We want to digitise an analogue signal with bandwidth 6 kHz and will be using a quantiser that allows one of 256 possible levels. Approximately what bit rate (in kbit/s) do you think we should expect after sampling and quantisation? (Give the number of kbit/s ONLY - do not show your calculation and do not include units.)

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

Quantization Levels&Number of Bits

A typical sampling rate is 44.1 kHz and there are typically 16 bits in each sample. How many bits per second are processed? Express your answer in scientific notation.

What is the percentage increase in the number of bits processed as a result of increasing the sampling rate from 44 kHz to 128 kHz? Express your answer to the nearest percent.

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