Digital Signal Processing Questions and Answers, Set 19

Digital Signal Processing Questions and Answers

Q1. 

How much phase shift does a Hilbert transformer impart on the input?

Answer :  

90°

Q2. 

Which of the following is true regarding the frequency response of the Hilbert transform?

Answer :  

Purely imaginary

Q3. 

In this section, we confine our attention to FIR designs in which h(n)=-h(M-1-n).

Answer :  

True

Q4. 

In this section, we confine our attention to FIR designs in which h(n)=h(M-1-n).

Answer :  

False

Q5. The 

Remez exchange algorithm is an iterative algorithm used in error approximation.

Answer :  

True

Q6. 

Which of the following filter designs is used in the formulation of the design of an optimum equiripple linear phase FIR filter?

Answer :  

Chebyshev approximation

Q7. 

The error function E(ω) does not alternate in sign between two successive extremal frequencies.

Answer :  

False

Q8. 

In the Parks-McClellan program, an array of maximum size 10 that specifies the desired frequency response in each band is denoted by?

Answer :  

FX

Q9. 

In a practical implementation of the frequency sampling realization, quantization effects preclude a perfect cancellation of the poles and zeros.

Answer :  

True

Q10. 

How does the frequency of oscillations in the pass band of a low-pass filter vary with the value of M?

Answer :  

Increase with increase in M

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