Multiple choice

A symmetric three-level midtread quantizer is to be designed assuming equiprobable occurrence of all quantization levels.

The quantization noise power for the quantization region between -a and +a in the figure is

  1. $\dfrac{4}{81}$
  2. $\dfrac{1}{9}$
  3. $\dfrac{5}{81}$
  4. $\dfrac{2}{81}$
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A Correct answer
Explanation