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UNIT-1

1. 
   

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SAQ

1. State and prove complex conjugate property. (feb/march 2023 main)

2. Compare 64-point DFT and FFT with respect to numbers of computations.(feb/march 2023 main)

3. Compute circular convolution of the following two sequences x1(n)={0, 1, 0, 1} and x2(n)={1, 2, 1, 2}. (march/april 2022 main)

4. State any two properties of DFT.(march/april 2022 main)

5. What is bit reversal in FFT (july 2021 main)

6. Explain the time shift property of DFT? (july 2021 main).

7. List the properties of Twiddle Factor.(october 2020 backlog)

8. Find the DFT of x(n)={1 2 3 4 5}.(october 2020 backlog)

9. Compare and contrast DFT and DTFT.(Main & Backlog Dec 2019)

10. State symmetry and conjugate properties of DFT. (Main & Backlog Dec 2019)

11. How many multiplications and additions are involved in direct computation of DFT and FFT? Compare. (Main & Backlog Dec 2019)

12. Distinguish between DIT-FFT and DIF-FFT.(Backlog Dec 2017)

13. State any three properties of DFT.(Backlog Dec 2017)

14. Find the DFT of x(n)={1 2 2 1} using DIT-FFT algorithm.(Backlog Dec 2017)

15. Compare Linear convolution and circular convolution. (Main Dec 2017)

16. What is meant by in place computation. (Main Dec 2017)

17. List any 3 properties of DFT. (Main May 2017)

18. What is decimation in time algorithm. (Main May 2017)

19. What is meant by in place computation. (Old Main May 2017)

20. Explain Overlap Add method of convolution. (New Main May 2017)

21. List out the five properties of DTFT. (New Main May 2017)

UNIT-2 and UNIT-3

SAQ

1. Define Phase delay and group delay. (Main Feb/Mar 2023)

2. Distinguish between FIR and IIR filters.(Main Feb/Mar 2023)

3. List out the properties of Butterworth Filter. (Main Feb/Mar 2023)

4. State any 2 properties of Chebyshev Filters. (Main march/april 2022)

5. Illustrate warping effect. (Main march/april 2022)

6. List the advantages of FIR filter. (Main march/april 2022)

7. What are the properties of chebychev filters? (Main july 2021)

8. Differentiate between impulse invariant and bilinear transformation techniques of designing digital filter. (Main july 2021)

9. Compare hamming and blackman windows? (Main july 2021)

10. What are the key features of FIR filters. (Main july 2021)

11. Explain warping effect. (Backlog oct 2020)

12. Give the equations specifying rectangular and bartlett windows. (Backlog oct 2020)

13. What are the conditions for a FIR system to have linear phase. (Backlog oct 2020)

14. Determine the H(z) for the given analog filter transfer function H(s)=2/(s+1)(s+2) using impulse invariance method. (Backlog oct 2020)

15. What is warping effect and how it can be eliminated. (Main & Bac Dec 2019)

16. Compare IIR and FIR filters in terms of Designing characteristics. (Main & Bac Dec 2019)

17. Compare various window functions based on width of the main lobe and where first side lobe exists. (Main & Bac Dec 2019)

18. Write the characteristics features of rectangular window. (New Suupl Dec 2017)

19. Give the expression for frequency response of (A) Hanning Window (B) Hamming Window. (New Suupl Dec 2017)

20. In the design of FIR digital filters, how is kaiser window different from other windows? (New Main may 2017)

21. Define Finite word length effects.(New Main may 2017)

22. Compare FIR and IIR digital filters.(New Main may 2017)

23. Derive the necessary condition for a filter to exhibit linear phase. (New Main may 2017)

UNIT-4

SAQ

1. Obtain the unsampled version of the signal given by x(n)={2,4,-6,5,4,2,4,7,9} for the sampling rate conversion of I=2. (Main New Feb/mar 2023)

