Digital Signal Processing for pune university second revised edition

by J.S. Chitode

Table of Contents Characterization of LTI-DT System Basic elements of DSP system, Advantages of DSP over analog processing, Sampling theorem, Practical sampling, Aliasing. Time domain analysis of DT system : Difference equations, Recursive solution of difference equation, Zero input response, Unit impulse response, System response to external input, Convolution sum, Total response of DT system, Causal LTI-DT system, Stability. Systems with finite duration and infinite duration impulse response, Structures for the realization of LTI-DT systems, Direct form I and II. ? Fourier Analysis of DT System DTFS and DTFT, Power and energy density of periodic and aperiodic signals, Computation of DTFT, DFT, Properties of DFT, FFT, DIT, DIF. ? DT System Analysis using Z-Transform Need of z - transform, Definition, Inverse, Properties, z-transform solution of difference equations, Connection between DTFT and z-transform, System stability and z-transform, Classification of system using pole zero plot. ? Digital Filters Realization of digital filter, Causality and its implications, Time domain equivalence criterion, IIR design by impulse invariance method, Bilinear transformation, FIR design, Linear phase conditions, Time domain equivalence method, Frequency sampling method. ? Multirate Sampling Introduction, Decimation, Interpolation, Sampling rate conversion, Polyphase implementation of filter. Applications : DAC in compact Hi-Fi systems, Acquisition of high quality data, Multirate narrowband digital filtering , Hi resolution narrow band spectral analysis. DSP Hardware Platform Introduction, Difference between microprocessor and DSPs, General architecture of DSPs. Case study of TMS320C67XX, Speech processing, Interpolation and decimation implementation, Convolution sum.

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