I watched a few tutorials and they seemed to cover the use.
But I can't guess what the issue you are trying to solve here. I might guess the question is how to remove noise but that one is a deep hole or tar pit. Even I can't give a direct answer without possibly upsetting someone.
But I can offer other titles. It will include what you noted and I can't find a list that omits those so without further ado, a link.