Question

In the equation SQNR = 10 \(log_{10}⁡\frac{P_x}{P_n}\). what are the terms Px and Pn are called ___ respectively.

(a) Power of the Quantization noise and Signal power

(b) Signal power and power of the quantization noise

(c) None of the mentioned

(d) All of the mentioned

I have been asked this question during a job interview.

My question comes from Analysis of Quantization Errors topic in division Discrete Time Systems Implementation of Digital Signal Processing

Answer 1

The correct answer is (b) Signal power and power of the quantization noise

For explanation I would say: In the equation SQNR = \(10 log_{10}⁡\frac{P_x}{P_n}\) then the terms Px is the signal power and Pn is the power of the quantization noise