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EC333 DIGITAL SIGNAL PROCESSING
1. DISCRETE – TIME SIGNALS AND SYSTEMS :
Sampling of Analogue signals – aliasing – standard discrete time signals – classification – discrete time systems – Linear time invariant stable casual discrete time systems – classification methods – linear and circular convolution – difference equation representation – DFS, DTFT, DFT – FFT computations using DIT and DIF algorithms. Time response and frequency response analysis of discrete time systems to standard input signals.
2. INFINITE IMPULSE RESPONSE DIGITAL FILTERS:
Review of design of analogue Butterworth and Chebyshev Filters, Frequency transformation in analogue domain – Design of IIR digital filters using impulse invariance technique – Design of digital filters using bilinear transform – pre warping – Frequency transformation in digital domain – Realization using direct, cascade and parallel forms.
3. FINITE IMPULSE RESPONSE DIGITAL FILTERS:
Symmetric and Antisymmetric FIR filters – Linear phase FIR filters – Design using Frequency sampling technique – Window design using Hamming, Hanning and Blackmann Windows – Concept of optimum equiripple approximation – Realisation of FIR filters – Transversal, Linear phase and Polyphase realization structures.
4. FINITE WORD LENGTH EFFECTS:
Quantization noise – derivation for quantization noise power – Fixed point and binary floating point number representations – Comparison – Overflow error – truncation error – coefficient quantization error – limit cycle oscillations- signal scaling – analytical model of sample and hold operations.
5. SPECIAL TOPICS IN DSP:
Discrete Random Signals- Mean, Variance, Co-variance and PSD – Periodiogram Computation – Principle of Multi rate DSP – decimation and Interpolation by integer factors – Time and frequency domain descriptions – Single, Multi stage, polyphase structures – QMF filters – Subband Coding
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| Author: Bala 10 Dec 2007 | Member Level: Diamond Points : 1 |
TEXT BOOK:
1. John G. Proakis and Dimitris G.Manolakis, ‘Digital Signal Processing, Algorithms and Applications ‘, PHI of India Ltd., New Delhi 3rd Edition 2000.
REFERENCES:
1. Sanjit K.Mitra ‘Digital Signal Processing’, A Computer Based Approach, Tata McGraw-Hill, New Delhi, 1998.
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