ANNA UNIVERSITY CHENNAI

B.E DEGREE PRACTICAL EXAMINATIONS – APR/MAY - 2021

DEPARTMENT OF ELECTRONICS AND COMMUNICATTION
ENGINEERING

College Code /Name : 8148/University College of Engineering Ariyalur

Department : Electronics and Communication Engineering
Subject Code /Name : EC8562 - DIGITAL SIGNAL PROCESSING LABORATORY

Date of Examination : 09.08.2021 (FN)

EC8562 - DIGITAL SIGNAL PROCESSING LABORATORY

LIST OF EXPERIMENTS:

MATLAB / EQUIVALENT SOFTWARE PACKAGE

1.Generation of elementary Discrete-Time sequences
2.Linear and Circular convolutions
3.Auto correlation and Cross Correlation
4.Frequency Analysis using DFT
5.Design of FIR filters (LPF/HPF/BPF/BSF) and demonstrates the filtering operation
6.Design of Butterworth and Chebyshev IIR filters (LPF/HPF/BPF/BSF) and demonstrate
the filtering operations.

DSP PROCESSOR BASED IMPLEMENTATION

1. Study of architecture of Digital Signal Processor.
2. Perform MAC operation using various addressing modes.
3. Generation of various signals and random noise.
4. Design and demonstration of FIR Filter for Low pass, High pass, Band pass
and Band Stop Filtering.
5. Design and demonstration of Butter worth and Chebyshev IIR Filters for Low
pass, High Pass, Band pass and Band stop filtering
6. Implement an Up-sampling and Down-sampling operation in DSP Processor

INTERNAL EXAMINER EXTERNAL EXAMINER

 ANNA UNIVERSITY CHENNAI
B.E DEGREE PRACTICAL EXAMINATIONS – APR/MAY - 2021
DEPARTMENT OF ELECTRONICS AND COMMUNICATTION
ENGINEERING

College Code /Name : 8148/University College of Engineering Ariyalur

Department : Electronics and Communication Engineering
Subject Code /Name : EC8562 - DIGITAL SIGNAL PROCESSING LABORATORY
Date of Examination : 09.08.2021 (FN)

Name :

Reg. No:

Mark
Obtained
S.No Description Allocation
Mark

1 Aim & Identification 15

2 Apparatus required & Procedure 10

3 Circuit diagram & Tabulation 25

4 Observation 20

5 Result 10

6 MCQ Questions 15

7 Viva - Voce 10

Total 100
 INTERNAL EXAMINER EXTERNAL EXAMINER

ANNA UNIVERSITY CHENNAI

B.E DEGREE PRACTICAL EXAMINATIONS – APR/MAY - 2021
DEPARTMENT OF ELECTRONICS AND COMMUNICATTION
ENGINEERING

College Code /Name : 8148/University College of Engineering Ariyalur

Department : Electronics and Communication Engineering
Subject Code /Name : EC8562 - DIGITAL SIGNAL PROCESSING LABORATORY
Date of Examination : 05.08.2021 (FN)

BATCH SCHEDULE

No. of
Date Time Reg. No
Students

814818106002-814818106010
814818106012-814818106019
9.30 am -
09.08.2021 814818106022-814818106029 28
12.30pm 814818106032-814818106033
814818106035,814818106037

INTERNAL EXAMINER EXTERNAL EXAMINER

 ANNA UNIVERSITY CHENNAI
B.E DEGREE PRACTICAL EXAMINATIONS – APR/MAY - 2021
DEPARTMENT OF ELECTRONICS AND COMMUNICATTION
ENGINEERING

College Code /Name : 8148/University College of Engineering Ariyalur

Department : Electronics and Communication Engineering
Subject Code /Name : EC8562 - DIGITAL SIGNAL PROCESSING LABORATORY
Date of Examination : 05.08.2021 (FN)

Duration : 3 Hrs Maximum Mark : 100

List of Questions
1. (a) Generate standard discrete time sequences namely unit impulse, unit step, unit ramp signals
by running a suitable MATLAB program.

(b) Write and execute a MATLAB program to generate the frequency spectrum of these standard
signals.

2. Write and execute a MATLAB program to perform periodic convolution of 2 discrete time
sequences: x1(n) = [1,2,3,5,6,-7] and x2(n) = [4,5,6,7,8]. Also verify the results manually.

