This is something that my brother showed me, and you’ll want to use headphones while listening.
Basically, its an experiment at improving audio quality and also how we perceive audio in general. In very layman’s terms: a dummy human head has very sensitive microphones in the locations of the ears. Those microphones then record whatever and complicated computer work synchronizes those 2 audio streams into being just one, that still plays in the stereo affect (ie: both ears simultaneously). This lets you get a “virtual” haircut.
If you want to read the full nitty-gritty details, the Wiki article appears fairly comprehensive in a quick scan. There’s also one that’s more specific to these recordings. Both have links to further recordings.
