Question: A voice signal with a bandwidth of 4 kHz and an amplitude range of ±20 mV is converted to digital data using a PCM system.
(a) Determine the maximum sampling interval Ts that can be used to sample the voice signal.
(b) If the PCM system has an accuracy of ±5% during the quantization step, determine the length of the codewords in bits.
(c) Determine the data rate in bps (bits/s) of the resulting PCM sequence.