Using a unified framework and terminology, the subject surveys and discusses both the theory and practice of analog and digital signal processing. After giving the definitions of deterministic signals and random processes the Fourier analysis of LTI systems is discussed and the analysis of analog LTI systems is performed in both the time- and frequency-domains. In most cases the digital signals are generated by digitizing analog ones. Therefore, the sampling theorem, effect of quantization and the reconstruction of analog signals from their samples are studied and the A/D and D/A converters are discussed. After characterizing the discrete-time and digital signals the analysis of discrete-time and digital LTI systems are discussed, the theory of z-Transform, DFT and FFT is explained. Finally the desing of FIR and IIR filters is reviewed.
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