D. None of the mentioned. The use of non uniform quantization leads to a) Reduction in transmission bandwidth b) Increase in maximum SNR c) Increase in SNR for low level signals d) Simplification of quantization process Answer: c Explanation: The use of non uniform quantization leads to increase in SNR for low level signals. 35+ MCQs on Microprocessor and Microcontroller. Directly proportional. In uniform quantization process : A. the step size remains same: B. step size varies according to the values of the input signal: C. the quantizer has linear characteristics Increase; Decrease; Can't say; . Digital Communications Random Signals. None of the above Answer. (d) For the sample collected at t = 0.3s, what is the associated quantization error? C. The quantizer has linear characteristics. MCQs: Uniform quantization provides better quantization for - (A) Weak signals - (B) Strong signals. B. When μ=0, then there is no compression and the quantization becomes uniform. The figures below illustrate these two operations for the case ofB = 2. Question 4. Step size varies according to the values of the input signal B. The reconstructed coefficients are then clipped to the range [-2048, + 2047] and inverse zigzag scanned to put them in an 8 × 8 block. Given that input to the PCM system is a sinusoidal signal. MCQ Multiple Choice Questions and Answers on Augmented Reality - Virtual Reality. Step size varies according to the values of the input signal c. The quantizer has linear characteristics d. Both a and c are correct ANSWER: (d) Both a and c are correct 2) The process of converting the analog sample into discrete form is called a. Modulation b. Multiplexing What is quantization. 1) In uniform quantization process. Compression . 35+ Important MCQ on Transistor. PCM permits the use of pulse regeneration. . The Xmax is the maximum value of the signal and Xmin is the minimum value of the signal. A magnitude of the sampled image is expressed as a digital value in image processing. 1) In uniform quantization process a. The least BW. 35)The use of non uniform quantization leads to a)Reduction in transmission bandwidth b)Increase in maximum SNR c)Increase in SNR for low level signals d)Simplification of quantization process Answer:c Explanation:The use of non uniform quantization leads to increase in SNR for low level signals. View Answer. Abdul Kalam Technical University,Lucknow YouTube: youtube/c/UniversityAcademy. They are uniform quantization and non-uniform quantization. . μ-Law. Which is a quantization process?RoundingTruncationRounding & TruncationNone of the mentioned ; Rounding; Non uniform quantization provides better quantization for. None of the above. In uniform quantization process a) The step size remains same b) Step size varies according to the values of the input signal c) The quantizer has linear characteristics d) Both a) and c) are correct View Answer / Hide Answer Q2. DSP:Quantization Basics QuantizationBasics Given a real number x, we denote the quantized value of x as xˆ = Q(x) = x +ǫ where ǫ is the "quantization error". These problems have been arranged is such a manner that beginners are comfortable while they are starting it as a new topic. by sheela_s_83746. We have listed below the best Digital Image Processing MCQ Questions, that check your basic knowledge of Digital Image Processing. The output SNR can be made independent of input signal level by using. There are two main types of quantization: 1. D. Double. Digital Communications Sampling And Quantization 1. A. Inversely proportional. Step size varies according to the values of the input signal c. The quantizer has linear characteristics d. Both a and c are correct ANSWER: (d) Both a and c are correct. A whole pulse code modulation technique consists of encoding, quantization and sampling process. Multiple choice questions on Digital Communication topic Signal Formatting and Baseband Modulation. When you are quantizing an image, you are actually dividing a signal into quanta (partitions). Played 0 times. ©Yao Wang, 2006 EE3414:Quantization 6 Uniform Quantization • Applicable when the signal is in a finite range (f min, f max) • The entire data range is divided into L equal intervals of length Q (known as quantization interval or quantization step-size) Q =(f max-f min)/L •Interval i is mapped to the middle value of this interval It is a process in which a series of analog signals are converted into digital binary signals. Companding. 5. UNIT-4 MCQ Questions with Solutions AKTU 1. C. Equal. Uniform & non-uniform quantization . (U.P.S.C.I.E.S. 102 Q: Which of the following requires a synchronizing signal? Take Digital Image Processing Quiz To test your Knowledge. • The quantization of x to xˆ can be done through 1. rounding, or 2. truncation. The signal to quantization noise ratio is given as. Directly proportional. In which system quantization noise is produced: (A) All modulation systems (B) All pulse modulation systems (C) PCM (D) None of the above. The L is the number of levels that divide the signal. At the receiver, an inverse compression characteristic, called "expansion" is employed to avoid signal distortion. The step size remains the same C. The quantizer has linear characteristics D. None of these E. Both B and C are correct Answer - Click Here: 2. This process is very useful in communication systems. If the signal to quantization noise ratio is 31.8 dB, the number of levels in the quantizer is ________. Multiple Choice Questions and Answers on Digital Communication Multiple Choice Questions and Answers By Sasmita November 28, 2016 1) In uniform quantization process 25 times. Q: 15 hours ago. A. Deterministic. The entire process of measuring and quantizing The number of quantization value is equal to: q=2 v. Let the normalized signal power is equal to P then the signal to quantization noise will be given by: Advantages of PCM. use an R.F. Transfer of protons. The step size remains same b. Compression + Expansion = Companding. For perceptual audio coding, quantization involves representing the outputs of the filterbank by a finite number of levels with the aim of minimizing the subjective impairments of quantization noise. A. Inversely proportional. Rounding: choose closest value As an example, suppose we want to quantize √1 2 B. Vector quantization improves the performance only for sources with memory. (C) Image Enhancement. Quantisation Process MCQ Question 3: A sinusoidal signal of amplitude A is quantized by a uniform quantizer. For iid sources, the best scalar quantizer has the same efficiency as the best vector quantizer. The step size remains same. Question 1. In uniform quantization process a. the step size remains same B. step size varies according to the values of the input signal c. the quantizer has linear characteristics d. both a and c are correct Discussion d.both a and c are correct 2. Signal to Quantization Noise ratio in PCM . 