B.TechSemester 52025-26Digital Signal ProcessingBEC503
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Digital Signal Processing (BEC503) - AKTU Question Paper 2025-26

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 2025-26. 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:2025-26
University:AKTU / UPTU

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Questions Asked in 2025-26

Digital Signal Processing (BEC503) — complete question paper · 70 marks · 3 Hours

Section AAttempt all q u e s t i o n s i n b r i e f . 2 x 0 7 = 1 4
  • a
    Write down the real time applic ations of digital signal processing
  • b
    Why realization process is used in digital system
  • c
    Differentiate between filter and frequency transformation. 2 K 1
  • d
    What are the advantages and disadvantages of IIM
  • e
    What is Gibbs phenomenon with diagram?
  • f
    What is circular convolution?
  • g
    What is the need of multirate signal processing?
Section BAttempt any three o f t h e f o l l o w i n g : 0 7 x 3 = 2 1
  • a
    Explain the linear phase property of FIR filter. Also determ ine linear- phase and cascade realizations of the system function given below
  • b
    Convert a low pass Butterwort h filter into a BPF with upper and lower cut off frequencies are 0.6π and 0.4π respectively. The LPF has 3 dB bandwidth =0.2 π
  • c
    Explain the characteristics of kaiser window. Briefly explai n the design steps for designing of finite impulse response filter using kaiser window with suitable diagram
  • d
    Derive the equation for the DI T algorithm for N = 8 and draw the signal flow graph
  • e
    Consider time domain sequence x(n)= {1,3,5,7,9}. Determine t he up sampled version of the signal fo r sampling rate multiplication factor a)
Section CAttempt any one p a r t o f t h e f o l l o w i n g : 0 7 x 1 = 0 7
  • a
    Obtain the direct form-I , direct form-II, cascade form real ization structures for the following system
  • b
    Determine the coefficients of a continued-fraction expansion of H(z);
    Also draw ladder realization structure of a given IIR system
  • a
    Design a digital Chebyshev filter to satisfy the constraints using bilinear transformation with T=1 sec
  • b
    Find the system function H(z) of the digital Butterworth fil ter that meets the following specification: Use Bilinear transformation method . Assume T=1 sec
  • a
    1 dB ripple in pass band 0≤│ω│≥0.3π
  • b
    At least 40 dB attenuation in stop band 0.8 π ≤│ω│≥ π
  • a
    Explain Butterworth and Chebyshev IIR filter design
  • b
    Design a linear phase low pass digital filter if the desired frequency response is giving by Using the bartlett window and choosing a suitable length of fil ter length M, find the impulse response and frequency response of designed filter. Determine the system function and differen ce equation. Also draw the line ar phase structure of designed filter
  • a
    Compute IDFT of the sequence X(k)= {7, -0.707-j0.707, -j, 0. 707- j0.707, 1, 0.707+j0.707, j, -0.707+j0.707}, using FFT Algorithm
  • b
    An input sequence x(n) = {2, 1, 0, 1, 2} is applied to a DSP system having an impulse sequence h(n) = {5, 3, 2, 1}. Determine the o utput sequence by linear convolution a nd verify the same through circ ular convolution
  • a
    Explain the concept of Quadr ature Mirror Filters (QMF) used in multirate digital signal processing
  • b
    Briefly explain the phenomenon of Subband coding of speech s ignals with neat diagram. Also explain the application of Subband coding of speech signal in multirate signal processing

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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