Questions
1
What is the range of values called as to which the amplitudes of the output during a limit cycle ae confined to?
Answer:Dead band
2
Zero input limit cycles occur from non-zero initial conditions with the input x(n)=0.
Answer:True
3
Which of the following is true when the response of the single pole filter is in the limit cycle?
Answer:Actual non-linear system acts as an equivalent linear system
4
What is the dead band of a single pole filter with a pole at 1/2 and represented by 4 bits?
Answer:(-1/16,1/16)
5
The limit cycle mode with zero input, which occurs as a result of rounding the multiplications, corresponds to an equivalent second order system with poles at z=±1.
Answer:True
6
What is the necessary and sufficient condition for a second order filter that no zero-input overflow limit cycles occur?
Answer:|a1|+|a2|<1
7
An effective remedy for curing the problem of overflow oscillations is to modify the adder characteristic.
Answer:True
8
What is the dead band of a single pole filter with a pole at 3/4 and represented by 4 bits?
Answer:(-1/8,1/8)
10
The following diagram represents the unit sample response of which of the following filters?
Answer:Ideal low pass filter at ω=π/4
