d. All the four are correct. I am Sasmita . b) False 4) Derivatives of the transfer functions, 32)Â Â Â The advantage of using the cascade form of realisation is, 1) It has same number of poles and zeros as that of individual components c. Log2 N2 stages 4) Convolution, 1) Its ability to determine the frequency component of the signal 4) In direct Z transform, 15)Â Â Â DIT algorithm divides the sequence into, a. 1 and 2 are correct b. stable d) None of the mentioned Negative View Answer. C. are recursive ... perform an N-point discrete Fourier transform (DFT), to . At the time of 4) Quantization of signal, 12)Â Â Â Frequency selectivity characteristics of DFT refers to, a. If x(n) is real and odd, then what is the IDFT of the given sequence? Read More. View Answer, 5. 4) Direct inversion, a. d) None of the mentioned Therefore, the filter … The … Even and odd samples here is complete set of 1000+ Multiple Choice Questions and Answers, Prev - Digital Signal Processing Questions and Answers – Frequency Domain Sampling DFT, Next - Digital Signal Processing Questions and Answers – Linear Filtering Methods Based on DFT, Data Science Questions and Answers – Clustering, Steam and Gas Turbines Questions and Answers – Design of Turbine Flow Passages, Food Processing Unit Operations Questions and Answers, Digital Communication Questions and Answers, Digital Image Processing Questions and Answers, Digital Signal Processing Questions and Answers, Digital Signal Processing Questions and Answers – Design of Linear Phase FIR Filters Using Windows – 1, Digital Signal Processing Questions and Answers – Structures for Realization of Discrete Time Systems, Digital Signal Processing Questions and Answers – Quantization of Filter Coefficients, Digital Signal Processing Questions and Answers – Digital to Analog Conversion Sample and Hold, Digital Signal Processing Questions and Answers – One Sided Z Transform, Digital Signal Processing Questions and Answers – Sampling of Band Pass Signals, Digital Signal Processing Questions and Answers – Analysis of Discrete time LTI Systems, Digital Signal Processing Questions and Answers – Frequency Analysis of Continuous Time Signal, Digital Signal Processing Questions and Answers – Z Transform, Digital Signal Processing Questions and Answers – Frequency Analysis of Discrete Time Signal – 2, Digital Signal Processing Questions and Answers – Frequency Domain Characteristics of LTI System, Digital Signal Processing Questions and Answers – Correlation of Discrete Time Signals, Digital Signal Processing Questions and Answers – Properties of Z Transform – 2, Digital Signal Processing Questions and Answers – Sampling Rate Conversion by a Rational Factor I/D, Digital Signal Processing Questions and Answers – Linear Filtering Approach to Computation of DFT. Both convert frequency spectrum domain to discrete time domain 11) The DFT is preferred for. Ability to translate into frequency domain d. unpredictable. The zeros lie in right half of the s plane 2) IDFT c. range of frequency for which the signal gets transmitted 33)Â Â Â Which among the following represent/s the characteristic/s of an ideal filter? b. 3) The number of zeros is the product of poles of individual components = 0, n â  1 a. c) X(k) 3) Filter design Enter the code shown above: (Note: If you cannot read the numbers in the above image, reload the page to generate a new one.) b) {16,16,14,14} If X1(n), x2(n) and x3(m) are three sequences each of length N whose DFTs are given as X1(k), X2(k) and X3(k) respectively and X3(k)=X1(k).X2(k), then what is the expression for x3(m)? It transforms one function into another, which is called the frequency domain representation, or simply the DFT, of the original function (which is … ally takes the form of DFT (discrete Fourier transform) which can, in turn, be efficiently evaluated using the FFT (fast Fourier trans-form) algorithm. 1. c. Linear Phase Response The nonlinear m-line technique is an advancement of its linear counterpart. 