Digital Signal Processing Questions and Answers, Set 9

Digital Signal Processing Questions and Answers

Q1. 

Which of the following uses quadrature mirror filters?

Answer : 

Sub-band coding & Trans-multiplexer

Q2. 

Which of the following has to be performed in sampling rate conversion by a rational factor?

Answer : 

Interpolation

Q3. 

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

Answer : 

All poles and zeros are inside the unit circle

Q4. 

If the phase ϴ(ω) of the system is linear, then the group delay of the system?

Answer : 

Constant

Q5. 

If a power signal has its power density spectrum concentrated about zero frequency, the signal is known as ___

Answer : 

Low-frequency signal

Q6. 

Which of the following electromagnetic signals has a frequency range of 30kHz-3MHz?

Answer : 

Radio broadcast

Q7. 

Which of the following is the disadvantage of the Hanning window over the rectangular window?

Answer : 

More width of the main lobe

Q8. 

The effect of round-off errors due to the multiplications performed in the DFT with fixed-point arithmetic is known as Quantization error.

Answer : 

True

Q9. 

The 4N quantization errors are correlated with the sequence {x(n)}.

Answer : 

False

Q10. The 

FFT algorithm is designed to perform complex operations.

Answer : 

True

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