So after playing around with the page, I just started saying random things to see how the speech API would fare with my atrocious accent. That was interesting, until I said "the quick fox", and it interpreted ... bleeped speech?
2015-06-20 03:02:49.109 say_restyle.js:7 Speech recognized: the quick f****
2015-06-20 03:02:49.110 say_restyle.js:7 Speech recognized: the quick Fox
2015-06-20 03:02:49.110 say_restyle.js:7 Speech recognized: quick f****
What the fox?