Q. The bit rate for a signal, which has a sampling rate of $8\ kHz$ and where 16 quantisation levels have been used is
A) 32000 $bits/s$
B) 16000 $bits/s$
C) 64000 $bits/s$
D) 72000 $bits/s$
Explanation
(a) If $n$ is the number of bits per sample, then number of quantisation levels $= 2^{n}$
Since the number of quantisation levels is 16
$\Rightarrow 2^{n} = 16 \Rightarrow n = 4$
$\therefore$ bit rate = sampling rate $\times$ no. of bits per sample
$= 8000 \times 4 = 32,000\ bits/s$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.