Communication Systems - Engineering

Q1:

In a channel voice coder, the outputs of sixteen 20 Hz low pass filters are sampled, multiplexed and A/D converted. If sampling is at 40 samples/second and 3 bits/sample represents each voltage sample, the bit rate is about

A 1.9 k bits/sec

B 0.95 k bits/sec

C 3.8 k bits/sec

D 7.6 k bits/sec

ANS:A - 1.9 k bits/sec

Here, Number of outputs sampled * bits/samples * samples/second.