Fortunately (?) for me, these so-called static sounds are typically in the high frequency range...something that I resolve by turning off or not wearing my disappointing (for a variety of reasons) hearing aids.
You know, those Old-Phart-Bling things?
UNfortunately it appears this background quirk becomes more evident if the general volume is reduced...which is too bad since (IMHO) most people have their on-board sound volume set way too high in proportion to the apparent scale distance that the source/engine is from the ear. That goes for O, HO, N, et al.