## Sampling Rate Conversion MCQ’s

This set of Digital Signal Processing Multiple Choice Questions & Answers (MCQs) focuses on “Sampling Rate Conversion”. 1. The Nth root of unity WN is given as _____________a) ej2πNb) e-j2πNc) e-j2π/Nd) ej2π/N 2. Which of the following is true?a) W∗N=1NWN−1b) WN−1=1NWN∗c) WN−1=WN∗d) None of the mentioned 3. What is the DFT of the four point sequence x(n)={0,1,2,3}?a) {6,-2+2j-2,-2-2j}b) {6,-2-2j,2,-2+2j}c) {6,-2-2j,-2,-2+2j}d) […]

## Factor I Interpolation MCQ’s

This set of Digital Signal Processing Multiple Choice Questions & Answers (MCQs) focuses on “Factor I Interpolation”. 1. Which of the following is true about the interpolated signal whose spectrum is V(ωy)?a) (I-1)-fold non-periodicb) (I-1)-fold periodic repetitionc) I-fold non periodicd) I-fold periodic repetition 2. What is the relationship between ωx and ωy?a) ωy= ωx.Ib) ωy= ωx/Ic) […]

## Frequency Transformations MCQ’s

This set of Digital Signal Processing Multiple Choice Questions & Answers (MCQs) focuses on “Frequency Transformations”. 1. Which of the following is the backward design equation for a low pass-to-low pass transformation?a) $$\Omega_S=\frac{\Omega_S}{\Omega_u}$$b) $$\Omega_S=\frac{\Omega_u}{\Omega’_S}$$c) $$\Omega’_S=\frac{\Omega_S}{\Omega_u}$$d) $$\Omega_S=\frac{\Omega’_S}{\Omega_u}$$ 2. If A=$$\frac{Ω_1 (Ω_u-Ω_l)}{-Ω_1^2+Ω_u Ω_l}$$ and B=$$\frac{Ω_2 (Ω_u-Ω_l)}{Ω_2^2-Ω_u Ω_l}$$, then which of the following is the backward design equation […]

## Butterworth Filters MCQ’s

This set of Digital Signal Processing Multiple Choice Questions & Answers (MCQs) focuses on “Butterworth Filters”. 1. What is the transfer function of magnitude squared frequency response of the normalized low pass Butterworth filter?a) $$\frac{1}{1+(s/j)^{2N}}$$b) $$1+(\frac{s}{j})^{-2N}$$c) $$1+(\frac{s}{j})^{2N}$$d) $$\frac{1}{1+(s/j)^{-2N}}$$ 2. What is the general formula that represent the phase of the poles of transfer function of […]

## Analog Filters Classification MCQ’s

This set of Digital Signal Processing Multiple Choice Questions & Answers (MCQs) focuses on “Analog Filters Classification”. 1. What is the stop band gain of a low pass filter with δS as the pass band attenuation?a) -20log(1- δS)b) -20log(δS)c) 20log(δS)d) 20log(1- δS) 2. What is the region after the stop band frequency in the magnitude frequency […]

## IIR Frequency Domain Filter Analysis MCQ’s

This set of Digital Signal Processing Multiple Choice Questions & Answers (MCQs) focuses on “IIR Frequency Domain Filter Analysis”. 1. If the error in delay is defined as Tg(ωk) – Tg(ω0) – Td(ωkk), then what is Tg(ω0)?a) Filter delay at nominal frequency in stop bandb) Filter delay at nominal frequency in transition bandc) Filter delay […]

## FIR Least Squares Filters MCQ’s

This set of Digital Signal Processing Multiple Choice Questions & Answers (MCQs) focuses on “FIR Least Squares Filters”. 1. What should be the desired response for an optimum wiener filter to be an approximate inverse filter?a) u(n)b) δ(n)c) u(-n)d) none of the mentioned 2. What should be the length of the truncated filter?a) Mb) M-1c) […]