I've worked on similar problemsss starting with Microsoft's speech SDK back in the 90's. This is more of a pain the the ass than it first appears to be. I was secretly excited that maybe NSA has cracked a difficult nut here. (NDA be damned, I'd like to see this in the commercial market)
While the whole spying thing is disconcerting, I wonder how much cool tech they have that could be put to commercial use. wondert if theres a path for a government agency such as NSA to share tech breakthroughs with the public sector. Nasa does this to some degree...