EC2302 DIGITAL SIGNAL PROCESSING lecture notes |for ECE - V semester | by R.Anirudhan
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UNIT I DISCRETE FOURIER TRANSFORM
DFT and its properties, Relation between DTFT and DFT, FFT computations using
Decimation in time and Decimation in frequency algorithms, Overlap-add and save
UNIT II 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 – Realization
using direct, cascade and parallel forms.
UNIT III FINITE IMPULSE RESPONSE DIGITAL FILTERS
Symmetric and Antisymmetric FIR filters – Linear phase FIR filters – Design using
Hamming, Hanning and Blackmann Windows – Frequency sampling method –
Realization of FIR filters – Transversal, Linear phase and Polyphase structures.
UNIT IV FINITE WORD LENGTH EFFECTS
Fixed point and floating point number representations – Comparison – Truncation and
Rounding errors - Quantization noise – derivation for quantization noise power –
coefficient quantization error – Product quantization error - Overflow error – Roundoff
noise power - limit cycle oscillations due to product roundoff and overflow errors - signal
UNIT V MULTIRATE SIGNAL PROCESSING
Introduction to Multirate signal processing-Decimation-Interpolation-Polyphase
implementation of FIR filters for interpolator and decimator -Multistage implementation of
sampling rate conversion- Design of narrow band filters - Applications of Multirate signal