How is the process of non-uniform quantization equivalently & combinationally performed?

A. Passage of baseband signal through the compressor

B. Application of compressed signal to a uniform quantizer

C. Passage of passband signal through the compressor

D. Application of compressed signal to a non-uniform quantizer

a. A & B

b. C & D

c. A & D

d. C & B

ANSWER: A & B

Explanation:

Non-uniform quantizer has has non-linear characteristics while the step-size consistently keeps on varying & depends on the amplitude of input signal.

This process of non-uniform quantization resemble to the mechanisms of passing the baseband signal through compressor and then eventually applying the compressed signal to a uniform quantizer.