Digital Signal Processing

By Prof.C.S. Ramalingam   |   IIT Madras
Learners enrolled: 368
ABOUT THE COURSE: This course will introduce you to the basics of discrete-time sequences, z-transform, frequency response of discrete-time systems, sampling, and the DFT. INTENDED AUDIENCE: UG students in ECE/EEE PREREQUISITES: Networks and Systems INDUSTRY SUPPORT: Jasmine InfoTech
Course Status : Upcoming
Course Type : Core
Duration : 12 weeks
Start Date : 23 Jan 2023
End Date : 14 Apr 2023
Exam Date : 29 Apr 2023 IST
Enrollment Ends : 30 Jan 2023
Category :
  • Electrical, Electronics and Communications Engineering
  • Communication and Signal Processing
Credit Points : 3
Level : Undergraduate

Page Visits

Course layout

Week 1:   Introduction to discrete-time sequences, operations on the independent variable, elementary signals: unit step, dirac delta Week 2:   Elementary signals: exponentials, similarities and differences between CT and DT sinusoids, introduction to systems and their properties
Week 3: LTI systems, convolution Week 4:   Definition of the z-transform, region of convergence, simple examples, DTFT as a special case of the z-transform
Week 5:   Properties of the z-transform (1)
Week 6: Properties of the z-transform (2), inverse z-transform Week 7:   Sequences having DTFT but no z-transform, response to suddenly applied inputs, response to A cos(ω_0 n+θ)
Week 8:   Frequency response of LTI systems with rational transfer function, magnitude response
Week 9:   Phase response, allpass filter, group delay, zero-phase filtering
Week 10: Linear phase
Week 11: Sampling Week 12: Discrete Fourier Transform

Detailed syllabus

Thanks to the support from MathWorks, enrolled students have access to MATLAB for the duration of the course.

Books and references

Discrete-Time Signal Processing by Alan V. Oppenheim and Ronald W. Schafer, 3rd edition, 2010, Prentice Hall, Upper Saddle River,NJ.

Digital Signal Processing by John G. Proakis and Dimitris K. Manolakis, 4th edition, 2007, Prentice Hall, Upper Saddle River, NJ.

 Digital Signal Processing by Sanjit Mitra, 4th edition, 2011, McGraw-Hill, New York, NY.

Instructor bio

Prof. C.S. Ramalingam obtained his BE (ECE) from the University of Madras, an M.Tech degree from IIT Kharagpur, and a Ph.D in Electrical Engineering from the Univ. of Rhode Island, Kingston, USA. He was a Member of Technical Staff at the DSPS R&D Center of Texas Instruments (Dallas, TX) from 1995—2001. Since 2001 he is with the Department of Electrical Engineering at IIT Madras, where he is currently Associate Professor. His areas of interest are Signal Processing with applications to Speech Analysis, Synthesis, and Coding.

Course certificate

The course is free to enroll and learn from. But if you want a certificate, you have to register and write the proctored exam conducted by us in person at any of the designated exam centres.
The exam is optional for a fee of Rs 1000/- (Rupees one thousand only).
Date and Time of Exams: 
29 April 2023 Morning session 9am to 12 noon; Afternoon Session 2pm to 5pm.
Registration url: Announcements will be made when the registration form is open for registrations.
The online registration form has to be filled and the certification exam fee needs to be paid. More details will be made available when the exam registration form is published. If there are any changes, it will be mentioned then.
Please check the form for more details on the cities where the exams will be held, the conditions you agree to when you fill the form etc.


Average assignment score = 25% of average of best 8 assignments out of the total 12 assignments given in the course.
Exam score = 75% of the proctored certification exam score out of 100

Final score = Average assignment score + Exam score

YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75. If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.

Certificate will have your name, photograph and the score in the final exam with the breakup.It will have the logos of NPTEL and IIT Madras .It will be e-verifiable at nptel.ac.in/noc.

Only the e-certificate will be made available. Hard copies will not be dispatched.

Once again, thanks for your interest in our online courses and certification. Happy learning.

- NPTEL team

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