Question 11 : In Overlap save method of long sequence filtering, how many zeros are appended to the impulse response of the FIR filter?
1. L+M
2. L
3. L+1
4. L-1
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Question 12 : In Overlap save method of long sequence filtering, what is the length of the input sequence block?
1. L+M+1
2. L+M
3. L+M-1
4. None of the mentioned
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Question 13 : How many number of bits are required to compute the DFT of a 1024 point sequence with a SNR of 30db?
1. 15
2. 10
3. 5
4. 20
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Question 14 : In Overlap add method, what is the length of the input data block?
1. L-1
2. L
3. L+1
4. None of the mentioned
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Question 15 : By means of the DFT and IDFT, determine the response of the FIR filter with impulse response h(n)={1,2,3} to the input sequence x(n)={1,2,2,1}?
1. {1,4,11,9,8,3}
2. {1,4,9,11,8,3}
3. {1,4,9,11,3,8}
4. {1,4,9,3,8,11}
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Question 16 : What is the variance of the output DFT coefficients |X(k)|?
1. 1/N
2. 1/2N
3. 1/3N
4. 1/4N
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Question 17 : Overlap add and Overlap save are the two methods for linear FIR filtering a long sequence on a block-by-block basis using DFT.
1. True
2. False
3.
4.
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Question 18 : What is the model that has been adopt for characterizing round of errors in multiplication?
1. Multiplicative white noise model
2. Subtractive white noise model
3. Additive white noise model
4. None of the mentioned
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Question 19 : How many number of butterflies are required per output point in FFT algorithm?
1. N
2. N+1
3. 2N
4. N-1
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Question 20 : How many quantization errors are present in one complex valued multiplication?
1. One
2. Two
3. Three
4. Four
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