2 12 1 2 2 1 2 /2 2 1 ( 1) max 2 2 = ∆ ∆ − = ∑∫ − = ∆ − ∆ M i i i q dx X i σ x increase the number of samples per second. increase the number of standard amplitudes. 1. 49. 1) In uniform quantization process a. . 1) In uniform quantization process a. answer choices advertisement PauseUnmute Fullscreen VDO.AI To remove this problem, non-uniform quantization is utilized in which the step size differs with the amplitude of the i/p. Which of the following is correct in uniform quantization process ______ A. Weak signals: b. 10. Name of Two popular measures of distortion are: A. squared error measure and absolute difference measure B. Fidelity and Quality C. Scalar and Vector Quantization D. mean squared error (mse) and Signal to Noise Ratio (SNR) Correct option is A 2. The output SNR can be made independent of input signal level by using. answer choices The characteristics of a quantizer can be specified by means of the step size and the range, as shown in Figure 4.7.While a uniform quantizer has the same step size throughout the input range, a . 250+ TOP MCQs on Uniform and Non Uniform Quantization & Answers Digital Communication Questions & Answers for freshers on "Uniform and Non Uniform Quantization". The process of converting the analog sample into discrete form is called a) Modulation b) Multiplexing c) Quantization d) Sampling Q3. Digital Communication MCQs 1. Uniform quantization provides better quantization for: a. MCQ on Sampling and Quantization DRAFT. The process of converting the analog sample into discrete form is called. A. . When B→∞, xˆ becomes the real number x. Assume that the signal utilizes all the representation levels of the quantizer. 3. What is the third step in digital image processing? Digital Communications Question Bank. Multiple Choice Questions On DATA COMPRESSION By Mr. Sandeep Vishwakarma Assistant Professor Dr. A.P. Image Restrotion. There are two types of quantization depending on the step size. Quantization is opposite to sampling. The expression of μ law is. Increase. The process of Companding: In a linear or uniform quantization, the small amplitude signals would have a poor SNR than the large-amplitude signals. The step size remains same. Companding is the process of: a. Inverse 4 quantization is the process of reconstructing an approximation of the original coefficient by multiplying the quantized coefficient by the same step size (refer to Equations (2.9) and (2.11) ). Step size varies according to the values of the input signal c. The quantizer has linear characteristics d. Both a and c are correct ANSWER: (d) Both a and c are correct 2) The process of converting the analog sample into discrete form is called a. Modulation b. Multiplexing The compression of the signal at the transmitter and expansion at the receiver is combined to be called . Q. amplifier in the receiver. This Digital Image Processing MCQ Test contains 25+ Multiple Choice Questions. Unit 1. rounding Strong signals: c. . An individual who initiates, creates and manages a new business can be called _____. Digital Communications Quantization. The process of converting the analog sample into discrete form is called a) Modulation b) Multiplexing 50. Uniform Quantization of Uniform Source If the source is uniformly distributed in [-X max, X max], the output is quantized by an M-level uniform quantizer, then the quantization step size is and the distortion is, 2 max M X ∆ =. 22. 21. Digital Communications Questions Quiz. The output of a Lloyd quantizer is a discrete signal with a uniform pmf; Both (A) and (B) . 2) The process of converting the analog sample into discrete form is called a. Modulation b. 2) The process of converting the analog sample into discrete form is called a. Modulation b. Correct option is B. The step size remains same b. What is Uniform . Step size C. Quantile size D. Level width Answer: B Unit 1. (c) What are the boundary values for the quantization intervals? D. Both a and c are correct. 1. 15 hours ago. Derive an expressin for signal to quantization noise ratio for a PCM system which emplys linear (i.e., uniform) quantization technique. B. For iid sources, the best scalar quantizer has the same efficiency as the best vector quantizer. Answer: Pulse-code modulation. 1. The step size remains same. The step size remains same b. 21. The size of the quantile interval is called as A. Inter level B. a) Continuous, discrete b) Discrete, continuous c) Discrete, discrete With Ts=0.1s, consider a 3-bit uniform quantisation process, answer the following questions: (a) what will be the quantization interval Δ? (b) What is the maximum quantization error? by sheela_s_83746. answer choices . 0. . Ans: A. 250+ TOP MCQs on Quantization Techniques and Answers Wireless & Mobile Communications Multiple Choice Questions on "Quantization Techniques". B. Vector quantization improves the performance only for sources with memory. These Sampling and Quantization MCQ Questions Will help you to improve your Digital Communication knowledge and will prepare you for various Examinations like Competitive Exams, Placements, Interviews and other Entrance Exmaniations. EXAMPLE 4.1. Question: 2. Rounding and truncation are typical examples of quantization processes. 0. . (A) Increase (B) Decrease (C) Can't say (D) None of the above Answer Correct option is B Question 3. Effect of noise is reduced. In Pulse Code Modulation, the amplitude level is transmitted in a 7-units channel code. Answer: B. Clarification: Signal to noise ratio is worse for weak level signals.so it provides better quantization for high level signals. Companding refers to the process of first compressing an analog signal at the source, and then expanding this signal back to its original size when it reaches its destination. send pulses whose sides are more nearly vertical. Transfer of electrons. B. C. Equal. Data compression means to the file size. Quantization. Generally the use of non-uniform quantizing leads to: (A) Simplification of quantization process (B) Increase in SNR for low level signals (C) Increase in maximum SNR (D) Reduction in transmission .
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