By accident I found the page of code.nasa.org today. A little icon showing a microphone cached my attention:
Since Chrome 11 there is a “support” for the Speech Input API. I’ve read about this but in fact I thought the integration would be more extensive. Surprisingly the implementation is very easy – with the attribute “x-webkit-speech” (later on it’s only “speech”). The whole thing should be able to work with Input and Textarea elements:
//Supported elements <input type="text" x-webkit-speech /> <textarea x-webkit-speech />
A bottle of bitterness
It only works on Chrome and you have to speak very slow and clear. He doesn’t understand German and only a few English. Hmm… not a Siri at all. The Speech Input API is still in his baby shoes and there aren’t that many improvements since the Release of Chrome 11.
Have a try
You are able to try it for example here. But this video shows how it works as well (for those who are not Chrome users 
)