Four voice signals. each limited to 4 kHz and sampled at Nyquist rate are converted into binary PCM signal using 256 quantization levels. The bit transmission rate for the time-division multiplexed signal will be
(a) 8 kbps
(b) 64 kbps
(c) 256 kbps
(d) 512 kbps
I got this question during an online exam.
Origin of the question is Digital Transmission in division EDC Overview of Electronic Devices & Circuits