Course Learning Objectives:
This course will enable students to
• Simulate discrete time signals and verification of sampling theorem.
• Compute the DFT for a discrete signal and verification of its properties using MATLAB.
•Find solution to the difference equations and computation of convolution and correlation along with the verification of properties.
• Compute and display the filtering operations and compare with the theoretical values.
• Implement the DSP computations on DSP hardware and verify the result
Laboratory Experiments
Following Experiments tobe done using MATLAB/ SCILAB/OCTAVE or equivalent:
1. Verification of sampling theorem (use interpolation function).
2 Linear and circular convolution of two given sequences, Commutative, distributive and associative property of convolution.
3. Auto and cross correlation of two sequences and verification of their properties
4. Solving a given difference equation.
5. Computation of N point DFT of a given sequence and to plot magnitude and phase spectrum (using DFT equation and verify it by built-in routine).
6. (i) Verification of DFT properties (like Linearity and Parseval 's theorem, etc.) (ii) DFT computation of square pulse and Sinc function etc.
7. Design and implementation of Lowpass and High pass FIR filter to meet the desired specifications (using different window techniques) and test the filter with an audio file. Plot the spectrum of audio signal before and after filtering.
8. Design and implementation of a digital IIR filter (Low pass and High pass) to meet given specifications and test with an audio file. Plot the spectrum of audio signal before and after filtering.
Following Experiments to be done using DSP kit
9. Obtain the Linear convolution of two sequences.
10. Compute Circular convolution of two sequences.
11. Compute the N-point DFT of a given sequence.
12 Determine the Impulse response of first order and second order system.
13. Generation of sine wave and standard test signals
Course Outcomes:
On the completion ofthis laboratory course, the students will be able to:
1. Understand the concepts of analog to digital conversion of signals and frequency domain sampling of signals.
2 Model the discrete time signals and systems and verify its properties and results.
3. Implement discrete computations using DSP processor and verify the results.
4. Realize the digital filters using a simulation tool and analyze the re sponse of the filter for an audio signal.
5. Write programs using Matlab/Scilab/Octave to illustrate DSP concepts.
Conduct of Practical Examination:
1. All laboratory experiments aretobe included for practical examination.
2 Strictly follow the instructions as printed on the cover page of answer script for breakup of marks.
3. Change of experiment is allowed only once and Marks allotted to the procedure part to be made zero.
Reference Books:
1. Vmay K Ingle, John G Proakis, Digital Signal Processing using MATLAB, Fourth Edition, Cengage India Private Limited, 2017.