Speech synthesis events

Hi Everyone,

I played around with the speech synthesis API implementation in Chrome last night, it’s pretty great stuff. The lack of SSML support is troubling and I hope that gets resolved soon, and it seems like getVoices() is handled differently in every browser I’ve tested, but it’s getting there.

I wanted to put in a request for a new event called “onphoneme” and/or “onword”. It would be excellent to have this feature for lip-syncing as hacking “onboundary” can only get you so far. The data structure I imagine that would be passed for these events could be modeled from phonemenon (https://github.com/jimkang/phonemenon <https://github.com/jimkang/phonemenon>) which gives the phoneme or array of phonemes and their stress level. I know we’re still in the early days of this API, but I feel like having an “onboundary” event and not having an event for when words themselves are spoken is counterintuitive.

- Aaron