EC3492 Digital Signal Processing Study Materials
Anna University – EC3492 Digital Signal Processing Regulation 2021 Syllabus , Notes , Important Questions, Question Paper with Answers Previous Year Question Paper.
UNIT I DISCRETE FOURIER TRANSFORM EC3492 Digital Signal Processing Syllabus
Sampling Theorem, concept of frequency in discrete-time signals, summary of analysis & synthesis
equations for FT & DTFT, frequency domain sampling, Discrete Fourier transform (DFT) – deriving
DFT from DTFT, properties of DFT – periodicity, symmetry, circular convolution. Linear filtering using
DFT. Filtering long data sequences – overlap save and overlap add method. Fast computation of
DFT – Radix-2 Decimation-in-time (DIT) Fast Fourier transform (FFT), Decimation-in-frequency (DIF)
Fast Fourier transform (FFT). Linear filtering using FFT.
UNIT II INFINITE IMPULSE RESPONSE FILTERS EC3492 Digital Signal Processing Notes
Characteristics of practical frequency selective filters. characteristics of commonly used analog filters
– Butterworth filters, Chebyshev filters. Design of IIR filters from analog filters (LPF, HPF, BPF, BRF)
– Approximation of derivatives, Impulse invariance method, Bilinear transformation. Frequency
transformation in the analog domain. Structure of IIR filter – direct form I, direct form II, Cascade,
parallel realizations.
UNIT III FINITE IMPULSE RESPONSE FILTERS EC3492 Digital Signal Processing Important Questions
Design of FIR filters – symmetric and Anti-symmetric FIR filters – design of linear phase FIR filters
using Fourier series method – FIR filter design using windows (Rectangular, Hamming and Hanning
window), Frequency sampling method. FIR filter structures – linear phase structure, direct form
realizations
UNIT IV FINITE WORD LENGTH EFFECTS EC3492 Digital Signal Processing Question Bank
Fixed point and floating point number representation – ADC – quantization – truncation and rounding
– quantization noise – input / output quantization – coefficient quantization error – product quantization
error – overflow error – limit cycle oscillations due to product quantization and summation – scaling to
prevent overflow.
UNIT V DSP APPLICATIONS EC3492 Digital Signal Processing Question Paper
Multirate signal processing: Decimation, Interpolation, Sampling rate conversion by a rational factor
– Adaptive Filters: Introduction, Applications of adaptive filtering to equalization-DSP ArchitectureFixed and Floating point architecture principles
| Syllabus | Click Here |
| Notes | Click Here |
| Important Questions | Click Here |
| Previous Year Question Paper | Click Here |
| Question Bank | Click Here |
TEXT BOOKS: EC3492 Digital Signal Processing Notes
1. 1.John G. Proakis and Dimitris G.Manolakis, Digital Signal Processing – Principles,
Algorithms and Applications, Fourth Edition, Pearson Education / Prentice Hall, 2007.
2. 2.A. V. Oppenheim, R.W. Schafer and J.R. Buck, ―Discrete-Time Signal Processing‖, 8th
Indian Reprint, Pearson, 2004.
REFERENCES EC3492 Digital Signal Processing Important Questions
1. Emmanuel C. Ifeachor& Barrie. W. Jervis, “Digital Signal Processing”, Second Edition,
Pearson Education / Prentice Hall, 2002.
2. 2.Sanjit K. Mitra, “Digital Signal Processing – A Computer Based Approach”, Tata Mc Graw
Hill, 2007.
3. 3.Andreas Antoniou, “Digital Signal Processing”, Tata Mc Graw Hill, 2006.
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