Digital Signal Processing (BEC503) - AKTU Question Paper 2024-25
B.Tech · Semester 5 · Free PDF Download
This is the official AKTU Digital Signal Processing Previous Year Question Paper for B.Tech Semester 5, academic session 2024-25. Published by Dr. A.P.J. Abdul Kalam Technical University (AKTU/UPTU), Lucknow. Free PDF download — no login required.
Course:B.Tech
Semester:Semester 5
Session:2024-25
University:AKTU / UPTU
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Questions Asked in 2024-25
Digital Signal Processing (BEC503) — complete question paper · 70 marks · 3 Hours
Section AAttempt all questions in brief. 2 x 07 = 14
- aWhat are recursive and non-recursive systems?
- bExplain the difference between canonic and non-canonic structures
- cList the characteristics of Butterworth filters
- dWhat is an Infinite Impulse Response (IIR) filter?
- eExplain the purpose of windowing in FIR filter design
- fExplain the difference between linear and circular convolution
- gDefine decimation in MDSP
Section BAttempt any three of the following: 07 x 3 = 21
- aExplain the basic building blocks of digital signal processing
- bDiscuss the impulse invariant method of IIR filter designing and its properties
- cDesign an FIR filter to meet the following specification : Pass band edge = 2 kHz Stop band edge = 5 kHz Stop band attenuation = 42 dB Samplin
- gfrequency = 20 kHz Use Hanning window
- dCompute the circular convolution of two discrete time sequences x1 (n) = {1, 2, 1, 2} and x2 (n) = {3, 2, 1, 4}
- eExplain the principle behind quad rature mirror filters (QMF) an d their use in MDSP. Describe the advantages of MDSP in sub-band coding
Section CAttempt any one part of the following: 07 x 1 = 07
- aObtain the parallel form realization for the system function given below
- bExplain the direct form realization of FIR systems
- aWhat is frequency warping effect? How this problem is overcome in bilinear transform method of IIR filter design ?
- bDesign a Butterworth low pass analog filter for the following specification : i. Pass band gain required : 0.9 ii. Frequency up to which pass band gain must remain more or le ss steady: 100 rad/sec. iii. Gain in attenuation band : 0.4 iv. Frequency from which the attenuation must start : 200 rad/sec
- aWhat is Gibb’s phenomenon? Describe the concept of windowing in FIR filter design
- bDefine coefficient quantization error and quantization noise in digital filters. Explain the effects of truncation and rounding on quantization noise
- aWrite a short note on the following : i. Butterfly computation ii. Bit reversal
- bList the key properties of the DFT and provide brief explanations of each
- aExplain the significance of Mu ltirate digital signal processing i n m o d e r n communication systems
- bDescribe the differences between decimation and interpolation in MDSP
Question text is extracted from the official AKTU question paper PDF above. Hindi translations are omitted — every question is printed in English in the original paper. Last verified: 2026-08-23.
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