EE3014 Week 4 LAMS questions and answers PDF

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EE3014 Week 4 LAMSLearning Checkpoint 11.The DTFT magnitude spectrum of a real signal is _____________ and ____________. continuous, symmetric about the y-axis2.The conjugate symmetry of will have the samemagnitude and anti-symmetric phase. True3.The DTFT of is because DTFT has the differentiation p...

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EE3014 Week 4 LAMS

Learning Checkpoint 1

1. The DTFT magnitude spectrum of a real signal is _____________ and ____________. continuous, symmetric about the y-axis

2. The conjugate symmetry of magnitude True

will have the same and anti-symmetric phase

.

3. The DTFT of is differentiation property. False. The DTFT has linearity property.

because DTFT has the

4. Consider as the DTFT of 3 samples, the DTFT will be

. If we delay the time-domain discrete signal by

5. Which operation being performed to the original signal that can change the DTFT output from to Time-reversal

?

6. Consider an audio signal from an MP3 player

. The DTFT of the audio signal is given

by . What is the DTFT if the frequency of the audio signal is shifted due to Doppler frequency ?

7. The DTFT of the convolution between two time-domain discrete signals yields the multiplication of DTFTs of two signals. True

8. Which of the following signals will have the following frequency spectrum after DTFT is performed?

Impulse function

9. Find the DTFT of the following signal .

Learning Checkpoint 2

1. The frequency response of a system refers to the DTFT of the system’s impulse response. True

2. What does the frequency response of a system comprise of? Magnitude and phase responses

3. What is the DTFT of the following CCDE?

4. What is the frequency response of the following?

5. What is the frequency response of the following LTI system?

6. What is the suitable expression for a system which as the following frequency response?

7. Consider two LTI systems with frequency responses frequency response be

and

. If a system with

is the parallel combination of the two systems, what would

?

8. Consider two LTI systems with frequency responses frequency response be

?

and

. If a system with

is the cascade combination of the two systems, what would...