Question 1
Marks : +2 | -2
Pass Ratio : 100%
What is the condition of M, if the structure according to the direct form is as follows?
Explanation: When the FIR system has linear phase, the unit sample response of the system satisfies either the symmetry or asymmetry condition, h(n)=±h(M-1-n)
Question 2
Marks : +2 | -2
Pass Ratio : 100%
The desired frequency response is specified at a set of equally spaced frequencies defined by the equation?
Explanation: To derive the frequency sampling structure, we specify the desired frequency response at a set of equally spaced frequencies, namely ωk=\\(\\frac{2\\pi}{M}\\)(k+α), k=0,1…(M-1)/2 for M odd
Question 5
Marks : +2 | -2
Pass Ratio : 100%
If we consider a sequence of FIR filer with system function Hm(z)=Am(z), then what is the definition of the polynomial Am(z)?
Explanation: Consider a sequence of FIR filer with system function Hm(z)=Am(z), m=0,1,2…M-1
Question 7
Marks : +2 | -2
Pass Ratio : 100%
What is the general system function of an FIR system?
Explanation: We know that the difference equation of an FIR system is given by y(n)=\\(\\sum_{k=0}^{M-1}b_k x(n-k)\\).
Question 8
Marks : +2 | -2
Pass Ratio : 100%
What is the system function of all-zero filter or comb filter?
Explanation: The system function H(z) which is characterized by the set of frequency samples is obtained as