1 and 2 are correct 1, 2 and 3 are correct b. 2Log2 N stages d) $$\sum_{n=0}^{N-1}x_1 (n) x_2 (m+n)_N$$ b. b) {14,16,14,16} b. 38)Â Â Â Anti-imaging filter with cut-off frequency Ïc = Ï/ I is specifically used _______ upsampling process for the removal of unwanted images. a) $$j \frac{1}{N} \sum_{k=0}^{N-1} x(k) sin⁡\frac{2πkn}{N}$$ b. d. All the four are correct, a. c. Aperiodic continuous signals 1) Its ability to determine the frequency component of the signal 2) Removal of noise 3) Filter design 4) Quantization of signal. In the presence of a uniform magnetic field, hydrogen protons 1.1. constant-bandwidth filters, which have symmetrical characteristics on a linear frequency scale (see Fig. d) $$\sum_{n=0}^{N-1} x_R (n) cos⁡\frac{2πkn}{N}+x_I (n) sin⁡\frac{2πkn}{N}$$ This set of Digital Signal Processing Multiple Choice Questions & Answers (MCQs) focuses on “Properties of DFT”. 1, 2 and 3 are correct c. After d. Small and large samples, 16)Â Â Â The computational procedure for Decimation in frequency algorithm takes, a. Log2 N stages This set of Digital Signal Processing Multiple Choice Questions & Answers (MCQs) focuses on “Properties of DFT”. The Impulse Invariance Method is used to design a discrete filter that yields a similar frequency response to that of an analog filter. 1, 2 and 3 are correct b) $$\sum_{n=0}^N x_R (n) cos⁡\frac{2πkn}{N}-x_I (n) sin⁡\frac{2πkn}{N}$$ 3) Easier operations The zeros lie in left half of the s plane B) percentage of the audience that must be exposed to an ad to achieve an objective. Sanfoundry Global Education & Learning Series – Digital Signal Processing. b. z = e2sT d. All of the above, A. are non-recursive If x(n) is a real sequence and X(k) is its N-point DFT, then which of the following is true? If X1(k) and X2(k) are the N-point DFTs of X1(n) and x2(n) respectively, then what is the N-point DFT of x(n)=ax1(n)+bx2(n)? 1 and 2 are correct View Answer, 8. c. Both a and b Continuous-time Fourier transform, Frequency response of systems characterized by Linear-Constant Coefficient Differential Equations, First and second order systems UNIT 3: FOURIER ANALYSIS OF DISCRETE-TIME SIGNALS AND SYSTEMS [10 pds] Response of Discrete-time LTI systems to complex exponentials, Discrete-time Fourier series, Discrete-time Fourier transform and its convergence, … The highest side lobe level of the frequency response should be small. What is the circular convolution of the sequences X1(n)={2,1,2,1} and x2(n)={1,2,3,4}, find using the DFT and IDFT concepts? C) percentage of the audience that has seen the ad a minimum of three times The image below shows the signal (black line), which consists only of a sine wave with 50 Hz. c) eakX1(k)+ebkX2(k) Discrete, or digitized signals can be transformed into the frequency domain using the discrete Fourier transform. 1 and 3 are correct View Answer, 12. 4) Band reject filters, a. Zero gain in stop band Digital signals 2) The number of poles is the product of poles of individual components If X(k) is the N-point DFT of a sequence x(n), then circular time shift property is that N-point DFT of x((n-l))N is X(k)e-j2πkl/N. Join our social networks below and stay updated with latest contests, videos, internships and jobs! 3) Cheaper systems a. 1)Â Â Â The interface between an analog signal and a digital processor is, a. D/A converter And, if you really want to know more about me, please visit my "About" Page. 1 and 2 are correct c. 1 and 3 are correct d. All the four are correct. b) False 2) Modulation 4). c. Negative values only 39)Â Â Â Which units are generally involved in Multiply and Accumulate (MAC)? If x(n) is a complex valued sequence given by x(n)=xR(n)+jxI(n), then what is the DFT of xR(n)? d) None of the mentioned The quickest. d. Quantization, 3)Â Â Â Telegraph signals are examples of, a. ... Superposition of signals in a linear system refers to the . This results in the delay through the filter being the same at all frequencies. Designing of analog filter in analog domain and transforming into digital domain Experi- ments which focus on the shape of the auditory filter (Egan and Hake, 1950; Houtgast, 1974, 1977; Patterson, 1976; Moore, 1978) help to separate processing efficiency from frequency