If this were true, you'd be able to come up with a reference to serious published papers on the subject. I found one on my first attempt (admittedly from back in 1959). All you could come up with was a page from the mouser web-site.
You presumably did enough to satisfy a customer, but none of it seems to have stuck.
Quantifying noise levels would be a pain. The nearest I've got to it has been comparing noisy traces on an oscilloscope - when you can get two traces with the same noise close enough to appear to be overlapping you've estimated the rms noise as half the separation.
In theory you bandlimit it, and multiply it by itself in a four quadrant multiplier, and low pass filter the product, but I've never seen anybody do it. At Cambridge Instruments there was a noise-limited resolution test carried out by the final test technicians who knew exactly what they were doing, but weren't all that willing to talk about it.
I once had to fudge a low pass filter to give them a signal they were happy with, and the discussion wasn't all that quantitative. I got home at about 10pm that night, and we shipped the first machine more or less on schedule.
I don't feel any need to insult you. All do I do is point out where you posts fall short. There's nothing childish about that.
Since the responses aren't composed to be insults, they probably don't satisfy the criteria for a "strong insult" whatever that might be.