B.TechSemester 52021-22Digital Signal ProcessingKEC-503

Digital Signal Processing (KEC-503) - AKTU Question Paper 2021-22

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 2021-22. 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:2021-22

University:AKTU / UPTU

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Questions Asked in 2021-22

Digital Signal Processing (KEC-503) — complete question paper

Section AAttempt all q u e s t i o n s i n b r i e f . 2 x 10 = 20

a
Define the Recursive and Non-Recursive systems
b
Enlist the Condition for Linear Phase FIR digital filter with 5 Number of samples
c
Differentiate Butterworth Low Pass Filter with Chebyshev LPF i n terms of Filter Order
d
Evaluate the value of C 3(x), Chebyshev Polynomial
e
Demonstrate the term Gibb’s Phenomenon with schematic diagram
f
Explain the terms Truncation E rror & Round off Error with suitable examples
g
Evaluate the DFT for the sequence [1, 2, 7, 3]
h
Find out the total no of Complex additions and Complex multipl ications required for calculating 8-point Conventional DFT & by using bu tterfly structure DIT-FFT. i. Explain the term Decimati on with suitable example. j. Find the output of the sequence [1 2 3] after up sampling by a factor N=3

Section BAttempt any three o f t h e f o l l o w i n g : 10 x 3 = 30

a
Realize the given H(z) for using ladder structure
b
Design Digital Butterworth filter to satisfy the following con straints using bilinear transformation method, the sampling Interval is 2 seco nd: assume missing data if required: 0.52 ≤│H(ejw) │≤ 1 ,0 ≤ w ≤ π/2 │H(ejw) │≤ 0.1 ,3π/4 ≤ w ≤ π
c
Explain the concept of the Limit Cycle Oscillations & dead ban d effect with suitable example
d
Calculate the circular convol ution using graphical method for x(n) = [1,2,3,4] and h(n) = [4,3,2,1]
e
Summarize QMF & Explain analyt ical and synthesis filter bank w ith aliasing free filter bank

Section CAttempt any one p a r t o f t h e f o l l o w i n g : 10 x 1 = 10

a
Describe the linear phase FIR systems, &For h (n) = [1/2, 1 /3, 1/5, 1/3, 1/2] Realize H(z) of the Linear Phase FIR system for the given impulse response
b
Find out the direct form-I & direct form-II realization of a discrete-time system represented by the transfer function
a
Design Chebyshev Digital LPF filter to satisfy the followin g constraints using Impulse Invariant method. 0.9 ≤│H(ejw) │≤ 1 ,0 ≤ w ≤ 0.25π │H(ejw) │≤ 0.24 ,0.5π ≤ w ≤ π
b
Design Chebyshev Digital LPF filter to satisfy the followin g constraints using Bilinear Transformation method, assume that the sampling time is one second. 0.707 ≤│H(ejw) │≤ 1 ,0 ≤ w ≤ 0.2π │H(ejw) │≤ 0.1,0.5π ≤ w ≤ π
a
A low Pass filter is to be designed with the following specifications: Using Rectangular window function, Find the Filter coefficients & Frequency spectrum of the designed filter. Design a Filter with Using Hamming window with M= 7
a
Using DIF FFT find X (k), for x (n) = 2n+1, for N=8
b
Derive &solve the DIT FFT a lgorithm for 8 numbers of samples
a
Explain the block diagramma t i c p r e s e n t a t i o n o f D S P p r o c e s s or, with its architecture, addressing formats and its commercial usages
b
Write a short note on LMS Algorithm

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.