DIGITAL SIGNAL PROCESSING

Unit I: Realization of Digital Systems
Introduction, direct form realization of IIR systems, cascade realization of an IIR systems, parallel form realization of an IIR systems, Ladder structures: continued fraction expansion of H (z), example of continued fraction, realization of a ladder structure, example of a ladder realization, FIR Filter Realization: Direct & Cascade, FIR Linear Phase Realization.

Unit II: Design of Infinite Impulse Response Digital Filters Introduction to Filters, Impulse Invariant Transformation, Bi-Linear Transformation, All- Pole Analog Filters: Butterworth and Chebyshev, Design of Digital Butterworth and Chebyshev Filters, Frequency Transformations.

Unit III: Finite Impulse Response Filter Design Windowing and the Rectangular Window, Other Commonly Used Windows, Examples of Filter Designs Using Windows, The Kaiser Window, Finite Word length effects in digital filters.

Unit IV: DFT & FFT Definitions, Properties of the DFT, Circular Convolution, Linear Convolution using Circular Convolution, Decimation in Time (DIT) Algorithm, Decimation in Frequency (DIF) Algorithm.

Unit V: Multirate Digital Signal Processing Introduction, Decimation, Interpolation, Sampling rate conversion: Single and Multistage, Sub band Coding of Speech signals, Quadrature mirror filters.