Digital Signal Processing Questions and Answers, Set 10

Digital Signal Processing Questions and Answers

Q1. 

What are the values of z for which the value of X(z)=0?

Answer : 

Zeros

Q2. 

What is the set of all values of z for which X(z) attains a finite value?

Answer : 

Radius of convergence

Q3. 

An IIR system with system function H(z)=\(\frac{B(z)}{A(z)}\) is called a mixed phase if _____

Answer : 

Some, but not all of the zeros are outside the unit circle

Q4. 

A digital resonator is a special two-pole band-pass filter with a pair of complex conjugate poles located near the unit circle.

Answer : 

True

Q5. 

What are the main characteristics of an anti-aliasing filter?

Answer : 

All of the mentioned

Q6. 

What is the spectrum that is obtained when we plot |ck| as a function of frequency?

Answer : 

Magnitude voltage spectrum

Q7. 

The condition with fewer samples L, should be avoided.

Answer : 

True

Q8. 

What is the model that has been adopted for characterizing rounding errors in multiplication?

Answer : 

Additive white noise model

Q9. 

How is the variance of the quantization error related to the size of the DFT?

Answer : 

Proportional

Q10. 

The decimation-in-frequency FFT algorithm is used to compute H(k).

Answer : 

True

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