covered comprehensively in this text, from filter design and spectrum analysis to digital hardware implementation and speech and radar processing.Chapters are devoted to the theory of discrete-time linear systems, theory and approximation of finite duration impulse response digital filters, finite word length effects in digital filters, spectrum analysis and the Fast Fourier Transform. It provides global introduction to the theory of Two-Dimensional Signal Processing, Digital Hardware, Special Purpose Hardware for the FFT, General Purpose Hardware for Signal Processing Facilities, Applications of Digital Signal Processing to Speech as well as Applications to Radar.