DIGITAL SIGNAL PROCESSING

Unit I: Introduction (08)
Basic elements of DSP and its requirement, Advantages of Digital over analog signal processing,
sampling theorem, sampling process and reconstruction of sampling data.
Discrete time signals & systems: Discrete time signals & systems, classification of discrete time signals
and systems, LTI systems, linear convolution, Cross Correlation, Autocorrelation.
Unit II: Z- Transforms (08)
The Z-transform: Definition, properties of the region of convergence for the Z-transform, Z-transform
properties, Inverse Z-transform, Parseval’s theorem, unilateral Z-transform.

Unit III: Discrete and Fast Fourier Transforms (12)
Definition and properties of DFT, IDFT, Relation between DFT and Z–Transform, Radix- 2 FFT
algorithms, Linear filtering methods based on DFT, circular convolution, Frequency analysis of discrete time
signals using DFT, Gortzel algorithm.

Unit IV: IIR Filter Design & Realization (12)
Filter design methods – Approximation of derivatives, Impulse invariance, bilinear transformation,

characteristics & designing of Butterworth, Chebyshev filters, frequency transformations, IIR filter structures-
Direct form I-II, transpose form, parallel form, cascade, Lattice and Lattice-ladder structures.

Unit V: FIR Filter Design & Realization (12)
Symmetric and antisymmetric FIR filters, Linear phase FIR filter, design of FIR filters using windows
(Rectangular, Bartlett, Hanning, Hamming & Blakman), frequency sampling method, FIR differentiators, FIR
filter structures.

Unit VI: Multirate DSP (08)
Introduction, Decimation by factor D, Interpolation by factor I, Sampling rate conversion by rational
factor I/D, Sub band coding of speech signals and its applications, introduction to wavelet & wavelet transform,
Introduction to DSP architecture TMS 320.
Books:
Text Books:
1. J.G. Proakis, D.G. Manolakis “Digital Signal Processing: Principles, algorithms and applications, Pearson
Education.
2. A.V. Oppenheim, R.W. Schafer, “Discrete Time Signal Processing”, Pearson Education.
3. Rabiner Gold “ Theory and Application of DSP”, PHI
4. Texas Instruments and Analog Devices DSP Chip Manuals.
Reference books:
1. Digital signal processing- A practical approach Second Edition, 2002.E. C. Ifeachar, B. W. Jarvis Pearson
Education
2. Sanjit K. Mitra , ‘Digital Signal Processing – A Computer based approach’
3. S. salivahanan, A Vallavaraj, C. Gnanapriya , ‘Digital Signal Processing’, 2nd Edition McGraw Hill.
4. A. Nagoor Kani, ‘Digital Signal Processing’, 2nd Edition McGraw Hill.
5.P. Ramesh Babu, ‘Digital Signal Processing’ Scitech