If you spend a lot of time on YouTube, you may have seen something called 8D Audio showing up in the Up Next column or in your recommended videos. 8D? As in eight-dimensional audio? Yes, it’s a thing.

Dolby Atmos is a spatial audio found in movie theaters, home audio products such as soundbars and receivers -- and even in some headphones. You can even find it in some high-end cars, too. On the ...