Questions
1
If yk(n) is the convolution of the finite duration input sequence x(n) of length N, then what is the impulse response of the filter?
Answer:WN-kn u(n)
2
What is the expression to compute yk(n) recursively?
Answer:yk(n)=WN-kyk(n-1)+x(n)
3
If the contour is a circle of radius r and the zk are N equally spaced points, then what is the value of zk?
Answer:rej2πkn/N
4
How many multiplications are required to calculate X(k) by chirp-z transform if x(n) is of length N?
Answer:N+1
5
If the contour on which the z-transform is evaluated is as shown below, then which of the given condition is true?
Answer:R0>1
6
How many complex multiplications are need to be performed to calculate chirp z-transform?(M=N+L-1)
Answer:Mlog2M
7
The effect of round off errors due to the multiplications performed in the DFT with fixed point arithmetic is known as Quantization error.
Answer:True
8
What is the model that has been adopt for characterizing round of errors in multiplication?
Answer:Additive white noise model
9
How many quantization errors are present in one complex valued multiplication?
Answer:Four
10
What is the total number of quantization errors in the computation of single point DFT of a sequence of length N?
Answer:4N
