A signal with a Vrms = 2.7V is being quantised with a midtread quantiser with a dynamic range of -4V to 4V. It has a maximum quantisation error of 1mV. Calculate the SQNR.

A data acquisition system monitors a rapidly changing voltage signal. The system has a 16-bit analog-to-digital converter and operates at a sampling rate of 200 samples per second. What is the minimum time required to capture a full cycle of the highest frequency component in the signal? What is the bit rate in bits per second(bps)?

A congested link of rate R=120 Mbps is shared by nine ongoing client-server applications, each using one TCP connection. A new application starts. If it opens 11 parallel TCP connections while the other nine applications each keep using one connection, what transmission rate does the new application get approximately?

An audio signal with maximum amplitude 1 V (i.e. it may have values in the range -1 V to +1 V) is quantised using 8-bit nonlinear quantisation and uses all 255 available levels (so any of the 255 possible 8-bit output words might be generated). Suppose we halve the signal amplitude, making no change to the quantiser. Which of the following statements most accurately tells us the number N of 8-bit words that might be output now?

An audio signal with maximum amplitude 1 V (i.e. it may have values in the range -1 V to +1 V) is quantised using 8-bit linear quantisation and uses all 255 available levels (so any of the 255 possible 8-bit output words might be generated). Suppose we halve the signal amplitude, making no change to the quantiser. Which of the following statements most accurately tells us the number N of 8-bit words that might be output now?

In Section 6(b) of the laboratory exercise, you measured the SNR when the sample speech clip 12secSpeechSample - Speeches That Changed The World - Intro.wav  (sampled at 44.1 kHz) was quantised for different values of "m". What was the SNR for m=3? (Give your answer in dB accurate to 1 decimal place, but do not write the units - just put the number.)

In part 5(f) of the laboratory exercise, you measured the SNR when a sine wave test signal (sampled at 8 kHz) was quantised for different values of "m". What was the SNR for m=2? (Give your answer in dB accurate to 1 decimal place, but do not write the units - just put the number.)

In Section 6(b) of the laboratory exercise, you measured the SNR when the sample music clip ShortClip_Shine On.wav  (sampled at 44.1 kHz) was quantised for different values of "m". What was the SNR for m=4? (Give your answer in dB accurate to 1 decimal place, but do not write the units - just put the number.)