Essentially, this lets you have your own background music. Hold down the volume up button, and the mics on the side of The Headphone will pick up whatever is happening around you, then filter that sound back through the earbuds, alongside whatever song or podcast you’re listening to. You hear both.
It’s something you really have to try to understand, and Bragi isn’t alone in creating this, but man, it is something. Say you’re at the cash register in a convenience store, or you’re on the subway while the conductor makes an announcement, or you want to get in the zone at work without totally ignoring your coworkers. This lets you address the world without having to remove or pause anything.
As these “hearables” get smarter, the end goal is to make it so you never have to remove your headphones. Is that dystopian? Probably. Can tech like this be useful? Yeah.
Bragi’s implementation is simplistic — higher pitches often sound a bit processed, and lower pitches can get drowned out. But once you use it, you can see why people are so big on the whole in-ear computer idea.