In PCM, the Quantization noise depends on:
| In PCM, the Quantization noise depends on:
A. Sampling rate
B. Number of quantization levels
C. Signal power
D. None of the above
Please scroll down to see the correct answer and solution guide.
Right Answer is: B
SOLUTION
In PCM (Pulse Code Modulation) system, the Quantization Noise is defined as:
\({Q_{noise}} = \frac{{{{\rm{\Delta }}^2}}}{{12}};\) where Δ is the step size of the Quantizer defined as:
\({\rm{\Delta }} = \frac{{2{A_m}}}{q};\) where 2Am is the peak to peak amplitude and
q is the number of quantization levels.
Thus, the quantization noise depends on the number of quantization levels.