| These are primarily notes|
It won't be complete in any sense.
It exists to contain fragments of useful information.
|This article/section is a stub — probably a pile of half-sorted notes, is not well-checked so may have incorrect bits. (Feel free to ignore, fix, or tell me)|
Oversampling, a.k.a. supersampling, refers to fetching more samples than you need.
This usually implies you are using and ADC to give fewer but stabler samples than that it actually runs at.
This is useful for a few different but related reasons.
Avoid aliasing, and/or easier input filtering
Imitate higher resolution, and lower noise