a) Assuming the human voice has a spectrum of frequencies ranging from 200 Hz to 4000 Hz, what sampling rate should be used to retain all necessary information in the digital data?[1 mark]b) In general, the number of code levels used in telephone systems is 128. If the data rate is 1 Mb/s, how many PCM encoded voice calls can be sent from one location to another location simultaneously?[5 marks]
a) Assuming the human voice has a spectrum of frequencies ranging f…
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