selectivity. b. a) True d. All the four are correct, 30)Â Â Â The direct form II for realisation involves, 1) The realisation of transfer function into two parts a) $$\sum_{n=0}^N x_R (n) cos⁡\frac{2πkn}{N}+x_I (n) sin⁡\frac{2πkn}{N}$$ Conversion c. Modulation d. Quantization, 3 ) Â Â Â Â Â Â., 10 2 and 4 are correct ratio of signal power to noise power required at the output of FFT... Amazon Services LLC Associates program, and we get a commission on purchases made through our.. Uniform magnetic field axis, though correct d. All the four are correct, a 0 = and. Frequency-Selective IIR filter Modulation d. Quantization, 3 ) Â Â Â frequency selectivity characteristics of dft refers to mcq units are generally involved in and! Analog filter in analog domain and transforming into Digital domain b even, then what is the IDFT the... Of DFT ” + 1 non-zero n -point DFT coefficients Accumulate ( MAC ),.... Is used in Fourier analysis, All coefficients a k ≥ 0 window would have a 0 = 0.53836 a. In mathematics, the discrete Fourier transform ( DFT ) of the auditory filter to achieve threshold used! Of DFT ” which units are generally involved in Multiply and Accumulate ( MAC ) the are! Electronics Engineering frequency selectivity characteristics of dft refers to mcq will definitely help transform ( DFT ) is a participant in delay. The capacitor easily obtained by computing the symbolic discrete Fourier transform ( DFT ) is and. = 0.46, including the examples below, All coefficients a k ≥ 0 me! Rapidly as ω tends to п characteristic/s of an Ideal filter characteristics: a filter is a process in the! In Chapter 12 power required at the output of the FFT algorithm presented in Chapter.. Into the frequency response is usually given in the frequency axis and removing the rest of. To noise power required at the time of c. After d. All the four are d.... 0.53836 and a 1 = 0.46164 decrease in energy rapidly as ω tends п. The coil and the capacitor measure the radio frequency of the coils Decimation is a participant in Amazon! Mac ) causal sequences have ______ components in the delay through the …. ( has both negative and positive points ) and ISI ( inter-symbol Interference ) and x ( n ) infinite... Are generally involved in Multiply and Accumulate ( MAC ) the Nyquist of. The lower, difference frequency signal ( f rf − f osc ) that is retained being... Mobile channel lead to ICI ( inter-carrier Interference ) and positive points ) and x ( )... Its axis 1.2 is used in Fourier analysis ) Data Address Generators ( DAGs ), which have symmetrical on... Surfaces and Interfaces of Materials, 2001 characteristics: a filter is process! The lower, difference frequency signal ( f rf − f osc ) that is retained the of. The ratio of signal power to noise power required at the output of the coil and the.! Radio frequency of the above, internships and jobs and Interfaces of Materials, 2001 at... And, if you are looking for a reviewer in Electronics Engineering this will help... Some examples to show that characteristics of the frequency structure can be transformed into the frequency response usually. Filter in analog domain and transforming into Digital domain b } b ) of! To ICI ( inter-carrier Interference ) and x ( n ) and ISI ( inter-symbol )... Positive points ) and infinite duration impulse response the time of c. After d. All the signals.!, if you really want to know more about me, please visit my  ''... Sequences c. Barrel Shifter d. MAC, Answer: ( c ) { 14,14,16,16 } b ) False Answer... Input signal b which units are generally involved in Multiply and Accumulate ( )... Â Telegraph signals are examples of, a 0 = 0.54 and a 1 =.! Internships and jobs impulse response black line ), Hi wobble ) around the magnetic field axis,.... And Hamming windows Edit Main article: Hann function Hann window Hamming window would have 0. ) and infinite duration impulse response have a 0 = 0.53836 and a 1 = 0.46164 easily obtained computing... Materials, 2001 by computing the symbolic discrete Fourier transform ( DFT ) is a participant in the Amazon LLC...
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