3. Write and execute a MATLAB program to perform convolution of the 2 discrete time sequences
along linear time axis: x1(n) = 2, 2<n <7 and x2(n) = 1, 1<n<8; Also verify the results manually.

4. Write and execute a MATLAB program to perform cross correlation of the sequences x(n) =
[1,1,2,2] and y(n) = [1,0,5,1]. Also verify the results manually.

5. By executing a suitable MATLAB program, determine the auto correlation of x(n) = [1,2,3,4].
Also verify the results manually.

6. Write and execute a suitable MATLAB program to compute 8 point DFT of the discrete time
sequence x(n) = [2,1,2,1,1,2,1,2]. Also plot the magnitude and phase spectrum.

7. Write and execute a MATLAB program to find the response of an LTI system for the input x(n)
= [1,2,3,4] and the impulse response h(n) = [1,2,2,1] by performing circular convolution of
 suitable length. Verify the system response through linear convolution.

8. Write and execute a MATLAB program to determine the impulse response of FIR lowpass filter
using rectangular window and hence plot the frequency response. Verify the response by
working out the design manually.

9. Write and execute a MATLAB program to determine the impulse response of FIR highpass filter
using Hamming window and hence plot the frequency response. Verify the response by working
out the design manually.

10. By executing a suitable MATLAB program, determine the impulse response of FIR bandpass
filter using Hanning window and hence plot the frequency response. Verify the response by
working out the design manually.

11. By executing a suitable MATLAB program, determine the impulse response of FIR bandstop
filter using Fourier series method and hence plot the frequency response. Verify the response by
working out the design manually.

12. Write and execute a MATLAB program to design a Butterworth digital IIR low pass filter using
Bilinear transformation to satisfy the following specifications:

T=0.1 sec ; 0.6 ≤ | H(ejw) | ≤ 1.0 ; for 0 ≤ ω ≤ .35 π

| H(ejw) | ≤ 0.1 ; for 0.7 π ≤ ω ≤ π

13. Write and execute a MATLAB program to design a Butterworth digital IIR high pass filter using
Bilinear transformation to satisfy the following specifications:

T=0.1 sec ; 0.6 ≤ | H(ejw) | ≤ 1.0 ; for 0.7 π ≤ ω ≤ π

| H(ejw) | ≤ 0.1 ; for 0 ≤ ω ≤ .35 π

14. Write and execute a MATLAB program to design a Butterworth digital IIR low pass filter using
Impulse invariant transformation to satisfy the following specifications:

T=1 sec ; 0.707 ≤ | H(ejw) | ≤ 1.0 ; for 0 ≤ ω ≤ .3 π

| H(ejw) | ≤ 0.2 ; for for 0.75 π ≤ ω ≤ π

15. Write and execute a MATLAB program to design a Chebyshev digital IIR low pass filter using
Impulse invariant transformation to satisfy the following specifications:
 T=1 sec ; 0.9 ≤ | H(ejw) | ≤ 1.0 ; for 0 ≤ ω ≤ .25 π

| H(ejw) | ≤ 0.24 ; for for 0.5 π ≤ ω ≤ π

16. Write and execute a MATLAB program to design a Chebyshev digital IIR low pass filter using
Bilinear transformation to satisfy the following specifications:

T=1 sec ; 0.8 ≤ | H(ejw) | ≤ 1.0 ; for 0 ≤ ω ≤ 0.2 π

| H(ejw) | ≤ 0.2 ; for for 0.32 π ≤ ω ≤ π

17. Generate sinusoidal and square waveforms using TMS3205416 DSP processor.

18. Implement the generation of triangular waveform and random noise using TMS3205416.

19. Perform up sampling (by a factor of 3) and down sampling (by a factor of 2) on a discrete time
signal using TMS3205416.

20. Design and implement a FIR low pass filter with a cut off frequency of 1 KHz with
TMS3205416. Plot the frequency response.

21. Design and implement an IIR Butterworth low pass filter with a cut off frequency of 1 KHz
using TMS3205416. Verify the frequency response.

22. Demonstrate the indirect, direct and immediate addressing modes of TMS3205416 using
programming examples.

INTERNAL EXAMINER EXTERNAL EXAMINER