Fair enough. I'm a musician so that's the first thing that came to mind when I heard "smart earplugs" (Etymotic have a wide range of products beyond the GSP).

Fair enough. I'm a musician so that's the first thing that came to mind when I heard "smart earplugs" (Etymotic have a wide range of products beyond the GSP). I do have to work in a noisy office environment sometimes, and so these could be great for that. Right now I have a giant pair of construction-site style over-the-ear cans that I combine with various noise generators.