2. Construct signal flow graph for y(n)=0.9x(n)+1.4(n-1). (Main Mar/Apr 2022)

3. List the application of multirate signal processing. (Main Mar/Apr 2022)

4. Discuss Multistage implementation of Decimation by a factor D. (Main Mar/Apr 2022)

5. What is interpolation? When it is performed. (Main july 2021)

6. Write about sub band coding of speech signals? (Main july 2021)

7. What is the need for an anti-imaging filter after upsampling a signal. (Back 2020)

8. What is sampling rate conversion and mention its applications. (Main & Back Dec 2019)

9. Write a short note on multistage implementation of sampling rate conversion.(Main & Back Dec 2019)

10. Give the applications of Multirate signal processing. (New Main May 2017)

11. How do you interface 2 digital systems operating at different sampling rates. (New Main May 2017)

UNIT-5

SAQ

1. List the addressing modes of TMS320C67XX Processor. (Main New Feb/mar 2023)

2. Explain direct addressing mode in DSP processor. (Main Mar/Apr 2022)

3. Explain the use of Guard Bits. (Main Mar/Apr 2022)

4. Differentiate between RISC and CISC CPU? (Main July 2021)

5. What is the MAC operation in DSP processor. (Main July 2021)

6. List any 3 arithmetic instructions of TMS320C54XX Processor. (Back Oct 2020)

7. What are the various types of ON-CHIP memory in TMS230C54XX family of processors. (Back Oct 2020)

8. What are the advantages of Digital signal processing. (Back Oct 2020)

9. Compare and contrast general purpose microprocessors with Digital signal processors. (Main & back 2019)

10. What are Guard bits in DSP processors. (Main & back 2019)

11. Differentiate between von Neumann and Harvard Architecture. (New Main May 2017)

12. What are the addressing modes available in TMS320C5X Processors. (New Main May 2017)

UNIT-1

LAQ

1. Determine circular convolution of the following sequences using concentric circles method. x1(n)={-1,2,-2,-1}, x2(n)={1,-2,-1,-2}.

2. Find the linear convolution of the sequences x(n) and h(n) using DFT-IDFT method. x(n)={1,0,2}; h(n)={1,1}. (New Main Feb/Mar 2023)

1.  

1. Compute 8-point DFT of the sequence x(n)={0 1 2 3 4 5 6 7} using radix-2 DIT-FFT algorithm.

2. Compare DIT-FFT and DIF-FFT algorithms. (New Main Feb/Mar 2023)

2. Compute 8-point DFT of x(n) by Radix-2 DIF-FFT Method for an 8-point sequence given x(n)={2 1 0 -1 3 1 2 0}, also sketch the magnitude and phase spectrum. (Main Mar/Apr 2022)

3. Compute the 8-point DFT of the sequence x(n)=(2 -1 1 0 3 0 3 0 1 1} using DIT-FFT algorithm. (Main july 2021)

4.  

1. Compare linear convolution and circular convolution.

2. Determine the response of an LTI system whose impulse response h(n) and response x(n) are given by using circular convolution method. H(n)={1 4 1 -2 1}, x(n)={1 3 5 -1 -2}.

5.  

1. Compute linear/circular convolution of the following g sequences using DFT-IDFT method. Sequences: x(n)={1 2 0 1}, (h/n)={1 1 1 1}.

2. Compute 8-point DFT of the discrete time signal x(n)={1 2 3 2 1 2 3 2} using DIF-FFT algorithm.

6.  

1. Determine 8-pnt DFT of the sequence x(n)={1 2 3 2 1 2 3 2} using DIF method.

2. Find the convolution of h(n)={1 2 3} and x(n)={1 2 3 4 5 6 7 8 9} using overlap save method.

UNIT-2

LAQ

1.  

1. Design a linear phase FIR high pass filter using Hamming window, with a cutoff frequency of Wc=0.7pi rad/sample and N=7. Realize the filter using suitable structure.

2. Describe various windows and compare them with respect to the main-lobe width, minimum side-lobe attenuation.

2.  

1. Designa a buttorworth digital IIR LPF using Bilinear Transformation by taking T=0.1s, to satisfy the following specifications.

0.6|H(e||)|1.0 for 0 0.35

         |H(e||)|0.1 for 0.7

Realize the filter using Direct Form-2 structure.

2. Describe the relation between analog and digital filter poles in impulse invariant transformation.