No, but I think it's a great idea. If you end up using JuliusJS for this, please let me know. I still need to make some example applications to showcase what JuliusJS can do - I'll have them listed in the README when they're done.
I also came across PocketSphinx, which has been around a little longer - that may have some users in the wild already, and I wouldn't be surprised if it was used for navigation somewhere.
Sounds good, thanks! Also, I think you'd get more interest here if there were a simple demo page that people could click through to -- that's the nice thing about JS, after all. Maybe something hosted on a github.io page that just transcribes into a textarea?
