(5061204-A) Bio signal Processing
Teaching scheme: 3 lectures/week Credits: 3
Exam scheme: Paper- 100 marks
1.Introduction: Basic elements of DSP, Comparison between DSP and Analog
Signal Processing, applications of DSP.
2. Discrete Time Signals and Systems: classification of signals-continuous and discrete time signals,
periodic and a periodic signals, even and odd signals, energy and power signals, operations on
sequences- shifting, folding, addition, multiplication, scaling, etc. classification of systems- linear vs.
nonlinear ,time variant vs. time invariant, causal vs. noncausal , stable vs. unstable system, impulse
response, convolution, sampling process, aliasing, antialiasing filter, reconstruction, correlationautocorrelation,
cross correlation.
3. Transform domain techniques: Discrete Fourier Transform(DFT), DFT properties, Inverse DFT, DFT
leakage, FFT algorithm, Z-transform, Region of convergence(ROC), Z-transform properties.
4. Basics of Digital Filtering: Digital filter, types of digital filters, transfer function, Z-plane pole-zero
plot.
FIR Filters: characteristics of FIR filters, smoothing filters, Hanning filter, Notch filter, Window design
technique, frequency sampling method, derivative filters, removal of noise, motion artifacts from ECG
signal, removal of baseline drift in ECG using different FIR filters.
IIR Filters: General equation of IIR filters, integrators, Mapping between S-plane and Z-plane. Bilinear
transformation method, removal of high frequency noise and periodic events using different IIR filters.
Integer filters: basic design concept, low-pass and high-pass filters, band pass and band reject filters,
biomedical applications.
Adaptive Filters: basic concept, principal noise cancellation model, removal of periodic events using
adaptive cancellation, adaptive cancellation of maternal ECG from Fetal ECG of interest.
5. Data reduction techniques, Finite word length effects. Commercial DSP processors.
Text/Reference Books :
1. Willis J. Tompkins, ‘Biomedical Digital Signal Processing’, (Prentice Hall of India Pvt. Ltd. New
Delhi) (1993)
2. Oppenheim & schafer, ‘Digital signal processing’ (Prentice Hall)
3. Sanjit K Mitra, ‘Digital signal processing’ (Tata Mcgraw-hill Publishing company ltd.)
Reference : http://www.unipune.ernet.in/stud_info/Syllabi/Syllabus_2008.html
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