Discussion
What is quantisation noise?
Answer: B
Quantisation noise is the rounding error between the true sample value and the discrete level chosen to represent it, and unlike channel noise it is created inside the coder and travels with the signal. Thermal noise, aliasing and timing jitter are separate and independent impairments. Quantisation noise is the price of the digital step, and it is the one impairment that regeneration cannot remove.
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