A PCM system has 8 quantum levels at 1V, 1.5V, 2V, 2.5V, 3V, 3.5V, 4V, 4.5V. What is the largest quantization noise possible in the system?

Quantization Levels&Number of Bits

Time left 0:09:55Question 1Answer savedMarked out of 2.00Flag questionTipsQuestion textConsider the quantisation of a bandwidth-limited but randomly and continuously varying analogue signal. We wish to model the relationship between Signal to Quantisation noise power (in dB) and the number of bits m used by a linear quantiser (that is, the quantiser allows 2m possible levels). We are aware of the derived expression SNR = 6m - 7.3 dB, but we know that our signal does NOT have the ratio of standard definition to peak signal level assumed in that definition. Which of the following statements is true?Question 1Select one:We would expect the SNR to be linearly related to m, but both the slope and intercept of the linear equation would be different to that predicted by the above equationWe would expect the SNR to be linearly related to m, but while the intercept of the linear equation would be unchanged, the slope would be different to that predicted by the above equation We would expect the SNR to be linearly related to m, but the intercept of the linear equation would be different to that predicted by the above equationWe could not expect the above linear equation to describe the SNR vs m relationship at all; the relationship might no longer be linearClear my choiceQuestion 2Answer savedMarked out of 2.00Flag questionTipsQuestion textWhich of the following statements is/are true concerning carriage of streaming services over networks?Question 2Select one or more:Streaming services may be carried over circuit-switched, packet-switched or virtual circuit switched networksStreaming services can only be carried in packet form if the network provides virtual circuit switchingStreaming services require separate network infrastructure; they cannot be carried over the same network as bursty data servicesStreaming services generate bits continuously and so cannot be carried over packet switched networks

Quantization

Ex : For a PCM system with the following parameters, determine (a)minimum sample rate (b) minimum number of bits used in the PCM code (c)resolution (d) quantization errorMaximum analog input frequency = 4 kHzMaximum decode voltage at the receiver = ±2.55VMinimum dynamic range = 46 dB

A low-pass analogue signal has a bandwidth of 15 kHz and has a SNR of 43 dB due to thermal noise and interference from nearby electrical equipment. If uniform 10-bit quantisation is used when sampling and digitising the signal, which of the following would you expect to be the output digital bit rate?Question 9Select one:75 kbit/s150 kbit/s100 kbit/s30 kbit/s330 kbit/s