Question on PCM Sampling and Quantization order
That link provides a very superficial Q &amp; A on signals and systems.
It's not clear which kind of a sampler or quantizer they are referring to.
However, if sampling and quantization are defined as ideal mathematical operators then,
you should get exactly the same result by altering their orders. Hence the sample values should be same (meaning that the same noise also).
May be they're referring to some unstated practical ADC schemes (that I cannot recall) which do not perform ideal operations and might create different results.