Questions
1
What is the output of the single stage lattice filter if x(n) is the input?
Answer:x(n)+Kx(n-1)
2
What is the output from the second stage lattice filter when two single stage lattice filers are cascaded with an input of x(n)?
Answer:x(n)+K1(1+K2)x(n-1)+K2x(n-2)
3
What is the value of the coefficient α2(1) in the case of FIR filter represented in direct form structure with m=2 in terms of K1 and K2?
Answer:K1(1+K2)
4
The constants K1 and K2 of the lattice structure are called as reflection coefficients.
Answer:True
5
If a three stage lattice filter with coefficients K1=1/4, K2=1/2 K3=1/3, then what are the FIR filter coefficients for the direct form structure?
Answer:(1,13/24,5/8,1/3)
6
What are the lattice coefficients corresponding to the FIR filter with system function H(z)= 1+(13/24)z-1+(5/8)z-2+(1/3)z-3?
Answer:(1/4,1/2,1/3)
7
If M and N are the orders of numerator and denominator of rational system function respectively, then how many multiplications are required in direct form-I realization of that IIR filter?
Answer:M+N+1
8
If M and N are the orders of numerator and denominator of rational system function respectively, then how many additions are required in direct form-I realization of that IIR filter?
Answer:M+N
9
If M and N are the orders of numerator and denominator of rational system function respectively, then how many memory locations are required in direct form-I realization of that IIR filter?
Answer:M+N+1
10
In direct form-I realization, all-pole system is placed before the all-zero system.
Answer:False
