A speech signal with a bandwidth of 4 kHz is sampled, quantized, and transmitted using a PCM system. It is desired that the data sample at the receiving end must be known within ±5% of the peak-to-peak full-sacle value of the amplitude ±A. Determine the number of samples must each digital word contain. Estimate the bandwidth of the PCM signal assuming the pulse is
by assuming k = 1 and 2 in (10.17.11b).