Question 2
Marks : +2 | -2
Pass Ratio : 50%
Which of the following is the difference equation of the FIR filter of length M, input x(n) and output y(n)?
Explanation: An FIR filter of length M with input x(n) and output y(n) is described by the difference equation
Question 8
Marks : +2 | -2
Pass Ratio : 50%
What is the number of filter coefficients that specify the frequency response for h(n) symmetric?
Explanation: We know that, for a symmetric h(n), the number of filter coefficients that specify the frequency response is (M+1)/2 when M is odd and M/2 when M is even.
Question 10
Marks : +2 | -2
Pass Ratio : 50%
What is the number of filter coefficients that specify the frequency response for h(n) anti-symmetric?
Explanation: We know that, for a anti-symmetric h(n) h(M-1/2)=0 and thus the number of filter coefficients that specify the frequency response is (M-1)/2 when M is odd and M/2 when M is even.